49 CFR 172 Special Provisions – IB-Codes and IP-Codes
These provisions apply only to transportation in IBCs and Large Packagings.
| Code | Description | |
|---|---|---|
| IB1 | Authorized IBCs: Metal (31A, 31B and 31N). Additional Requirement: Only liquids with a vapor pressure less than or equal to 110 kPa at 50 [deg]C (1.1 bar at 122 [deg]F), or 130 kPa at 55 [deg]C (1.3 bar at 131 [deg]F) are authorized. | Browse IB1 |
| IB2 | Authorized IBCs: Metal (31A, 31B and 31N);
Rigid plastics (31H1 and 31H2); Composite
(31HZ1). Additional Requirement: Only liquids with a vapor pressure less than or equal to 110 kPa at 50 [deg]C (1.1 bar at 122 [deg]F), or 130 kPa at 55 [deg]C (1.3 bar at 131 [deg]F) are authorized. | Browse IB2 |
| IB3 | 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 [deg]C (1.1 bar at 122 [deg]F), or 130 kPa at 55 [deg]C (1.3 bar at 131 [deg]F) are authorized, except for UN2672 (also see Special Provision IP8 for UN2672). | Browse IB3 |
| IB4 | Authorized IBCs: Metal (11A, 11B, 11N, 21A, 21B, 21N, 31A, 31B and 31N). | Browse IB4 |
| IB5 | Authorized IBCs: Metal (11A, 11B, 11N, 21A, 21B, 21N, 31A, 31B and 31N); Rigid plastics (11H1, 11H2, 21H1, 21H2, 31H1 and 31H2); Composite (11HZ1, 21HZ1 and 31HZ1). | Browse IB5 |
| IB6 | Authorized IBCs: Metal (11A, 11B, 11N, 21A,
21B, 21N, 31A, 31B and 31N); Rigid plastics
(11H1, 11H2, 21H1, 21H2, 31H1 and 31H2);
Composite (11HZ1, 11HZ2, 21HZ1, 21HZ2 and
31HZ1). Additional Requirement: Composite IBCs 11HZ2 and 21HZ2 may not be used when the hazardous materials being transported may become liquid during transport. | Browse IB6 |
| IB7 | Authorized IBCs: Metal (11A, 11B, 11N, 21A,
21B, 21N, 31A, 31B and 31N); Rigid plastics
(11H1, 11H2, 21H1, 21H2, 31H1 and 31H2);
Composite (11HZ1, 11HZ2, 21HZ1, 21HZ2 and
31HZ1); Wooden (11C, 11D and 11F). Additional Requirement: Liners of wooden IBCs must be sift-proof. | Browse IB7 |
| IB8 | Authorized IBCs: Metal (11A, 11B, 11N, 21A, 21B, 21N, 31A, 31B and 31N); Rigid plastics (11H1, 11H2, 21H1, 21H2, 31H1 and 31H2 ); Composite (11HZ1, 11HZ2, 21HZ1, 21HZ2 and 31HZ1); Fiberboard (11G); Wooden (11C, 11D and 11F); Flexible (13H1, 13H2, 13H3, 13H4, 13H5, 13L1, 13L2, 13L3, 13L4, 13M1 or 13M2). | Browse IB8 |
| IB9 | IBCs are only authorized if approved by the Associate Administrator. | Browse IB9 |
| IP1 | IBCs must be packed in closed freight containers or a closed transport vehicle. | Browse IP1 |
| IP2 | When IBCs other than metal or rigid plastics IBCs are used, they must be offered for transportation in a closed freight container or a closed transport vehicle. | Browse IP2 |
| IP3 | Flexible IBCs must be sift-proof and water- resistant or must be fitted with a sift- proof and water-resistant liner. | Browse IP3 |
| IP4 | Flexible, fiberboard or wooden IBCs must be sift-proof and water-resistant or be fitted with a sift-proof and water-resistant liner. | Browse IP4 |
| IP5 | IBCs must have a device to allow venting. The inlet to the venting device must be located in the vapor space of the IBC under maximum filling conditions. | Browse IP5 |
| IP6 | Non-specification bulk bins are authorized. | Browse IP6 |
| IP7 | For UN identification numbers 1327, 1363, 1364, 1365, 1386, 1841, 2211, 2217, 2793 and 3314, IBCs are not required to meet the IBC performance tests specified in part 178, subpart N of this subchapter. | Browse IP7 |
| IP8 | Ammonia solutions may be transported in rigid or composite plastic IBCs (31H1, 31H2 and 31HZ1) that have successfully passed, without leakage or permanent deformation, the hydrostatic test specified in Sec. 178.814 of this subchapter at a test pressure that is not less than 1.5 times the vapor pressure of the contents at 55 [deg]C (131 [deg]F). | Browse IP8 |
| IP13 | Transportation by vessel in IBCs is prohibited. | Browse IP13 |
| IP14 | Air must be eliminated from the vapor space by nitrogen or other means. | Browse IP14 |
| IP15 | For UN2031 with more than 55% nitric acid, rigid plastic IBCs and composite IBCs with a rigid plastic inner receptacle are authorized for two years from the date of IBC manufacture. | Browse IP15 |
| IP16 | IBCs of type 31A and 31N are only authorized if approved by the Associate Administrator. | Browse IP16 |
| IP20 | Dry sodium cyanide or potassium cyanide is also permitted in siftproof, water- resistant, fiberboard IBCs when transported in closed freight containers or transport vehicles. | Browse IP20 |