Yes. Persons who provide shipping papers to carriers must retain copies of those shipping papers for a period of two years.  Carriers are required to keep the shipping paper for a period of one year after the date that the shipping paper is provided to the carrier. For hazardous waste shipments, the shipping paper must be retained for three years by both the person who provides the shipping paper and the carrier.  (See §§ 172.201(e), 174.24(b), 175.33(c)(1), 176.24(b), and 177.817(f))

Effective January 1, 2007, PHMSA adopted a shipping description sequence consisting of identification number first, followed by the proper shipping name, hazard class or division number, and packing group (e.g., UN1133, Adhesives, 3, PG II).  This new shipping description sequence is mandatory on shipping documents prepared according to the International Civil Aviation Organization’s Technical Instructions and the International Maritime Dangerous Goods Code.  PHMSA adopted this shipping description sequence (see § 172.202(b)) with a 6-year transition period for mandatory compliance.  Therefore, for domestic shipments, the shipping description sequence in effect on December 31, 2006 (proper shipping name, hazard class or division number, ID number, and packing group), may be used until January 1, 2013 (see § 171.14(e)).

Yes.  The subsidiary hazard class(es) or subsidiary division number(s) must be entered in parentheses immediately following the primary hazard class or division number.  For example:  UN2744, Cyclobutyl chloroformate, 6.1 (8, 3), PG II.  (See § 172.202(a)(3)).