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366 

49 CFR Ch. I (10–1–18 Edition) 

§ 172.102 

intermediate bulk containers (IBC) and 
UN13H4 woven plastic, coated and with 
liner flexible intermediate bulk con-
tainers (FIBCs) meeting the Packing 
Group II performance level and lined 
with a plastic liner of at least 6 mil 
thickness. 

d. All inner packagings placed inside bulk 

outer packagings must be blocked and 
braced to prevent movement during 
transportation that could cause the con-
tainer to open or fall over. Specification 
IBCs and FIBCs are to be secured to a 
pallet. 

B132

Except for transportation by aircraft, 

UN2813, Water reactive solid, n.o.s. (con-
tains magnesium, magnesium nitrides) in 
PG II or III may be packaged in sift-proof 
bulk packagings that prevent liquid from 
reaching the hazardous material with suffi-
cient venting to preclude dangerous accu-
mulation of flammable, corrosive or toxic 
gaseous emissions such as methane, hydro-
gen and ammonia. 

B133

Hydrochloric acid concentration not 

exceeding 38%, in Packing Group II, is au-
thorized to be packaged in UN31H1 or 
UN31HH1 intermediate bulk containers 
when loaded in accordance with the re-
quirements of § 173.35(h) of this subchapter. 

B134

For Large Packagings offered for 

transport by vessel, flexible or fibre inner 
packagings shall be sift-proof and water- 
resistant or shall be fitted with a sift-proof 
and water-resistant liner. 

B135

For Large Packagings offered for 

transport by vessel, flexible or fibre inner 
packagings shall be hermetically sealed. 

(4) 

IB Codes and IP Codes. 

These pro-

visions apply only to transportation in 
IBCs and Large Packagings. Table 1 au-
thorizes IBCs for specific proper ship-
ping names through the use of IB Codes 
assigned in the § 172.101 table of this 
subchapter. Table 2 defines IP Codes on 
the use of IBCs that are assigned to 
specific commodities in the § 172.101 
Table of this subchapter. Table 3 au-
thorizes Large Packagings for specific 
proper shipping names through the use 
of IB Codes assigned in the § 172.101 
table of this subchapter. Large Pack-
agings are authorized for the Packing 
Group III entries of specific proper 
shipping names when either special 
provision IB3 or IB8 is assigned to that 
entry in the § 172.101 Table. When no IB 
code is assigned in the § 172.101 Table 
for a specific proper shipping name, or 
in § 173.185 or § 173.225(e) Organic Per-
oxide Table for Type F organic perox-
ides, use of an IBC or Large Packaging 
for the material may be authorized 
when approved by the Associate Ad-
ministrator. The letter ‘‘Z’’ shown in 
the marking code for composite IBCs 
must be replaced with a capital code 
letter designation found in 
§ 178.702(a)(2) of this subchapter to 
specify the material used for the other 
packaging. Tables 1, 2, and 3 follow: 

T

ABLE

1—IB C

ODES

(IBC C

ODES

IBC code 

Authorized IBCs 

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 

°

C (1.1 

bar at 122 

°

F), or 130 kPa at 55 

°

C (1.3 bar at 131 

°

F) are authorized. 

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 

°

C (1.1 

bar at 122 

°

F), or 130 kPa at 55 

°

C (1.3 bar at 131 

°

F) are authorized. 

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 

°

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). 

IB4 .............................

Authorized IBCs: 

Metal (11A, 11B, 11N, 21A, 21B, 21N, 31A, 31B and 31N). 

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). 

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 ma-

terials being transported may become liquid during transport. 

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); Wood-
en (11C, 11D and 11F). 

Additional Requirement: 

Liners of wooden IBCs must be sift-proof. 

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); Fiber-
board (11G); Wooden (11C, 11D and 11F); Flexible (13H1, 13H2, 13H3, 13H4, 13H5, 13L1, 13L2, 
13L3, 13L4, 13M1 or 13M2). 

IB9 .............................

IBCs are only authorized if approved by the Associate Administrator. 

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