IBC bulk packaging
Authorized IBCs: Metal (31A, 31B and 31N); Rigid plastics (31H1 and 31H2); Composite (31HZ1 and 31HA2, 31HB2, 31HN2, 31HD2 and 31HH2). Additional Requirement: Only liquids with a vapor pressure less than or equal to 110 kPa at 50 °C (1.1 bar at 122 °F), or 130 kPa at 55 °C (1.3 bar at 131 °F) are authorized, except for UN2672 (also see special provision IP8 in Table 2 for UN2672). Table 3 (Large Packaging authorizations): Table 3—IB Codes [Large packaging authorizations] IB3 Authorized Large Packagings (LIQUIDS) (PG III materials only) 2 Inner packagings: Large outer packagings: Glass 10 liter steel (50A). Plastics 30 liter aluminum (50B). Metal 40 liter metal other than steel or aluminum (50N). rigid plastics (50H). natural wood (50C). plywood (50D). reconstituted wood (50F). rigid fiberboard (50G).
2 UN entries reference IB3 in column 7.