Downloaded from https://www.everyspec.com MIL---STD---101C TABLE II. Classification of materials in piping systems ---Continued 13 Nitric acid Blue Green Nitric acid, fuming Brown Green Nitrobenzene Brown Yellow Nitrogen Gray --------- Nitrogen dioxide Brown Green Nitrogen peroxide Brown Green Nitrogen tetroxide Brown Green Nitrogen---helium mixture Gray --------- Nitrogen---oxygen mixture Gray Green Nitrogen trifluoride Blue Green Nitromethane Yellow Blue Nitrosyl chloride Brown --------- Nitrous Oxide Blue --------- Oil, hydraulic Yellow Gray Oil, lubricating, N.O.S. Yellow --------- Oil, fish, vegetable, edible, N.O.S.
Yellow --------- Oxygen Green --------- Oxygen---carbon dioxide mixture Gray Green Oxygen, electrolytic Green --------- Oxygen fluoride Brown Green Oxygen, liquid (LOX) Green Gray Ozone Green Brown Paint Yellow --------- Paraldehyde Yellow --------- Pentane Yellow --------- Perchloric acid Green Blue 1---Pentene Yellow --------- Material Primary color warning Secondary color warning Petroleum gas (acetogen, butane--- propane mixture, 1---butene, cyclo- propane, isobutane, neo---pentane, and N.O.S.) Yellow ---------