49 CFR 172 Special Provision A2 (A-Codes)

These provisions apply only to transportation by aircraft.

Code	A2
Description	Single packagings are not permitted on aircraft.
HazMat with this Code	UN 1421 - Alkali metal alloys, liquid, n.o.s UN 1389 - Alkali metal amalgam, liquid UN 3482 - Alkali metal dispersions, flammable or Alkaline earth metal dispersions, flammable UN 1391 - Alkali metal dispersions, or Alkaline earth metal dispersions UN 1310 - Ammonium picrate, wetted with not less than 10 percent water, by mass UN 1571 - Barium azide, wetted with not less than 50 percent water, by mass UN 2429 - Calcium chlorate aqueous solution UN 2988 - Chlorosilanes, water-reactive, flammable, corrosive, n.o.s UN 2852 - Dipicryl sulfide, wetted with not less than 10 percent water, by mass UN 1183 - Ethyldichlorosilane UN 3149 - Hydrogen peroxide and peroxyacetic acid mixtures, stabilized with acids, water, and not more than 5 percent peroxyacetic acid UN 2014 - Hydrogen peroxide, aqueous solutions with not less than 20 percent but not more than 40 percent hydrogen peroxide (stabilized as necessary) UN 1411 - Lithium aluminum hydride, ethereal UN 1378 - Metal catalyst, wetted with a visible excess of liquid UN 1242 - Methyldichlorosilane UN 3139 - Oxidizing liquid, n.o.s UN 1873 - Perchloric acid with more than 50 percent but not more than 72 percent acid, by mass UN 2427 - Potassium chlorate, aqueous solution UN 2428 - Sodium chlorate, aqueous solution UN 1354 - Trinitrobenzene, wetted with not less than 30 percent water, by mass UN 1355 - Trinitrobenzoic acid, wetted with not less than 30 percent water, by mass UN 1356 - Trinitrotoluene, wetted or TNT, wetted, with not less than 30 percent water by mass

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