49 CFR 172 Special Provision N3 (N-Codes)

These provisions apply only to non-bulk packagings.

Code	N3
Description	Glass inner packagings are permitted in combination or composite packagings only if the hazardous material is free from hydrofluoric acid.
HazMat with this Code	UN 1732 - Antimony pentafluoride UN 1775 - Fluoroboric acid UN 1776 - Fluorophosphoric acid anhydrous UN 1778 - Fluorosilicic acid UN 1777 - Fluorosulfonic acid UN 1782 - Hexafluorophosphoric acid UN 1740 - Hydrogendifluoride, solid, n.o.s UN 1811 - Potassium hydrogendifluoride solid UN 3421 - Potassium hydrogendifluoride solution UN 2439 - Sodium hydrogendifluoride UN 2699 - Trifluoroacetic acid