[Code of Federal Regulations]
[Title 49, Volume 2]
[Revised as of October 1, 2001]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR173.24]

[Page 404-406]

TITLE 49--TRANSPORTATION

CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF
TRANSPORTATION

PART 173--SHIPPERS--GENERAL REQUIREMENTS FOR SHIPMENTS AND PACKAGINGS--Table of Contents

Subpart B--Preparation of Hazardous Materials for Transportation

Sec. 173.24 General requirements for packagings and packages.

173.24 (e) Compatibility.
(1) Even though certain packagings are specified
in this part, it is, nevertheless, the responsibility of the person
offering a hazardous material for transportation to ensure that such
packagings are compatible with their lading. This particularly applies
to corrosivity, permeability, softening, premature aging and
embrittlement.

(2) Packaging materials and contents must be such that there will be
no significant chemical or galvanic reaction between the materials and
contents of the package.

(3) Plastic packagings and receptacles. (i) Plastic used in
packagings and receptacles must be of a type compatible with the lading
and may not be permeable to an extent that a hazardous condition is
likely to occur during transportation, handling or refilling.
(ii) Each plastic packaging or receptacle which is used for liquid
hazardous materials must be capable of withstanding without failure the
procedure specified in appendix B of this part (``Procedure for Testing
Chemical Compatibility and Rate of Permeation in Plastic Packagings and
Receptacles''). The procedure specified in appendix B of this part must
be performed on each plastic packaging or receptacle used for Packing
Group I materials. The maximum rate of permeation of hazardous lading
through or into the plastic packaging or receptacles may not exceed 0.5
percent for materials meeting the definition of a Division 6.1 material
according to Sec. 173.132 and 2.0 percent for other hazardous materials,
when subjected to a temperature no lower than--
(A) 18 deg.C (64 deg.F) for 180 days in accordance with Test
Method 1 in appendix B of this part;
(B) 50 deg.C (122 deg.F) for 28 days in accordance with Test
Method 2 in appendix B of this part; or
(C) 60 deg.C (140 deg.F) for 14 days in accordance with Test
Method 3 in appendix B of this part.
(iii) Alternative procedures or rates of permeation are permitted if
they yield a level of safety equivalent to or greater than that provided
by paragraph (e)(3)(ii) of this section and are specifically approved by
the Associate Administrator.

(4) Mixed contents. Hazardous materials may not be packed or mixed
together in the same outer packaging with other hazardous or
nonhazardous materials if such materials are capable of reacting
dangerously with each other and causing--
(i) Combustion or dangerous evolution of heat;
(ii) Evolution of flammable, poisonous, or asphyxiant gases; or
(iii) Formation of unstable or corrosive materials.

(5) Packagings used for solids, which may become liquid at
temperatures likely to be encountered during transportation, must be
capable of containing the hazardous material in the liquid state.