

The text appearing in italic type is not part of the proper shipping name of the hazardous material and is used for descriptive or references purposes only. This appendix contains a numerical list of the United Nations (UN) and North American (NA) identification (ID) numbers for proper shipping names of the hazardous materials listed alphabetically in Appendix A. USPS Marketing Mail Eligibility Decision TreeĪppendix B Numerical Listing of Proper Shipping Names by Identification (ID) Number.Designing Letter and Reply Mail (PUB 25).
