TIH · Toxic inhalation hazard · Zone A · Isolate immediately upwind before approach

ERG 2024 · Guide 151

Substances - Toxic (Non-Combustible)

UN3381 · Poisonous by inhalation liquid, n.o.s. (Inhalation Hazard Zone A)

Also listed as: Toxic by inhalation liquid, n.o.s. (Inhalation Hazard Zone A)

Class 6.1TIH · Zone A

Toxic (Poison) placard (DOT 49 CFR §172)

CHEMTREC · 24/7

1-800-424-9300

Right now: Move upwind. Isolate 100 m minimum. Deny entry. Call CHEMTREC with shipping paper in hand.

More contacts →

Green Table 1 — Initial isolation & protective action distances

Full table →

Small spill · Isolate

60 m

Day

0.6 km

Night

1.8 km

Large spill · Isolate

200 m

Day

2.3 km

Night

4.2 km

Potential Hazards

Health

Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
Avoid any skin contact.
Fire may produce irritating, corrosive and/or toxic gases.
Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental contamination.

Fire or explosion

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Containers may explode when heated.
Runoff may pollute waterways.

Public Safety

General

CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.
Keep unauthorized personnel away.
Stay upwind, uphill and/or upstream.

Protective clothing

Wear positive pressure self-contained breathing apparatus (SCBA).
Wear chemical protective clothing that is specifically recommended by the manufacturer when there is NO RISK OF FIRE.
Structural firefighters' protective clothing provides thermal protection but only limited chemical protection.

Evacuation

Immediate precautionary measure
Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
Spill
For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind direction, as necessary.
Fire
If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.

Emergency Response

Fire

Small Fire

Dry chemical, CO2 or water spray.

Large Fire

Water spray, fog or regular foam.
If it can be done safely, move undamaged containers away from the area around the fire.
Dike runoff from fire control for later disposal.
Avoid aiming straight or solid streams directly onto the product.

Fire Involving Tanks, Rail Tank Cars or Highway Tanks

Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles.
Do not get water inside containers.
Cool containers with flooding quantities of water until well after fire is out.
Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank.
ALWAYS stay away from tanks in direct contact with flames.
For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn.

Spill or leak

Do not touch damaged containers or spilled material unless wearing appropriate protective clothing.
Stop leak if you can do it without risk.
Prevent entry into waterways, sewers, basements or confined areas.
Cover with plastic sheet to prevent spreading.
Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers.
DO NOT GET WATER INSIDE CONTAINERS.
For solids, prevent dust cloud and avoid inhalation of dust.

First Aid

Refer to the “General First Aid” section.

TIH · Toxic inhalation hazard · Zone A · Isolate immediately upwind before approach

ERG 2024 · Guide 151

Substances - Toxic (Non-Combustible)

UN3381 · Poisonous by inhalation liquid, n.o.s. (Inhalation Hazard Zone A)

Also listed as: Toxic by inhalation liquid, n.o.s. (Inhalation Hazard Zone A)

Class 6.1TIH · Zone A

CHEMTREC · 24/7

1-800-424-9300

Right now: Move upwind. Isolate 100 m minimum. Deny entry. Call CHEMTREC with shipping paper in hand.

More contacts →

Green Table 1 — Initial isolation & protective action distances

Full table →

Small spill · Isolate

60 m

Day

0.6 km

Night

1.8 km

Large spill · Isolate

200 m

Day

2.3 km

Night

4.2 km

Potential Hazards

Health

Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
Avoid any skin contact.
Fire may produce irritating, corrosive and/or toxic gases.
Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental contamination.

Fire or explosion

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Containers may explode when heated.
Runoff may pollute waterways.

Public Safety

General

CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.
Keep unauthorized personnel away.
Stay upwind, uphill and/or upstream.

Protective clothing

Wear positive pressure self-contained breathing apparatus (SCBA).
Wear chemical protective clothing that is specifically recommended by the manufacturer when there is NO RISK OF FIRE.
Structural firefighters' protective clothing provides thermal protection but only limited chemical protection.

Evacuation

Immediate precautionary measure
Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
Spill
For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind direction, as necessary.
Fire
If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.

Emergency Response

Fire

Small Fire

Dry chemical, CO2 or water spray.

Large Fire

Water spray, fog or regular foam.
If it can be done safely, move undamaged containers away from the area around the fire.
Dike runoff from fire control for later disposal.
Avoid aiming straight or solid streams directly onto the product.

Fire Involving Tanks, Rail Tank Cars or Highway Tanks

Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles.
Do not get water inside containers.
Cool containers with flooding quantities of water until well after fire is out.
Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank.
ALWAYS stay away from tanks in direct contact with flames.
For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn.

Spill or leak

Do not touch damaged containers or spilled material unless wearing appropriate protective clothing.
Stop leak if you can do it without risk.
Prevent entry into waterways, sewers, basements or confined areas.
Cover with plastic sheet to prevent spreading.
Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers.
DO NOT GET WATER INSIDE CONTAINERS.
For solids, prevent dust cloud and avoid inhalation of dust.

First Aid

Refer to the “General First Aid” section.