[Code of Federal Regulations]

[Title 49, Volume 2]

[Revised as of October 1, 2005]

From the U.S. Government Printing Office via GPO Access

[CITE: 49CFR173.121]



[Page 496-497]

 

                        TITLE 49--TRANSPORTATION

 

   CHAPTER I--PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, 

                      DEPARTMENT OF TRANSPORTATION

 

PART 173_SHIPPERS_GENERAL REQUIREMENTS FOR SHIPMENTS AND PACKAGINGS

--Table of Contents

 

  Subpart D_Definitions Classification, Packing Group Assignments and 

    Exceptions for Hazardous Materials Other Than Class 1 and Class 7

 

Sec. 173.121  Class 3--Assignment of packing group.



    (a) The packing group of a Class 3 material is as assigned in column 

5 of the Sec. 172.101 table. When the Sec. 172.101 table provides more 

than one packing group for a hazardous material, the packing group shall 

be determined by applying the following criteria:



------------------------------------------------------------------------

                                  Flash point (closed-   Initial boiling

          Packing group                   cup)                point

------------------------------------------------------------------------

I...............................  ....................  <=35[deg]C

                                                         (95[deg]F)

II..............................  <23[deg]C (73[deg]F)  35[de

                                                         g]C (95[deg]F)

III.............................  =23[deg]C  35[de

                                   , <=60.5[deg]C (=73[deg]F,

                                   <=141[deg]F).

------------------------------------------------------------------------



    (b) Criteria for inclusion of viscous Class 3 materials in Packing 

Group III. (1) Viscous Class 3 materials in Packing Group II with a 

flash point of less than 23 [deg]C (73 [deg]F) may be grouped in Packing 

Group III provided that--

    (i) Less than 3 percent of the clear solvent layer separates in the 

solvent separation test;

    (ii) The mixture does not contain any substances with a primary or a 

subsidiary risk of Division 6.1 or Class 8;

    (iii) The capacity of the packaging is not more than 30 L (7.9 

gallons); and

    (iv) The viscosity and flash point are in accordance with the 

following table:



------------------------------------------------------------------------

                                         Jet

       Flow time t in seconds        diameter in     Flash point c.c.

                                          mm

------------------------------------------------------------------------

20