49 CFR 172 Special Provisions – N-Codes

These provisions apply only to non-bulk packagings.
CodeDescription
N77 For materials of not more than two percent active ingredients by weight, packagings need not conform to the requirements of part 178 of this subchapter, if liquid contents are absorbed in an inert material.Browse N77
N78Packages consisting of inner glass, earthenware, or polyethylene or other nonfragile plastic bottles or jars not over 0.5 kg (1.1 pounds) capacity each, or metal cans not over five pounds capacity each, packed in outer wooden boxes, barrels or kegs, or fiberboard boxes are authorized and need not conform to the requirements of part 178 of this subchapter. Net weight of contents in fiberboard boxes may not exceed 29 kg (64 pounds). Net weight of contents in wooden boxes, barrels or kegs may not exceed 45 kg (99 pounds).Browse N78
N79Packages consisting of tightly closed metal inner packagings not over 0.5 kg (1.1 pounds) capacity each, packed in outer wooden or fiberboard boxes, or wooden barrels, are authorized and need not conform to the requirements of part 178 of this subchapter. Net weight of contents may not exceed 15 kg (33 pounds).Browse N79
N80Packages consisting of one inner metal can, not over 2.5 kg (5.5 pounds) capacity, packed in an outer wooden or fiberboard box, or a wooden barrel, are authorized and need not conform to the requirements of part 178 of this subchapter.Browse N80
N82See §173.115 of this subchapter for classification criteria for flammable aerosols.Browse N82
N83This material may not be transported in quantities of more than 11.5 kg (25.4 lbs) per package.Browse N83
N84The maximum quantity per package is 500 g (1.1 lbs.).Browse N84
N85Packagings certified at the Packing Group I performance level may not be used.Browse N85
N86UN pressure receptacles made of aluminum alloy are not authorized.Browse N86
N87The use of copper valves on UN pressure receptacles is prohibited.Browse N87
N88Any metal part of a UN pressure receptacle in contact with the contents may not contain more than 65% copper, with a tolerance of 1%.Browse N88
N89When steel UN pressure receptacles are used, only those bearing the “H” mark are authorized.Browse N89
N90Metal packagings are not authorized.Browse N90
N95UN1075, Liquefied petroleum gas and UN1978, Propane authorized for transport in DOT 4BA240 cylinders is not subject to the UN identification number and proper shipping name marking or the label requirements of this part subject to the following conditions:
  • a. The cylinder must be transported in a closed motor vehicle displaying FLAMMABLE GAS placards in accordance with subpart F of part 172 of this subchapter.
  • b. Shipping papers at all times must reflect a correct current accounting of all cylinders both full and expended.
  • c. The cylinders are collected and transported by a private or a contract carrier for reconditioning, reuse or disposal.
Browse N95