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Special Provisions
49 CFR 172 Special Provision A20 (A-Codes)
These provisions apply only to transportation by aircraft.
Code
A20
Description
Plastic bags as inner receptacles of combination packagings are not authorized for transportation by aircraft.
HazMat with this Code
UN 3317 - 2-Amino-4,6-Dinitrophenol, wetted with not less than 20 percent water by mass
UN 3376 - 4-Nitrophenylhydrazine, with not less than 30 percent water, by mass
UN 1390 - Alkali metal amides
UN 1394 - Aluminum carbide
UN 1395 - Aluminum ferrosilicon powder
UN 1396 - Aluminum powder, uncoated
UN 1923 - Calcium dithionite or Calcium hydrosulfite
UN 1868 - Decaborane
UN 1320 - Dinitrophenol, wetted with not less than 15 percent water, by mass
UN 1321 - Dinitrophenolates, wetted with not less than 15 percent water, by mass
UN 1322 - Dinitroresorcinol, wetted with not less than 15 percent water, by mass
UN 2545 - Hafnium powder, dry
UN 1326 - Hafnium powder, wetted with not less than 25 percent water (a visible excess of water must be present) (a) mechanically produced, particle size less than 53 microns; (b) chemically produced, particle size less than 840 microns
UN 2805 - Lithium hydride, fused solid
UN 1417 - Lithium silicon
UN 2004 - Magnesium diamide
UN 2624 - Magnesium silicide
UN 1336 - Nitroguanidine, wetted or Picrite, wetted with not less than 20 percent water, by mass
UN 1337 - Nitrostarch, wetted with not less than 20 percent water, by mass
UN 1369 - p-Nitrosodimethylaniline
UN 1483 - Peroxides, inorganic, n.o.s
UN 1339 - Phosphorus heptasulfide, free from yellow or white phosphorus
UN 1340 - Phosphorus pentasulfide, free from yellow or white phosphorus
UN 1341 - Phosphorus sesquisulfide, free from yellow or white phosphorus
UN 1343 - Phosphorus trisulfide, free from yellow or white phosphorus
UN 2257 - Potassium
UN 1929 - Potassium dithionite or Potassium hydrosulfite
UN 1491 - Potassium peroxide
UN 1382 - Potassium sulfide, anhydrous or Potassium sulfide with less than 30 percent water of crystallization
UN 2466 - Potassium superoxide
UN 1420 - Potassium, metal alloys, liquid
UN 3403 - Potassium, metal alloys, solid
UN 1428 - Sodium
UN 2835 - Sodium aluminum hydride
UN 1348 - Sodium dinitro-o-cresolate, wetted with not less than 15 percent water, by mass
UN 1384 - Sodium dithionite or Sodium hydrosulfite
UN 2318 - Sodium hydrosulfide, with less than 25 percent water of crystallization
UN 1504 - Sodium peroxide
UN 1385 - Sodium sulfide, anhydrous or Sodium sulfide with less than 30 percent water of crystallization
UN 2547 - Sodium superoxide
UN 1871 - Titanium hydride
UN 2546 - Titanium powder, dry
UN 1352 - Titanium powder, wetted with not less than 25 percent water (a visible excess of water must be present) (a) mechanically produced, particle size less than 53 microns; (b) chemically produced, particle size less than 840 microns
UN 1437 - Zirconium hydride
UN 2008 - Zirconium powder, dry
UN 1358 - Zirconium powder, wetted with not less than 25 percent water (a visible excess of water must be present) (a) mechanically produced, particle size less than 53 microns; (b) chemically produced, particle size less than 840 microns
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