Radionuclide Reportable Quantities

49 CFR §172.101 Appendix A, Table 2 — 758 isotopes. The main Hazardous Materials Table lists Class 7 UN entries by package type (e.g. UN2915 Type A); the RQ for the isotope inside the package is looked up here.

RQ per §171.15 discharge-notification threshold. Values are the same in curies and terabecquerels — Ci is the traditional column, TBq (parenthetical in the eCFR source) is the SI equivalent.

Radionuclide	Element	Atomic #	RQ (Ci)	RQ (TBq)
Actinium-224	Actinium	89	100	3.7
Actinium-225	Actinium	89	1	0.037
Actinium-226	Actinium	89	10	0.37
Actinium-227	Actinium	89	0.001	0.000037
Actinium-228	Actinium	89	10	0.37
Aluminum-26	Aluminum	13	10	0.37
Americium-237	Americium	95	1000	37
Americium-238	Americium	95	100	3.7
Americium-239	Americium	95	100	3.7
Americium-240	Americium	95	10	0.37
Americium-241	Americium	95	0.01	0.00037
Americium-242	Americium	95	100	3.7
Americium-242m	Americium	95	0.01	0.00037
Americium-243	Americium	95	0.01	0.00037
Americium-244	Americium	95	10	0.37
Americium-244m	Americium	95	1000	37
Americium-245	Americium	95	1000	37
Americium-246	Americium	95	1000	37
Americium-246m	Americium	95	1000	37
Antimony-115	Antimony	51	1000	37
Antimony-116	Antimony	51	1000	37
Antimony-116m	Antimony	51	100	3.7
Antimony-117	Antimony	51	1000	37
Antimony-118m	Antimony	51	10	0.37
Antimony-119	Antimony	51	1000	37
Antimony-120 (16 min)	Antimony	51	1000	37
Antimony-120 (5.76 day)	Antimony	51	10	0.37
Antimony-122	Antimony	51	10	0.37
Antimony-124	Antimony	51	10	0.37
Antimony-124m	Antimony	51	1000	37
Antimony-125	Antimony	51	10	0.37
Antimony-126	Antimony	51	10	0.37
Antimony-126m	Antimony	51	1000	37
Antimony-127	Antimony	51	10	0.37
Antimony-128 (10.4 min)	Antimony	51	1000	37
Antimony-128 (9.01 hr)	Antimony	51	10	0.37
Antimony-129	Antimony	51	100	3.7
Antimony-130	Antimony	51	100	3.7
Antimony-131	Antimony	51	1000	37
Argon-39	Argon	18	1000	37
Argon-41	Argon	18	10	0.37
Arsenic-69	Arsenic	33	1000	37
Arsenic-70	Arsenic	33	100	3.7
Arsenic-71	Arsenic	33	100	3.7
Arsenic-72	Arsenic	33	10	0.37
Arsenic-73	Arsenic	33	100	3.7
Arsenic-74	Arsenic	33	10	0.37
Arsenic-76	Arsenic	33	100	3.7
Arsenic-77	Arsenic	33	1000	37
Arsenic-78	Arsenic	33	100	3.7
Astatine-207	Astatine	85	100	3.7
Astatine-211	Astatine	85	100	3.7
Barium-126	Barium	56	1000	37
Barium-128	Barium	56	10	0.37
Barium-131	Barium	56	10	0.37
Barium-131m	Barium	56	1000	37
Barium-133	Barium	56	10	0.37
Barium-133m	Barium	56	100	3.7
Barium-135m	Barium	56	1000	37
Barium-139	Barium	56	1000	37
Barium-140	Barium	56	10	0.37
Barium-141	Barium	56	1000	37
Barium-142	Barium	56	1000	37
Berkelium-245	Berkelium	97	100	3.7
Berkelium-246	Berkelium	97	10	0.37
Berkelium-247	Berkelium	97	0.01	0.00037
Berkelium-249	Berkelium	97	1	0.037
Berkelium-250	Berkelium	97	100	3.7
Beryllium-10	Beryllium	4	1	0.037
Beryllium-7	Beryllium	4	100	3.7
Bismuth-200	Bismuth	83	100	3.7
Bismuth-201	Bismuth	83	100	3.7
Bismuth-202	Bismuth	83	1000	37
Bismuth-203	Bismuth	83	10	0.37
Bismuth-205	Bismuth	83	10	0.37
Bismuth-206	Bismuth	83	10	0.37
Bismuth-207	Bismuth	83	10	0.37
Bismuth-210	Bismuth	83	10	0.37
Bismuth-210m	Bismuth	83	0.1	0.0037
Bismuth-212	Bismuth	83	100	3.7
Bismuth-213	Bismuth	83	100	3.7
Bismuth-214	Bismuth	83	100	3.7
Bromine-74	Bromine	35	100	3.7
Bromine-74m	Bromine	35	100	3.7
Bromine-75	Bromine	35	100	3.7
Bromine-76	Bromine	35	10	0.37
Bromine-77	Bromine	35	100	3.7
Bromine-80	Bromine	35	1000	37
Bromine-80m	Bromine	35	1000	37
Bromine-82	Bromine	35	10	0.37
Bromine-83	Bromine	35	1000	37
Bromine-84	Bromine	35	100	3.7
Cadmium-104	Cadmium	48	1000	37
Cadmium-107	Cadmium	48	1000	37
Cadmium-109	Cadmium	48	1	0.037
Cadmium-113	Cadmium	48	0.1	0.0037
Cadmium-113m	Cadmium	48	0.1	0.0037
Cadmium-115	Cadmium	48	100	3.7
Cadmium-115m	Cadmium	48	10	0.37
Cadmium-117	Cadmium	48	100	3.7
Cadmium-117m	Cadmium	48	10	0.37
Calcium-41	Calcium	20	10	0.37
Calcium-45	Calcium	20	10	0.37
Calcium-47	Calcium	20	10	0.37
Californium-244	Californium	98	1000	37
Californium-246	Californium	98	10	0.37
Californium-248	Californium	98	0.1	0.0037
Californium-249	Californium	98	0.01	0.00037
Californium-250	Californium	98	0.01	0.00037
Californium-251	Californium	98	0.01	0.00037
Californium-252	Californium	98	0.1	0.0037
Californium-253	Californium	98	10	0.37
Californium-254	Californium	98	0.1	0.0037
Carbon-11	Carbon	6	1000	37
Carbon-14	Carbon	6	10	0.37
Cerium-134	Cerium	58	10	0.37
Cerium-135	Cerium	58	10	0.37
Cerium-137	Cerium	58	1000	37
Cerium-137m	Cerium	58	100	3.7
Cerium-139	Cerium	58	100	3.7
Cerium-141	Cerium	58	10	0.37
Cerium-143	Cerium	58	100	3.7
Cerium-144	Cerium	58	1	0.037
Cesium-125	Cesium	55	1000	37
Cesium-127	Cesium	55	100	3.7
Cesium-129	Cesium	55	100	3.7
Cesium-130	Cesium	55	1000	37
Cesium-131	Cesium	55	1000	37
Cesium-132	Cesium	55	10	0.37
Cesium-134	Cesium	55	1	0.037
Cesium-134m	Cesium	55	1000	37
Cesium-135	Cesium	55	10	0.37
Cesium-135m	Cesium	55	100	3.7
Cesium-136	Cesium	55	10	0.37
Cesium-137	Cesium	55	1	0.037
Cesium-138	Cesium	55	100	3.7
Chlorine-36	Chlorine	17	10	0.37
Chlorine-38	Chlorine	17	100	3.7
Chlorine-39	Chlorine	17	100	3.7
Chromium-48	Chromium	24	100	3.7
Chromium-49	Chromium	24	1000	37
Chromium-51	Chromium	24	1000	37
Cobalt-55	Cobalt	27	10	0.37
Cobalt-56	Cobalt	27	10	0.37
Cobalt-57	Cobalt	27	100	3.7
Cobalt-58	Cobalt	27	10	0.37
Cobalt-58m	Cobalt	27	1000	37
Cobalt-60	Cobalt	27	10	0.37
Cobalt-60m	Cobalt	27	1000	37
Cobalt-61	Cobalt	27	1000	37
Cobalt-62m	Cobalt	27	1000	37
Copper-60	Copper	29	100	3.7
Copper-61	Copper	29	100	3.7
Copper-64	Copper	29	1000	37
Copper-67	Copper	29	100	3.7
Curium-238	Curium	96	1000	37
Curium-240	Curium	96	1	0.037
Curium-241	Curium	96	10	0.37
Curium-242	Curium	96	1	0.037
Curium-243	Curium	96	0.01	0.00037
Curium-244	Curium	96	0.01	0.00037
Curium-245	Curium	96	0.01	0.00037
Curium-246	Curium	96	0.01	0.00037
Curium-247	Curium	96	0.01	0.00037
Curium-248	Curium	96	0.001	0.000037
Curium-249	Curium	96	1000	37
Dysprosium-155	Dysprosium	66	100	3.7
Dysprosium-157	Dysprosium	66	100	3.7
Dysprosium-159	Dysprosium	66	100	3.7
Dysprosium-165	Dysprosium	66	1000	37
Dysprosium-166	Dysprosium	66	10	0.37
Einsteinium-250	Einsteinium	99	10	0.37
Einsteinium-251	Einsteinium	99	1000	37
Einsteinium-253	Einsteinium	99	10	0.37
Einsteinium-254	Einsteinium	99	0.1	0.0037
Einsteinium-254m	Einsteinium	99	1	0.037
Erbium-161	Erbium	68	100	3.7
Erbium-165	Erbium	68	1000	37
Erbium-169	Erbium	68	100	3.7
Erbium-171	Erbium	68	100	3.7
Erbium-172	Erbium	68	10	0.37
Europium-145	Europium	63	10	0.37
Europium-146	Europium	63	10	0.37
Europium-147	Europium	63	10	0.37
Europium-148	Europium	63	10	0.37
Europium-149	Europium	63	100	3.7
Europium-150 (12.6 hr)	Europium	63	1000	37
Europium-150 (34.2 yr)	Europium	63	10	0.37
Europium-152	Europium	63	10	0.37
Europium-152m	Europium	63	100	3.7
Europium-154	Europium	63	10	0.37
Europium-155	Europium	63	10	0.37
Europium-156	Europium	63	10	0.37
Europium-157	Europium	63	10	0.37
Europium-158	Europium	63	1000	37
Fermium-252	Fermium	100	10	0.37
Fermium-253	Fermium	100	10	0.37
Fermium-254	Fermium	100	100	3.7
Fermium-255	Fermium	100	100	3.7
Fermium-257	Fermium	100	1	0.037
Fluorine-18	Fluorine	9	1000	37
Francium-222	Francium	87	100	3.7
Francium-223	Francium	87	100	3.7
Gadolinium-145	Gadolinium	64	100	3.7
Gadolinium-146	Gadolinium	64	10	0.37
Gadolinium-147	Gadolinium	64	10	0.37
Gadolinium-148	Gadolinium	64	0.001	0.000037
Gadolinium-149	Gadolinium	64	100	3.7
Gadolinium-151	Gadolinium	64	100	3.7
Gadolinium-152	Gadolinium	64	0.001	0.000037
Gadolinium-153	Gadolinium	64	10	0.37
Gadolinium-159	Gadolinium	64	1000	37
Gallium-65	Gallium	31	1000	37
Gallium-66	Gallium	31	10	0.37
Gallium-67	Gallium	31	100	3.7
Gallium-68	Gallium	31	1000	37
Gallium-70	Gallium	31	1000	37
Gallium-72	Gallium	31	10	0.37
Gallium-73	Gallium	31	100	3.7
Germanium-66	Germanium	32	100	3.7
Germanium-67	Germanium	32	1000	37
Germanium-68	Germanium	32	10	0.37
Germanium-69	Germanium	32	10	0.37
Germanium-71	Germanium	32	1000	37
Germanium-75	Germanium	32	1000	37
Germanium-77	Germanium	32	10	0.37
Germanium-78	Germanium	32	1000	37
Gold-193	Gold	79	100	3.7
Gold-194	Gold	79	10	0.37
Gold-195	Gold	79	100	3.7
Gold-198	Gold	79	100	3.7
Gold-198m	Gold	79	10	0.37
Gold-199	Gold	79	100	3.7
Gold-200	Gold	79	1000	37
Gold-200m	Gold	79	10	0.37
Gold-201	Gold	79	1000	37
Hafnium-170	Hafnium	72	100	3.7
Hafnium-172	Hafnium	72	1	0.037
Hafnium-173	Hafnium	72	100	3.7
Hafnium-175	Hafnium	72	100	3.7
Hafnium-177m	Hafnium	72	1000	37
Hafnium-178m	Hafnium	72	0.1	0.0037
Hafnium-179m	Hafnium	72	100	3.7
Hafnium-180m	Hafnium	72	100	3.7
Hafnium-181	Hafnium	72	10	0.37
Hafnium-182	Hafnium	72	0.1	0.0037
Hafnium-182m	Hafnium	72	100	3.7
Hafnium-183	Hafnium	72	100	3.7
Hafnium-184	Hafnium	72	100	3.7
Holmium-155	Holmium	67	1000	37
Holmium-157	Holmium	67	1000	37
Holmium-159	Holmium	67	1000	37
Holmium-161	Holmium	67	1000	37
Holmium-162	Holmium	67	1000	37
Holmium-162m	Holmium	67	1000	37
Holmium-164	Holmium	67	1000	37
Holmium-164m	Holmium	67	1000	37
Holmium-166	Holmium	67	100	3.7
Holmium-166m	Holmium	67	1	0.037
Holmium-167	Holmium	67	100	3.7
Hydrogen-3	Hydrogen	1	100	3.7
Indium-109	Indium	49	100	3.7
Indium-110 (4.9 hr)	Indium	49	10	0.37
Indium-110 (69.1 min)	Indium	49	100	3.7
Indium-111	Indium	49	100	3.7
Indium-112	Indium	49	1000	37
Indium-113m	Indium	49	1000	37
Indium-114m	Indium	49	10	0.37
Indium-115	Indium	49	0.1	0.0037
Indium-115m	Indium	49	100	3.7
Indium-116m	Indium	49	100	3.7
Indium-117	Indium	49	1000	37
Indium-117m	Indium	49	100	3.7
Indium-119m	Indium	49	1000	37
Iodine-120	Iodine	53	10	0.37
Iodine-120m	Iodine	53	100	3.7
Iodine-121	Iodine	53	100	3.7
Iodine-123	Iodine	53	10	0.37
Iodine-124	Iodine	53	0.1	0.0037
Iodine-125	Iodine	53	0.01	0.00037
Iodine-126	Iodine	53	0.01	0.00037
Iodine-128	Iodine	53	1000	37
Iodine-129	Iodine	53	0.001	0.000037
Iodine-130	Iodine	53	1	0.037
Iodine-131	Iodine	53	0.01	0.00037
Iodine-132	Iodine	53	10	0.37
Iodine-132m	Iodine	53	10	0.37
Iodine-133	Iodine	53	0.1	0.0037
Iodine-134	Iodine	53	100	3.7
Iodine-135	Iodine	53	10	0.37
Iridium-182	Iridium	77	1000	37
Iridium-184	Iridium	77	100	3.7
Iridium-185	Iridium	77	100	3.7
Iridium-186	Iridium	77	10	0.37
Iridium-187	Iridium	77	100	3.7
Iridium-188	Iridium	77	10	0.37
Iridium-189	Iridium	77	100	3.7
Iridium-190	Iridium	77	10	0.37
Iridium-190m	Iridium	77	1000	37
Iridium-192	Iridium	77	10	0.37
Iridium-192m	Iridium	77	100	3.7
Iridium-194	Iridium	77	100	3.7
Iridium-194m	Iridium	77	10	0.37
Iridium-195	Iridium	77	1000	37
Iridium-195m	Iridium	77	100	3.7
Iron-52	Iron	26	100	3.7
Iron-55	Iron	26	100	3.7
Iron-59	Iron	26	10	0.37
Iron-60	Iron	26	0.1	0.0037
Krypton-74	Krypton	36	10	0.37
Krypton-76	Krypton	36	10	0.37
Krypton-77	Krypton	36	10	0.37
Krypton-79	Krypton	36	100	3.7
Krypton-81	Krypton	36	1000	37
Krypton-83m	Krypton	36	1000	37
Krypton-85	Krypton	36	1000	37
Krypton-85m	Krypton	36	100	3.7
Krypton-87	Krypton	36	10	0.37
Krypton-88	Krypton	36	10	0.37
Lanthanum-131	Lanthanum	57	1000	37
Lanthanum-132	Lanthanum	57	100	3.7
Lanthanum-135	Lanthanum	57	1000	37
Lanthanum-137	Lanthanum	57	10	0.37
Lanthanum-138	Lanthanum	57	1	0.037
Lanthanum-140	Lanthanum	57	10	0.37
Lanthanum-141	Lanthanum	57	1000	37
Lanthanum-142	Lanthanum	57	100	3.7
Lanthanum-143	Lanthanum	57	1000	37
Lead-195m	Lead	82	1000	37
Lead-198	Lead	82	100	3.7
Lead-199	Lead	82	100	3.7
Lead-200	Lead	82	100	3.7
Lead-201	Lead	82	100	3.7
Lead-202	Lead	82	1	0.037
Lead-202m	Lead	82	10	0.37
Lead-203	Lead	82	100	3.7
Lead-205	Lead	82	100	3.7
Lead-209	Lead	82	1000	37
Lead-210	Lead	82	0.01	0.00037
Lead-211	Lead	82	100	3.7
Lead-212	Lead	82	10	0.37
Lead-214	Lead	82	100	3.7
Lutetium-169	Lutetium	71	10	0.37
Lutetium-170	Lutetium	71	10	0.37
Lutetium-171	Lutetium	71	10	0.37
Lutetium-172	Lutetium	71	10	0.37
Lutetium-173	Lutetium	71	100	3.7
Lutetium-174	Lutetium	71	10	0.37
Lutetium-174m	Lutetium	71	10	0.37
Lutetium-176	Lutetium	71	1	0.037
Lutetium-176m	Lutetium	71	1000	37
Lutetium-177	Lutetium	71	100	3.7
Lutetium-177m	Lutetium	71	10	0.37
Lutetium-178	Lutetium	71	1000	37
Lutetium-178m	Lutetium	71	1000	37
Lutetium-179	Lutetium	71	1000	37
Magnesium-28	Magnesium	12	10	0.37
Manganese-51	Manganese	25	1000	37
Manganese-52	Manganese	25	10	0.37
Manganese-52m	Manganese	25	1000	37
Manganese-53	Manganese	25	1000	37
Manganese-54	Manganese	25	10	0.37
Manganese-56	Manganese	25	100	3.7
Mendelevium-257	Mendelevium	101	100	3.7
Mendelevium-258	Mendelevium	101	1	0.037
Mercury-193	Mercury	80	100	3.7
Mercury-193m	Mercury	80	10	0.37
Mercury-194	Mercury	80	0.1	0.0037
Mercury-195	Mercury	80	100	3.7
Mercury-195m	Mercury	80	100	3.7
Mercury-197	Mercury	80	1000	37
Mercury-197m	Mercury	80	1000	37
Mercury-199m	Mercury	80	1000	37
Mercury-203	Mercury	80	10	0.37
Molybdenum-101	Molybdenum	42	1000	37
Molybdenum-90	Molybdenum	42	100	3.7
Molybdenum-93	Molybdenum	42	100	3.7
Molybdenum-93m	Molybdenum	42	10	0.37
Molybdenum-99	Molybdenum	42	100	3.7
Neodymium-136	Neodymium	60	1000	37
Neodymium-138	Neodymium	60	1000	37
Neodymium-139	Neodymium	60	1000	37
Neodymium-139m	Neodymium	60	100	3.7
Neodymium-141	Neodymium	60	1000	37
Neodymium-147	Neodymium	60	10	0.37
Neodymium-149	Neodymium	60	100	3.7
Neodymium-151	Neodymium	60	1000	37
Neptunium-232	Neptunium	93	1000	37
Neptunium-233	Neptunium	93	1000	37
Neptunium-234	Neptunium	93	10	0.37
Neptunium-235	Neptunium	93	1000	37
Neptunium-236 (1.2 E 5 yr)	Neptunium	93	0.1	0.0037
Neptunium-236 (22.5 hr)	Neptunium	93	100	3.7
Neptunium-237	Neptunium	93	0.01	0.00037
Neptunium-238	Neptunium	93	10	0.37
Neptunium-239	Neptunium	93	100	3.7
Neptunium-240	Neptunium	93	100	3.7
Nickel-56	Nickel	28	10	0.37
Nickel-57	Nickel	28	10	0.37
Nickel-59	Nickel	28	100	3.7
Nickel-63	Nickel	28	100	3.7
Nickel-65	Nickel	28	100	3.7
Nickel-66	Nickel	28	10	0.37
Niobium-88	Niobium	41	100	3.7
Niobium-89 (122 min)	Niobium	41	100	3.7
Niobium-89 (66 min)	Niobium	41	100	3.7
Niobium-90	Niobium	41	10	0.37
Niobium-93m	Niobium	41	100	3.7
Niobium-94	Niobium	41	10	0.37
Niobium-95	Niobium	41	10	0.37
Niobium-95m	Niobium	41	100	3.7
Niobium-96	Niobium	41	10	0.37
Niobium-97	Niobium	41	100	3.7
Niobium-98	Niobium	41	1000	37
Osmium-180	Osmium	76	1000	37
Osmium-181	Osmium	76	100	3.7
Osmium-182	Osmium	76	100	3.7
Osmium-185	Osmium	76	10	0.37
Osmium-189m	Osmium	76	1000	37
Osmium-191	Osmium	76	100	3.7
Osmium-191m	Osmium	76	1000	37
Osmium-193	Osmium	76	100	3.7
Osmium-194	Osmium	76	1	0.037
Palladium-100	Palladium	46	100	3.7
Palladium-101	Palladium	46	100	3.7
Palladium-103	Palladium	46	100	3.7
Palladium-107	Palladium	46	100	3.7
Palladium-109	Palladium	46	1000	37
Phosphorus-32	Phosphorus	15	0.1	0.0037
Phosphorus-33	Phosphorus	15	1	0.037
Platinum-186	Platinum	78	100	3.7
Platinum-188	Platinum	78	100	3.7
Platinum-189	Platinum	78	100	3.7
Platinum-191	Platinum	78	100	3.7
Platinum-193	Platinum	78	1000	37
Platinum-193m	Platinum	78	100	3.7
Platinum-195m	Platinum	78	100	3.7
Platinum-197	Platinum	78	1000	37
Platinum-197m	Platinum	78	1000	37
Platinum-199	Platinum	78	1000	37
Platinum-200	Platinum	78	100	3.7
Plutonium-234	Plutonium	94	1000	37
Plutonium-235	Plutonium	94	1000	37
Plutonium-236	Plutonium	94	0.1	0.0037
Plutonium-237	Plutonium	94	1000	37
Plutonium-238	Plutonium	94	0.01	0.00037
Plutonium-239	Plutonium	94	0.01	0.00037
Plutonium-240	Plutonium	94	0.01	0.00037
Plutonium-241	Plutonium	94	1	0.037
Plutonium-242	Plutonium	94	0.01	0.00037
Plutonium-243	Plutonium	94	1000	37
Plutonium-244	Plutonium	94	0.01	0.00037
Plutonium-245	Plutonium	94	100	3.7
Polonium-203	Polonium	84	100	3.7
Polonium-205	Polonium	84	100	3.7
Polonium-207	Polonium	84	10	0.37
Polonium-210	Polonium	84	0.01	0.00037
Potassium-40	Potassium	19	1	0.037
Potassium-42	Potassium	19	100	3.7
Potassium-43	Potassium	19	10	0.37
Potassium-44	Potassium	19	100	3.7
Potassium-45	Potassium	19	1000	37
Praseodymium-136	Praseodymium	59	1000	37
Praseodymium-137	Praseodymium	59	1000	37
Praseodymium-138m	Praseodymium	59	100	3.7
Praseodymium-139	Praseodymium	59	1000	37
Praseodymium-142	Praseodymium	59	100	3.7
Praseodymium-142m	Praseodymium	59	1000	37
Praseodymium-143	Praseodymium	59	10	0.37
Praseodymium-144	Praseodymium	59	1000	37
Praseodymium-145	Praseodymium	59	1000	37
Praseodymium-147	Praseodymium	59	1000	37
Promethium-141	Promethium	61	1000	37
Promethium-143	Promethium	61	100	3.7
Promethium-144	Promethium	61	10	0.37
Promethium-145	Promethium	61	100	3.7
Promethium-146	Promethium	61	10	0.37
Promethium-147	Promethium	61	10	0.37
Promethium-148	Promethium	61	10	0.37
Promethium-148m	Promethium	61	10	0.37
Promethium-149	Promethium	61	100	3.7
Promethium-150	Promethium	61	100	3.7
Promethium-151	Promethium	61	100	3.7
Protactinium-227	Protactinium	91	100	3.7
Protactinium-228	Protactinium	91	10	0.37
Protactinium-230	Protactinium	91	10	0.37
Protactinium-231	Protactinium	91	0.01	0.00037
Protactinium-232	Protactinium	91	10	0.37
Protactinium-233	Protactinium	91	100	3.7
Protactinium-234	Protactinium	91	10	0.37
RADIONUCLIDES $†	RADIONUCLIDES $†	0	1	0.037
Radium-223	Radium	88	1	0.037
Radium-224	Radium	88	10	0.37
Radium-225	Radium	88	1	0.037
Radium-226 **	Radium	88	0.1	0.0037
Radium-227	Radium	88	1000	37
Radium-228	Radium	88	0.1	0.0037
Radon-220	Radon	86	0.1	0.0037
Radon-222	Radon	86	0.1	0.0037
Rhenium-177	Rhenium	75	1000	37
Rhenium-178	Rhenium	75	1000	37
Rhenium-181	Rhenium	75	100	3.7
Rhenium-182 (12.7 hr)	Rhenium	75	10	0.37
Rhenium-182 (64.0 hr)	Rhenium	75	10	0.37
Rhenium-184	Rhenium	75	10	0.37
Rhenium-184m	Rhenium	75	10	0.37
Rhenium-186	Rhenium	75	100	3.7
Rhenium-186m	Rhenium	75	10	0.37
Rhenium-187	Rhenium	75	1000	37
Rhenium-188	Rhenium	75	1000	37
Rhenium-188m	Rhenium	75	1000	37
Rhenium-189	Rhenium	75	1000	37
Rhodium-100	Rhodium	45	10	0.37
Rhodium-101	Rhodium	45	10	0.37
Rhodium-101m	Rhodium	45	100	3.7
Rhodium-102	Rhodium	45	10	0.37
Rhodium-102m	Rhodium	45	10	0.37
Rhodium-103m	Rhodium	45	1000	37
Rhodium-105	Rhodium	45	100	3.7
Rhodium-106m	Rhodium	45	10	0.37
Rhodium-107	Rhodium	45	1000	37
Rhodium-99	Rhodium	45	10	0.37
Rhodium-99m	Rhodium	45	100	3.7
Rubidium-79	Rubidium	37	1000	37
Rubidium-81	Rubidium	37	100	3.7
Rubidium-81m	Rubidium	37	1000	37
Rubidium-82m	Rubidium	37	10	0.37
Rubidium-83	Rubidium	37	10	0.37
Rubidium-84	Rubidium	37	10	0.37
Rubidium-86	Rubidium	37	10	0.37
Rubidium-87	Rubidium	37	10	0.37
Rubidium-88	Rubidium	37	1000	37
Rubidium-89	Rubidium	37	1000	37
Ruthenium-103	Ruthenium	44	10	0.37
Ruthenium-105	Ruthenium	44	100	3.7
Ruthenium-106	Ruthenium	44	1	0.037
Ruthenium-94	Ruthenium	44	1000	37
Ruthenium-97	Ruthenium	44	100	3.7
Samarium-141	Samarium	62	1000	37
Samarium-141m	Samarium	62	1000	37
Samarium-142	Samarium	62	1000	37
Samarium-145	Samarium	62	100	3.7
Samarium-146	Samarium	62	0.01	0.00037
Samarium-147	Samarium	62	0.01	0.00037
Samarium-151	Samarium	62	10	0.37
Samarium-153	Samarium	62	100	3.7
Samarium-155	Samarium	62	1000	37
Samarium-156	Samarium	62	100	3.7
Scandium-43	Scandium	21	1000	37
Scandium-44	Scandium	21	100	3.7
Scandium-44m	Scandium	21	10	0.37
Scandium-46	Scandium	21	10	0.37
Scandium-47	Scandium	21	100	3.7
Scandium-48	Scandium	21	10	0.37
Scandium-49	Scandium	21	1000	37
Selenium-70	Selenium	34	1000	37
Selenium-73	Selenium	34	10	0.37
Selenium-73m	Selenium	34	100	3.7
Selenium-75	Selenium	34	10	0.37
Selenium-79	Selenium	34	10	0.37
Selenium-81	Selenium	34	1000	37
Selenium-81m	Selenium	34	1000	37
Selenium-83	Selenium	34	1000	37
Silicon-31	Silicon	14	1000	37
Silicon-32	Silicon	14	1	0.037
Silver-102	Silver	47	100	3.7
Silver-103	Silver	47	1000	37
Silver-104	Silver	47	1000	37
Silver-104m	Silver	47	1000	37
Silver-105	Silver	47	10	0.37
Silver-106	Silver	47	1000	37
Silver-106m	Silver	47	10	0.37
Silver-108m	Silver	47	10	0.37
Silver-110m	Silver	47	10	0.37
Silver-111	Silver	47	10	0.37
Silver-112	Silver	47	100	3.7
Silver-115	Silver	47	1000	37
Sodium-22	Sodium	11	10	0.37
Sodium-24	Sodium	11	10	0.37
Strontium-80	Strontium	38	100	3.7
Strontium-81	Strontium	38	1000	37
Strontium-83	Strontium	38	100	3.7
Strontium-85	Strontium	38	10	0.37
Strontium-85m	Strontium	38	1000	37
Strontium-87m	Strontium	38	100	3.7
Strontium-89	Strontium	38	10	0.37
Strontium-90	Strontium	38	0.1	0.0037
Strontium-91	Strontium	38	10	0.37
Strontium-92	Strontium	38	100	3.7
Sulfur-35	Sulfur	16	1	0.037
Tantalum-172	Tantalum	73	100	3.7
Tantalum-173	Tantalum	73	100	3.7
Tantalum-174	Tantalum	73	100	3.7
Tantalum-175	Tantalum	73	100	3.7
Tantalum-176	Tantalum	73	10	0.37
Tantalum-177	Tantalum	73	1000	37
Tantalum-178	Tantalum	73	1000	37
Tantalum-179	Tantalum	73	1000	37
Tantalum-180	Tantalum	73	100	3.7
Tantalum-180m	Tantalum	73	1000	37
Tantalum-182	Tantalum	73	10	0.37
Tantalum-182m	Tantalum	73	1000	37
Tantalum-183	Tantalum	73	100	3.7
Tantalum-184	Tantalum	73	10	0.37
Tantalum-185	Tantalum	73	1000	37
Tantalum-186	Tantalum	73	1000	37
Technetium-101	Technetium	43	1000	37
Technetium-104	Technetium	43	1000	37
Technetium-93	Technetium	43	100	3.7
Technetium-93m	Technetium	43	1000	37
Technetium-94	Technetium	43	10	0.37
Technetium-94m	Technetium	43	100	3.7
Technetium-96	Technetium	43	10	0.37
Technetium-96m	Technetium	43	1000	37
Technetium-97	Technetium	43	100	3.7
Technetium-97m	Technetium	43	100	3.7
Technetium-98	Technetium	43	10	0.37
Technetium-99	Technetium	43	10	0.37
Technetium-99m	Technetium	43	100	3.7
Tellurium-116	Tellurium	52	1000	37
Tellurium-121	Tellurium	52	10	0.37
Tellurium-121m	Tellurium	52	10	0.37
Tellurium-123	Tellurium	52	10	0.37
Tellurium-123m	Tellurium	52	10	0.37
Tellurium-125m	Tellurium	52	10	0.37
Tellurium-127	Tellurium	52	1000	37
Tellurium-127m	Tellurium	52	10	0.37
Tellurium-129	Tellurium	52	1000	37
Tellurium-129m	Tellurium	52	10	0.37
Tellurium-131	Tellurium	52	1000	37
Tellurium-131m	Tellurium	52	10	0.37
Tellurium-132	Tellurium	52	10	0.37
Tellurium-133	Tellurium	52	1000	37
Tellurium-133m	Tellurium	52	1000	37
Tellurium-134	Tellurium	52	1000	37
Terbium-147	Terbium	65	100	3.7
Terbium-149	Terbium	65	100	3.7
Terbium-150	Terbium	65	100	3.7
Terbium-151	Terbium	65	10	0.37
Terbium-153	Terbium	65	100	3.7
Terbium-154	Terbium	65	10	0.37
Terbium-155	Terbium	65	100	3.7
Terbium-156	Terbium	65	10	0.37
Terbium-156m (24.4 hr)	Terbium	65	1000	37
Terbium-156m (5.0 hr)	Terbium	65	1000	37
Terbium-157	Terbium	65	100	3.7
Terbium-158	Terbium	65	10	0.37
Terbium-160	Terbium	65	10	0.37
Terbium-161	Terbium	65	100	3.7
Thallium-194	Thallium	81	1000	37
Thallium-194m	Thallium	81	100	3.7
Thallium-195	Thallium	81	100	3.7
Thallium-197	Thallium	81	100	3.7
Thallium-198	Thallium	81	10	0.37
Thallium-198m	Thallium	81	100	3.7
Thallium-199	Thallium	81	100	3.7
Thallium-200	Thallium	81	10	0.37
Thallium-201	Thallium	81	1000	37
Thallium-202	Thallium	81	10	0.37
Thallium-204	Thallium	81	10	0.37
Thorium-226	Thorium	90	100	3.7
Thorium-227	Thorium	90	1	0.037
Thorium-228	Thorium	90	0.01	0.00037
Thorium-229	Thorium	90	0.001	0.000037
Thorium-230	Thorium	90	0.01	0.00037
Thorium-231	Thorium	90	100	3.7
Thorium-232 **	Thorium	90	0.001	0.000037
Thorium-234	Thorium	90	100	3.7
Thulium-162	Thulium	69	1000	37
Thulium-166	Thulium	69	10	0.37
Thulium-167	Thulium	69	100	3.7
Thulium-170	Thulium	69	10	0.37
Thulium-171	Thulium	69	100	3.7
Thulium-172	Thulium	69	100	3.7
Thulium-173	Thulium	69	100	3.7
Thulium-175	Thulium	69	1000	37
Tin-110	Tin	50	100	3.7
Tin-111	Tin	50	1000	37
Tin-113	Tin	50	10	0.37
Tin-117m	Tin	50	100	3.7
Tin-119m	Tin	50	10	0.37
Tin-121	Tin	50	1000	37
Tin-121m	Tin	50	10	0.37
Tin-123	Tin	50	10	0.37
Tin-123m	Tin	50	1000	37
Tin-125	Tin	50	10	0.37
Tin-126	Tin	50	1	0.037
Tin-127	Tin	50	100	3.7
Tin-128	Tin	50	1000	37
Titanium-44	Titanium	22	1	0.037
Titanium-45	Titanium	22	1000	37
Tungsten-176	Tungsten	74	1000	37
Tungsten-177	Tungsten	74	100	3.7
Tungsten-178	Tungsten	74	100	3.7
Tungsten-179	Tungsten	74	1000	37
Tungsten-181	Tungsten	74	100	3.7
Tungsten-185	Tungsten	74	10	0.37
Tungsten-187	Tungsten	74	100	3.7
Tungsten-188	Tungsten	74	10	0.37
Uranium-230	Uranium	92	1	0.037
Uranium-231	Uranium	92	1000	37
Uranium-232	Uranium	92	0.01	0.00037
Uranium-233	Uranium	92	0.1	0.0037
Uranium-234 **	Uranium	92	0.1	0.0037
Uranium-235 **	Uranium	92	0.1	0.0037
Uranium-236	Uranium	92	0.1	0.0037
Uranium-237	Uranium	92	100	3.7
Uranium-238 **	Uranium	92	0.1	0.0037
Uranium-239	Uranium	92	1000	37
Uranium-240	Uranium	92	1000	37
Vanadium-47	Vanadium	23	1000	37
Vanadium-48	Vanadium	23	10	0.37
Vanadium-49	Vanadium	23	1000	37
Xenon-120	Xenon	54	100	3.7
Xenon-121	Xenon	54	10	0.37
Xenon-122	Xenon	54	100	3.7
Xenon-123	Xenon	54	10	0.37
Xenon-125	Xenon	54	100	3.7
Xenon-127	Xenon	54	100	3.7
Xenon-129m	Xenon	54	1000	37
Xenon-131m	Xenon	54	1000	37
Xenon-133	Xenon	54	1000	37
Xenon-133m	Xenon	54	1000	37
Xenon-135	Xenon	54	100	3.7
Xenon-135m	Xenon	54	10	0.37
Xenon-138	Xenon	54	10	0.37
Ytterbium-162	Ytterbium	70	1000	37
Ytterbium-166	Ytterbium	70	10	0.37
Ytterbium-167	Ytterbium	70	1000	37
Ytterbium-169	Ytterbium	70	10	0.37
Ytterbium-175	Ytterbium	70	100	3.7
Ytterbium-177	Ytterbium	70	1000	37
Ytterbium-178	Ytterbium	70	1000	37
Yttrium-86	Yttrium	39	10	0.37
Yttrium-86m	Yttrium	39	1000	37
Yttrium-87	Yttrium	39	10	0.37
Yttrium-88	Yttrium	39	10	0.37
Yttrium-90	Yttrium	39	10	0.37
Yttrium-90m	Yttrium	39	100	3.7
Yttrium-91	Yttrium	39	10	0.37
Yttrium-91m	Yttrium	39	1000	37
Yttrium-92	Yttrium	39	100	3.7
Yttrium-93	Yttrium	39	100	3.7
Yttrium-94	Yttrium	39	1000	37
Yttrium-95	Yttrium	39	1000	37
Zinc-62	Zinc	30	100	3.7
Zinc-63	Zinc	30	1000	37
Zinc-65	Zinc	30	10	0.37
Zinc-69	Zinc	30	1000	37
Zinc-69m	Zinc	30	100	3.7
Zinc-71m	Zinc	30	100	3.7
Zinc-72	Zinc	30	100	3.7
Zirconium-86	Zirconium	40	100	3.7
Zirconium-88	Zirconium	40	10	0.37
Zirconium-89	Zirconium	40	100	3.7
Zirconium-93	Zirconium	40	1	0.037
Zirconium-95	Zirconium	40	10	0.37
Zirconium-97	Zirconium	40	10	0.37

Showing 758 of 758 isotopes.

RQ per §171.15 discharge-notification threshold. Values are the same in curies and terabecquerels — Ci is the traditional column, TBq (parenthetical in the eCFR source) is the SI equivalent.

Radionuclide

Element

Atomic #

RQ (Ci)

RQ (TBq)

Actinium-224

Actinium

100

3.7

Actinium-225

Actinium

0.037

Actinium-226

Actinium

0.37

Actinium-227

Actinium

0.001

0.000037

Actinium-228

Actinium

0.37

Aluminum-26

Aluminum

0.37

Americium-237

Americium

1000

Americium-238

Americium

100

3.7

Americium-239

Americium

100

3.7

Americium-240

Americium

0.37

Americium-241

Americium

0.01

0.00037

Americium-242

Americium

100

3.7

Americium-242m

Americium

0.01

0.00037

Americium-243

Americium

0.01

0.00037

Americium-244

Americium

0.37

Americium-244m

Americium

1000

Americium-245

Americium

1000

Americium-246

Americium

1000

Americium-246m

Americium

1000

Antimony-115

Antimony

1000

Antimony-116

Antimony

1000

Antimony-116m

Antimony

100

3.7

Antimony-117

Antimony

1000

Antimony-118m

Antimony

0.37

Antimony-119

Antimony

1000

Antimony-120 (16 min)

Antimony

1000

Antimony-120 (5.76 day)

Antimony

0.37

Antimony-122

Antimony

0.37

Antimony-124

Antimony

0.37

Antimony-124m

Antimony

1000

Antimony-125

Antimony

0.37

Antimony-126

Antimony

0.37

Antimony-126m

Antimony

1000

Antimony-127

Antimony

0.37

Antimony-128 (10.4 min)

Antimony

1000

Antimony-128 (9.01 hr)

Antimony

0.37

Antimony-129

Antimony

100

3.7

Antimony-130

Antimony

100

3.7

Antimony-131

Antimony

1000

Argon-39

Argon

1000

Argon-41

Argon

0.37

Arsenic-69

Arsenic

1000

Arsenic-70

Arsenic

100

3.7

Arsenic-71

Arsenic

100

3.7

Arsenic-72

Arsenic

0.37

Arsenic-73

Arsenic

100

3.7

Arsenic-74

Arsenic

0.37

Arsenic-76

Arsenic

100

3.7

Arsenic-77

Arsenic

1000

Arsenic-78

Arsenic

100

3.7

Astatine-207

Astatine

100

3.7

Astatine-211

Astatine

100

3.7

Barium-126

Barium

1000

Barium-128

Barium

0.37

Barium-131

Barium

0.37

Barium-131m

Barium

1000

Barium-133

Barium

0.37

Barium-133m

Barium

100

3.7

Barium-135m

Barium

1000

Barium-139

Barium

1000

Barium-140

Barium

0.37

Barium-141

Barium

1000

Barium-142

Barium

1000

Berkelium-245

Berkelium

100

3.7

Berkelium-246

Berkelium

0.37

Berkelium-247

Berkelium

0.01

0.00037

Berkelium-249

Berkelium

0.037

Berkelium-250

Berkelium

100

3.7

Beryllium-10

Beryllium

0.037

Beryllium-7

Beryllium

100

3.7

Bismuth-200

Bismuth

100

3.7

Bismuth-201

Bismuth

100

3.7

Bismuth-202

Bismuth

1000

Bismuth-203

Bismuth

0.37

Bismuth-205

Bismuth

0.37

Bismuth-206

Bismuth

0.37

Bismuth-207

Bismuth

0.37

Bismuth-210

Bismuth

0.37

Bismuth-210m

Bismuth

0.1

0.0037

Bismuth-212

Bismuth

100

3.7

Bismuth-213

Bismuth

100

3.7

Bismuth-214

Bismuth

100

3.7

Bromine-74

Bromine

100

3.7

Bromine-74m

Bromine

100

3.7

Bromine-75

Bromine

100

3.7

Bromine-76

Bromine

0.37

Bromine-77

Bromine

100

3.7

Bromine-80

Bromine

1000

Bromine-80m

Bromine

1000

Bromine-82

Bromine

0.37

Bromine-83

Bromine

1000

Bromine-84

Bromine

100

3.7

Cadmium-104

Cadmium

1000

Cadmium-107

Cadmium

1000

Cadmium-109

Cadmium

0.037

Cadmium-113

Cadmium

0.1

0.0037

Cadmium-113m

Cadmium

0.1

0.0037

Cadmium-115

Cadmium

100

3.7

Cadmium-115m

Cadmium

0.37

Cadmium-117

Cadmium

100

3.7

Cadmium-117m

Cadmium

0.37

Calcium-41

Calcium

0.37

Calcium-45

Calcium

0.37

Calcium-47

Calcium

0.37

Californium-244

Californium

1000

Californium-246

Californium

0.37

Californium-248

Californium

0.1

0.0037

Californium-249

Californium

0.01

0.00037

Californium-250

Californium

0.01

0.00037

Californium-251

Californium

0.01

0.00037

Californium-252

Californium

0.1

0.0037

Californium-253

Californium

0.37

Californium-254

Californium

0.1

0.0037

Carbon-11

Carbon

1000

Carbon-14

Carbon

0.37

Cerium-134

Cerium

0.37

Cerium-135

Cerium

0.37

Cerium-137

Cerium

1000

Cerium-137m

Cerium

100

3.7

Cerium-139

Cerium

100

3.7

Cerium-141

Cerium

0.37

Cerium-143

Cerium

100

3.7

Cerium-144

Cerium

0.037

Cesium-125

Cesium

1000

Cesium-127

Cesium

100

3.7

Cesium-129

Cesium

100

3.7

Cesium-130

Cesium

1000

Cesium-131

Cesium

1000

Cesium-132

Cesium

0.37

Cesium-134

Cesium

0.037

Cesium-134m

Cesium

1000

Cesium-135

Cesium

0.37

Cesium-135m

Cesium

100

3.7

Cesium-136

Cesium

0.37

Cesium-137

Cesium

0.037

Cesium-138

Cesium

100

3.7

Chlorine-36

Chlorine

0.37

Chlorine-38

Chlorine

100

3.7

Chlorine-39

Chlorine

100

3.7

Chromium-48

Chromium

100

3.7

Chromium-49

Chromium

1000

Chromium-51

Chromium

1000

Cobalt-55

Cobalt

0.37

Cobalt-56

Cobalt

0.37

Cobalt-57

Cobalt

100

3.7

Cobalt-58

Cobalt

0.37

Cobalt-58m

Cobalt

1000

Cobalt-60

Cobalt

0.37

Cobalt-60m

Cobalt

1000

Cobalt-61

Cobalt

1000

Cobalt-62m

Cobalt

1000

Copper-60

Copper

100

3.7

Copper-61

Copper

100

3.7

Copper-64

Copper

1000

Copper-67

Copper

100

3.7

Curium-238

Curium

1000

Curium-240

Curium

0.037

Curium-241

Curium

0.37

Curium-242

Curium

0.037

Curium-243

Curium

0.01

0.00037

Curium-244

Curium

0.01

0.00037

Curium-245

Curium

0.01

0.00037

Curium-246

Curium

0.01

0.00037

Curium-247

Curium

0.01

0.00037

Curium-248

Curium

0.001

0.000037

Curium-249

Curium

1000

Dysprosium-155

Dysprosium

100

3.7

Dysprosium-157

Dysprosium

100

3.7

Dysprosium-159

Dysprosium

100

3.7

Dysprosium-165

Dysprosium

1000

Dysprosium-166

Dysprosium

0.37

Einsteinium-250

Einsteinium

0.37

Einsteinium-251

Einsteinium

1000

Einsteinium-253

Einsteinium

0.37

Einsteinium-254

Einsteinium

0.1

0.0037

Einsteinium-254m

Einsteinium

0.037

Erbium-161

Erbium

100

3.7

Erbium-165

Erbium

1000

Erbium-169

Erbium

100

3.7

Erbium-171

Erbium

100

3.7

Erbium-172

Erbium

0.37

Europium-145

Europium

0.37

Europium-146

Europium

0.37

Europium-147

Europium

0.37

Europium-148

Europium

0.37

Europium-149

Europium

100

3.7

Europium-150 (12.6 hr)

Europium

1000

Europium-150 (34.2 yr)

Europium

0.37

Europium-152

Europium

0.37

Europium-152m

Europium

100

3.7

Europium-154

Europium

0.37

Europium-155

Europium

0.37

Europium-156

Europium

0.37

Europium-157

Europium

0.37

Europium-158

Europium

1000

Fermium-252

Fermium

100

0.37

Fermium-253

Fermium

100

0.37

Fermium-254

Fermium

100

3.7

Fermium-255

Fermium

100

3.7

Fermium-257

Fermium

100

0.037

Fluorine-18

Fluorine

1000

Francium-222

Francium

100

3.7

Francium-223

Francium

100

3.7

Gadolinium-145

Gadolinium

100

3.7

Gadolinium-146

Gadolinium

0.37

Gadolinium-147

Gadolinium

0.37

Gadolinium-148

Gadolinium

0.001

0.000037

Gadolinium-149

Gadolinium

100

3.7

Gadolinium-151

Gadolinium

100

3.7

Gadolinium-152

Gadolinium

0.001

0.000037

Gadolinium-153

Gadolinium

0.37

Gadolinium-159

Gadolinium

1000

Gallium-65

Gallium

1000

Gallium-66

Gallium

0.37

Gallium-67

Gallium

100

3.7

Gallium-68

Gallium

1000

Gallium-70

Gallium

1000

Gallium-72

Gallium

0.37

Gallium-73

Gallium

100

3.7

Germanium-66

Germanium

100

3.7

Germanium-67

Germanium

1000

Germanium-68

Germanium

0.37

Germanium-69

Germanium

0.37

Germanium-71

Germanium

1000

Germanium-75

Germanium

1000

Germanium-77

Germanium

0.37

Germanium-78

Germanium

1000

Gold-193

Gold

100

3.7

Gold-194

Gold

0.37

Gold-195

Gold

100

3.7

Gold-198

Gold

100

3.7

Gold-198m

Gold

0.37

Gold-199

Gold

100

3.7

Gold-200

Gold

1000

Gold-200m

Gold

0.37

Gold-201

Gold

1000

Hafnium-170

Hafnium

100

3.7

Hafnium-172

Hafnium

0.037

Hafnium-173

Hafnium

100

3.7

Hafnium-175

Hafnium

100

3.7

Hafnium-177m

Hafnium

1000

Hafnium-178m

Hafnium

0.1

0.0037

Hafnium-179m

Hafnium

100

3.7

Hafnium-180m

Hafnium

100

3.7

Hafnium-181

Hafnium

0.37

Hafnium-182

Hafnium

0.1

0.0037

Hafnium-182m

Hafnium

100

3.7

Hafnium-183

Hafnium

100

3.7

Hafnium-184

Hafnium

100

3.7

Holmium-155

Holmium

1000

Holmium-157

Holmium

1000

Holmium-159

Holmium

1000

Holmium-161

Holmium

1000

Holmium-162

Holmium

1000

Holmium-162m

Holmium

1000

Holmium-164

Holmium

1000

Holmium-164m

Holmium

1000

Holmium-166

Holmium

100

3.7

Holmium-166m

Holmium

0.037

Holmium-167

Holmium

100

3.7

Hydrogen-3

Hydrogen

100

3.7

Indium-109

Indium

100

3.7

Indium-110 (4.9 hr)

Indium

0.37

Indium-110 (69.1 min)

Indium

100

3.7

Indium-111

Indium

100

3.7

Indium-112

Indium

1000

Indium-113m

Indium

1000

Indium-114m

Indium

0.37

Indium-115

Indium

0.1

0.0037

Indium-115m

Indium

100

3.7

Indium-116m

Indium

100

3.7

Indium-117

Indium

1000

Indium-117m

Indium

100

3.7

Indium-119m

Indium

1000

Iodine-120

Iodine

0.37

Iodine-120m

Iodine

100

3.7

Iodine-121

Iodine

100

3.7

Iodine-123

Iodine

0.37

Iodine-124

Iodine

0.1

0.0037

Iodine-125

Iodine

0.01

0.00037

Iodine-126

Iodine

0.01

0.00037

Iodine-128

Iodine

1000

Iodine-129

Iodine

0.001

0.000037

Iodine-130

Iodine

0.037

Iodine-131

Iodine

0.01

0.00037

Iodine-132

Iodine

0.37

Iodine-132m

Iodine

0.37

Iodine-133

Iodine

0.1

0.0037

Iodine-134

Iodine

100

3.7

Iodine-135

Iodine

0.37

Iridium-182

Iridium

1000

Iridium-184

Iridium

100

3.7

Iridium-185

Iridium

100

3.7

Iridium-186

Iridium

0.37

Iridium-187

Iridium

100

3.7

Iridium-188

Iridium

0.37

Iridium-189

Iridium

100

3.7

Iridium-190

Iridium

0.37

Iridium-190m

Iridium

1000

Iridium-192

Iridium

0.37

Iridium-192m

Iridium

100

3.7

Iridium-194

Iridium

100

3.7

Iridium-194m

Iridium

0.37

Iridium-195

Iridium

1000

Iridium-195m

Iridium

100

3.7

Iron-52

Iron

100

3.7

Iron-55

Iron

100

3.7

Iron-59

Iron

0.37

Iron-60

Iron

0.1

0.0037

Krypton-74

Krypton

0.37

Krypton-76

Krypton

0.37

Krypton-77

Krypton

0.37

Krypton-79

Krypton

100

3.7

Krypton-81

Krypton

1000

Krypton-83m

Krypton

1000

Krypton-85

Krypton

1000

Krypton-85m

Krypton

100

3.7

Krypton-87

Krypton

0.37

Krypton-88

Krypton

0.37

Lanthanum-131

Lanthanum

1000

Lanthanum-132

Lanthanum

100

3.7

Lanthanum-135

Lanthanum

1000

Lanthanum-137

Lanthanum

0.37

Lanthanum-138

Lanthanum

0.037

Lanthanum-140

Lanthanum

0.37

Lanthanum-141

Lanthanum

1000

Lanthanum-142

Lanthanum

100

3.7

Lanthanum-143

Lanthanum

1000

Lead-195m

Lead

1000

Lead-198

Lead

100

3.7

Lead-199

Lead

100

3.7

Lead-200

Lead

100

3.7

Lead-201

Lead

100

3.7

Lead-202

Lead

0.037

Lead-202m

Lead

0.37

Lead-203

Lead

100

3.7

Lead-205

Lead

100

3.7

Lead-209

Lead

1000

Lead-210

Lead

0.01

0.00037

Lead-211

Lead

100

3.7

Lead-212

Lead

0.37

Lead-214

Lead

100

3.7

Lutetium-169

Lutetium

0.37

Lutetium-170

Lutetium

0.37

Lutetium-171

Lutetium

0.37

Lutetium-172

Lutetium

0.37

Lutetium-173

Lutetium

100

3.7

Lutetium-174

Lutetium

0.37

Lutetium-174m

Lutetium

0.37

Lutetium-176

Lutetium

0.037

Lutetium-176m

Lutetium

1000

Lutetium-177

Lutetium

100

3.7

Lutetium-177m

Lutetium

0.37

Lutetium-178

Lutetium

1000

Lutetium-178m

Lutetium

1000

Lutetium-179

Lutetium

1000

Magnesium-28

Magnesium

0.37

Manganese-51

Manganese

1000

Manganese-52

Manganese

0.37

Manganese-52m

Manganese

1000

Manganese-53

Manganese

1000

Manganese-54

Manganese

0.37

Manganese-56

Manganese

100

3.7

Mendelevium-257

Mendelevium

101

100

3.7

Mendelevium-258

Mendelevium

101

0.037

Mercury-193

Mercury

100

3.7

Mercury-193m

Mercury

0.37

Mercury-194

Mercury

0.1

0.0037

Mercury-195

Mercury

100

3.7

Mercury-195m

Mercury

100

3.7

Mercury-197

Mercury

1000

Mercury-197m

Mercury

1000

Mercury-199m

Mercury

1000

Mercury-203

Mercury

0.37

Molybdenum-101

Molybdenum

1000

Molybdenum-90

Molybdenum

100

3.7

Molybdenum-93

Molybdenum

100

3.7

Molybdenum-93m

Molybdenum

0.37

Molybdenum-99

Molybdenum

100

3.7

Neodymium-136

Neodymium

1000

Neodymium-138

Neodymium

1000

Neodymium-139

Neodymium

1000

Neodymium-139m

Neodymium

100

3.7

Neodymium-141

Neodymium

1000

Neodymium-147

Neodymium

0.37

Neodymium-149

Neodymium

100

3.7

Neodymium-151

Neodymium

1000

Neptunium-232

Neptunium

1000

Neptunium-233

Neptunium

1000

Neptunium-234

Neptunium

0.37

Neptunium-235

Neptunium

1000

Neptunium-236 (1.2 E 5 yr)

Neptunium

0.1

0.0037

Neptunium-236 (22.5 hr)

Neptunium

100

3.7

Neptunium-237

Neptunium

0.01

0.00037

Neptunium-238

Neptunium

0.37

Neptunium-239

Neptunium

100

3.7

Neptunium-240

Neptunium

100

3.7

Nickel-56

Nickel

0.37

Nickel-57

Nickel

0.37

Nickel-59

Nickel

100

3.7

Nickel-63

Nickel

100

3.7

Nickel-65

Nickel

100

3.7

Nickel-66

Nickel

0.37

Niobium-88

Niobium

100

3.7

Niobium-89 (122 min)

Niobium

100

3.7

Niobium-89 (66 min)

Niobium

100

3.7

Niobium-90

Niobium

0.37

Niobium-93m

Niobium

100

3.7

Niobium-94

Niobium

0.37

Niobium-95

Niobium

0.37

Niobium-95m

Niobium

100

3.7

Niobium-96

Niobium

0.37

Niobium-97

Niobium

100

3.7

Niobium-98

Niobium

1000

Osmium-180

Osmium

1000

Osmium-181

Osmium

100

3.7

Osmium-182

Osmium

100

3.7

Osmium-185

Osmium

0.37

Osmium-189m

Osmium

1000

Osmium-191

Osmium

100

3.7

Osmium-191m

Osmium

1000

Osmium-193

Osmium

100

3.7

Osmium-194

Osmium

0.037

Palladium-100

Palladium

100

3.7

Palladium-101

Palladium

100

3.7

Palladium-103

Palladium

100

3.7

Palladium-107

Palladium

100

3.7

Palladium-109

Palladium

1000

Phosphorus-32

Phosphorus

0.1

0.0037

Phosphorus-33

Phosphorus

0.037

Platinum-186

Platinum

100

3.7

Platinum-188

Platinum

100

3.7

Platinum-189

Platinum

100

3.7

Platinum-191

Platinum

100

3.7

Platinum-193

Platinum

1000

Platinum-193m

Platinum

100

3.7

Platinum-195m

Platinum

100

3.7

Platinum-197

Platinum

1000

Platinum-197m

Platinum

1000

Platinum-199

Platinum

1000

Platinum-200

Platinum

100

3.7

Plutonium-234

Plutonium

1000

Plutonium-235

Plutonium

1000

Plutonium-236

Plutonium

0.1

0.0037

Plutonium-237

Plutonium

1000

Plutonium-238

Plutonium

0.01

0.00037

Plutonium-239

Plutonium

0.01

0.00037

Plutonium-240

Plutonium

0.01

0.00037

Plutonium-241

Plutonium

0.037

Plutonium-242

Plutonium

0.01

0.00037

Plutonium-243

Plutonium

1000

Plutonium-244

Plutonium

0.01

0.00037

Plutonium-245

Plutonium

100

3.7

Polonium-203

Polonium

100

3.7

Polonium-205

Polonium

100

3.7

Polonium-207

Polonium

0.37

Polonium-210

Polonium

0.01

0.00037

Potassium-40

Potassium

0.037

Potassium-42

Potassium

100

3.7

Potassium-43

Potassium

0.37

Potassium-44

Potassium

100

3.7

Potassium-45

Potassium

1000

Praseodymium-136

Praseodymium

1000

Praseodymium-137

Praseodymium

1000

Praseodymium-138m

Praseodymium

100

3.7

Praseodymium-139

Praseodymium

1000

Praseodymium-142

Praseodymium

100

3.7

Praseodymium-142m

Praseodymium

1000

Praseodymium-143

Praseodymium

0.37

Praseodymium-144

Praseodymium

1000

Praseodymium-145

Praseodymium

1000

Praseodymium-147

Praseodymium

1000

Promethium-141

Promethium

1000

Promethium-143

Promethium

100

3.7

Promethium-144

Promethium

0.37

Promethium-145

Promethium

100

3.7

Promethium-146

Promethium

0.37

Promethium-147

Promethium

0.37

Promethium-148

Promethium

0.37

Promethium-148m

Promethium

0.37

Promethium-149

Promethium

100

3.7

Promethium-150

Promethium

100

3.7

Promethium-151

Promethium

100

3.7

Protactinium-227

Protactinium

100

3.7

Protactinium-228

Protactinium

0.37

Protactinium-230

Protactinium

0.37

Protactinium-231

Protactinium

0.01

0.00037

Protactinium-232

Protactinium

0.37

Protactinium-233

Protactinium

100

3.7

Protactinium-234

Protactinium

0.37

RADIONUCLIDES $†

0.037

Radium-223

Radium

0.037

Radium-224

Radium

0.37

Radium-225

Radium

0.037

Radium-226 **

Radium

0.1

0.0037

Radium-227

Radium

1000

Radium-228

Radium

0.1

0.0037

Radon-220

Radon

0.1

0.0037

Radon-222

Radon

0.1

0.0037

Rhenium-177

Rhenium

1000

Rhenium-178

Rhenium

1000

Rhenium-181

Rhenium

100

3.7

Rhenium-182 (12.7 hr)

Rhenium

0.37

Rhenium-182 (64.0 hr)

Rhenium

0.37

Rhenium-184

Rhenium

0.37

Rhenium-184m

Rhenium

0.37

Rhenium-186

Rhenium

100

3.7

Rhenium-186m

Rhenium

0.37

Rhenium-187

Rhenium

1000

Rhenium-188

Rhenium

1000

Rhenium-188m

Rhenium

1000

Rhenium-189

Rhenium

1000

Rhodium-100

Rhodium

0.37

Rhodium-101

Rhodium

0.37

Rhodium-101m

Rhodium

100

3.7

Rhodium-102

Rhodium

0.37

Rhodium-102m

Rhodium

0.37

Rhodium-103m

Rhodium

1000

Rhodium-105

Rhodium

100

3.7

Rhodium-106m

Rhodium

0.37

Rhodium-107

Rhodium

1000

Rhodium-99

Rhodium

0.37

Rhodium-99m

Rhodium

100

3.7

Rubidium-79

Rubidium

1000

Rubidium-81

Rubidium

100

3.7

Rubidium-81m

Rubidium

1000

Rubidium-82m

Rubidium

0.37

Rubidium-83

Rubidium

0.37

Rubidium-84

Rubidium

0.37

Rubidium-86

Rubidium

0.37

Rubidium-87

Rubidium

0.37

Rubidium-88

Rubidium

1000

Rubidium-89

Rubidium

1000

Ruthenium-103

Ruthenium

0.37

Ruthenium-105

Ruthenium

100

3.7

Ruthenium-106

Ruthenium

0.037

Ruthenium-94

Ruthenium

1000

Ruthenium-97

Ruthenium

100

3.7

Samarium-141

Samarium

1000

Samarium-141m

Samarium

1000

Samarium-142

Samarium

1000

Samarium-145

Samarium

100

3.7

Samarium-146

Samarium

0.01

0.00037

Samarium-147

Samarium

0.01

0.00037

Samarium-151

Samarium

0.37

Samarium-153

Samarium

100

3.7

Samarium-155

Samarium

1000

Samarium-156

Samarium

100

3.7

Scandium-43

Scandium

1000

Scandium-44

Scandium

100

3.7

Scandium-44m

Scandium

0.37

Scandium-46

Scandium

0.37

Scandium-47

Scandium

100

3.7

Scandium-48

Scandium

0.37

Scandium-49

Scandium

1000

Selenium-70

Selenium

1000

Selenium-73

Selenium

0.37

Selenium-73m

Selenium

100

3.7

Selenium-75

Selenium

0.37

Selenium-79

Selenium

0.37

Selenium-81

Selenium

1000

Selenium-81m

Selenium

1000

Selenium-83

Selenium

1000

Silicon-31

Silicon

1000

Silicon-32

Silicon

0.037

Silver-102

Silver

100

3.7

Silver-103

Silver

1000

Silver-104

Silver

1000

Silver-104m

Silver

1000

Silver-105

Silver

0.37

Silver-106

Silver

1000

Silver-106m

Silver

0.37

Silver-108m

Silver

0.37

Silver-110m

Silver

0.37

Silver-111

Silver

0.37

Silver-112

Silver

100

3.7

Silver-115

Silver

1000

Sodium-22

Sodium

0.37

Sodium-24

Sodium

0.37

Strontium-80

Strontium

100

3.7

Strontium-81

Strontium

1000

Strontium-83

Strontium

100

3.7

Strontium-85

Strontium

0.37

Strontium-85m

Strontium

1000

Strontium-87m

Strontium

100

3.7

Strontium-89

Strontium

0.37

Strontium-90

Strontium

0.1

0.0037

Strontium-91

Strontium

0.37

Strontium-92

Strontium

100

3.7

Sulfur-35

Sulfur

0.037

Tantalum-172

Tantalum

100

3.7

Tantalum-173

Tantalum

100

3.7

Tantalum-174

Tantalum

100

3.7

Tantalum-175

Tantalum

100

3.7

Tantalum-176

Tantalum

0.37

Tantalum-177

Tantalum

1000

Tantalum-178

Tantalum

1000

Tantalum-179

Tantalum

1000

Tantalum-180

Tantalum

100

3.7

Tantalum-180m

Tantalum

1000

Tantalum-182

Tantalum

0.37

Tantalum-182m

Tantalum

1000

Tantalum-183

Tantalum

100

3.7

Tantalum-184

Tantalum

0.37

Tantalum-185

Tantalum

1000

Tantalum-186

Tantalum

1000

Technetium-101

Technetium

1000

Technetium-104

Technetium

1000

Technetium-93

Technetium

100

3.7

Technetium-93m

Technetium

1000

Technetium-94

Technetium

0.37

Technetium-94m

Technetium

100

3.7

Technetium-96

Technetium

0.37

Technetium-96m

Technetium

1000

Technetium-97

Technetium

100

3.7

Technetium-97m

Technetium

100

3.7

Technetium-98

Technetium

0.37

Technetium-99

Technetium

0.37

Technetium-99m

Technetium

100

3.7

Tellurium-116

Tellurium

1000

Tellurium-121

Tellurium

0.37

Tellurium-121m

Tellurium

0.37

Tellurium-123

Tellurium

0.37

Tellurium-123m

Tellurium

0.37

Tellurium-125m

Tellurium

0.37

Tellurium-127

Tellurium

1000

Tellurium-127m

Tellurium

0.37

Tellurium-129

Tellurium

1000

Tellurium-129m

Tellurium

0.37

Tellurium-131

Tellurium

1000

Tellurium-131m

Tellurium

0.37

Tellurium-132

Tellurium

0.37

Tellurium-133

Tellurium

1000

Tellurium-133m

Tellurium

1000

Tellurium-134

Tellurium

1000

Terbium-147

Terbium

100

3.7

Terbium-149

Terbium

100

3.7

Terbium-150

Terbium

100

3.7

Terbium-151

Terbium

0.37

Terbium-153

Terbium

100

3.7

Terbium-154

Terbium

0.37

Terbium-155

Terbium

100

3.7

Terbium-156

Terbium

0.37

Terbium-156m (24.4 hr)

Terbium

1000

Terbium-156m (5.0 hr)

Terbium

1000

Terbium-157

Terbium

100

3.7

Terbium-158

Terbium

0.37

Terbium-160

Terbium

0.37

Terbium-161

Terbium

100

3.7

Thallium-194

Thallium

1000

Thallium-194m

Thallium

100

3.7

Thallium-195

Thallium

100

3.7

Thallium-197

Thallium

100

3.7

Thallium-198

Thallium

0.37

Thallium-198m

Thallium

100

3.7

Thallium-199

Thallium

100

3.7

Thallium-200

Thallium

0.37

Thallium-201

Thallium

1000

Thallium-202

Thallium

0.37

Thallium-204

Thallium

0.37

Thorium-226

Thorium

100

3.7

Thorium-227

Thorium

0.037

Thorium-228

Thorium

0.01

0.00037

Thorium-229

Thorium

0.001

0.000037

Thorium-230

Thorium

0.01

0.00037

Thorium-231

Thorium

100

3.7

Thorium-232 **

Thorium

0.001

0.000037

Thorium-234

Thorium

100

3.7

Thulium-162

Thulium

1000

Thulium-166

Thulium

0.37

Thulium-167

Thulium

100

3.7

Thulium-170

Thulium

0.37

Thulium-171

Thulium

100

3.7

Thulium-172

Thulium

100

3.7

Thulium-173

Thulium

100

3.7

Thulium-175

Thulium

1000

Tin-110

Tin

100

3.7

Tin-111

Tin

1000

Tin-113

Tin

0.37

Tin-117m

Tin

100

3.7

Tin-119m

Tin

0.37

Tin-121

Tin

1000

Tin-121m

Tin

0.37

Tin-123

Tin

0.37

Tin-123m

Tin

1000

Tin-125

Tin

0.37

Tin-126

Tin

0.037

Tin-127

Tin

100

3.7

Tin-128

Tin

1000

Titanium-44

Titanium

0.037

Titanium-45

Titanium

1000

Tungsten-176

Tungsten

1000

Tungsten-177

Tungsten

100

3.7

Tungsten-178

Tungsten

100

3.7

Tungsten-179

Tungsten

1000

Tungsten-181

Tungsten

100

3.7

Tungsten-185

Tungsten

0.37

Tungsten-187

Tungsten

100

3.7

Tungsten-188

Tungsten

0.37

Uranium-230

Uranium

0.037

Uranium-231

Uranium

1000

Uranium-232

Uranium

0.01

0.00037

Uranium-233

Uranium

0.1

0.0037

Uranium-234 **

Uranium

0.1

0.0037

Uranium-235 **

Uranium

0.1

0.0037

Uranium-236

Uranium

0.1

0.0037

Uranium-237

Uranium

100

3.7

Uranium-238 **

Uranium

0.1

0.0037

Uranium-239

Uranium

1000

Uranium-240

Uranium

1000

Vanadium-47

Vanadium

1000

Vanadium-48

Vanadium

0.37

Vanadium-49

Vanadium

1000

Xenon-120

Xenon

100

3.7

Xenon-121

Xenon

0.37

Xenon-122

Xenon

100

3.7

Xenon-123

Xenon

0.37

Xenon-125

Xenon

100

3.7

Xenon-127

Xenon

100

3.7

Xenon-129m

Xenon

1000

Xenon-131m

Xenon

1000

Xenon-133

Xenon

1000

Xenon-133m

Xenon

1000

Xenon-135

Xenon

100

3.7

Xenon-135m

Xenon

0.37

Xenon-138

Xenon

0.37

Ytterbium-162

Ytterbium

1000

Ytterbium-166

Ytterbium

0.37

Ytterbium-167

Ytterbium

1000

Ytterbium-169

Ytterbium

0.37

Ytterbium-175

Ytterbium

100

3.7

Ytterbium-177

Ytterbium

1000

Ytterbium-178

Ytterbium

1000

Yttrium-86

Yttrium

0.37

Yttrium-86m

Yttrium

1000

Yttrium-87

Yttrium

0.37

Yttrium-88

Yttrium

0.37

Yttrium-90

Yttrium

0.37

Yttrium-90m

Yttrium

100

3.7

Yttrium-91

Yttrium

0.37

Yttrium-91m

Yttrium

1000

Yttrium-92

Yttrium

100

3.7

Yttrium-93

Yttrium

100

3.7

Yttrium-94

Yttrium

1000

Yttrium-95

Yttrium

1000

Zinc-62

Zinc

100

3.7

Zinc-63

Zinc

1000

Zinc-65

Zinc

0.37

Zinc-69

Zinc

1000

Zinc-69m

Zinc

100

3.7

Zinc-71m

Zinc

100

3.7

Zinc-72

Zinc

100

3.7

Zirconium-86

Zirconium

100

3.7

Zirconium-88

Zirconium

0.37

Zirconium-89

Zirconium

100

3.7

Zirconium-93

Zirconium

0.037

Zirconium-95

Zirconium

0.37

Zirconium-97

Zirconium

0.37