49 CFR 172 Special Provision TP4 (TP-Codes)

These provisions apply to the transportation of hazardous materials in IM and UN Specification portable tanks.

Code	TP4
Description	The maximum degree of filling for portable tanks must not exceed 90%.
HazMat with this Code	NA9264 - 3,5-Dichloro-2,4,6-trifluoropyridine NA9263 - Chloropivaloyl chloride NA2927 - Ethyl phosphonothioic dichloride, anhydrous NA2845 - Ethyl phosphonous dichloride, anhydrous pyrophoric liquid NA2927 - Ethyl phosphorodichloridate NA9206 - Methyl phosphonic dichloride NA2845 - Methyl phosphonous dichloride, pyrophoric liquid NA1556 - Methyldichloroarsine UN 3532 - Polymerizing substance, liquid, stabilized, n.o.s UN 3534 - Polymerizing substance, liquid, temperature controlled, n.o.s UN 3531 - Polymerizing substance, solid, stabilized, n.o.s UN 3533 - Polymerizing substance, solid, temperature controlled, n.o.s UN 2912 - Radioactive material, low specific activity (LSA-I) non fissile or fissile-excepted UN 3321 - Radioactive material, low specific activity (LSA-II) non fissile or fissile-excepted UN 3322 - Radioactive material, low specific activity (LSA-III) non fissile or fissile excepted UN 1829 - Sulfur trioxide, stabilized NA9269 - Trimethoxysilane