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24 - Appendix C - Incompatible Chemicals

Potential Peroxide Forming Chemicals
Acetic acid Acetaldehyde, ammonium nitrate, chromic acid, nitric acid, hydroxyl compounds, ethylene glycol, perchloric acid, peroxides, permanganates
Acetaldehyde Acetic acid, acetic anhydride, ammonia (anhydrous)
Acetylene Chlorine, bromine, copper, fluorine, silver, mercury
Acetone Concentrated nitric and sulfuric acid mixtures


Aqueous ammonia
Alkali and alkali earth metals Water, carbon tetrachloride, or other chlorinated hydrocarbons, carbon dioxide, the halogens
Aluminum Ammonium nitrate, bromates, chlorates, iodates, bromine vapor, carbon disulphide vapor

Ammonia, Anhydrous

Mercury, chlorine, calcium hypochlorite, iodine, bromine, hydrofluoric acid
Ammonium chloride Self-reacting
Ammonium nitrate Acids, aluminum metal powder, metal powders, flammable liquids, chlorates, nitrites, sulfur, finely divided organic or combustible materials
Aniline Nitric acid, hydrogen peroxide
Antimony Bromine vapor (all halogen vapors)
Arsenic Any bromate, chlorate, or iodate
Bromine Same as chlorine: ammonia, acetylene, butadiene, butane, methane, propane (or other petroleum gases), hydrogen, sodium carbon, turpentine, benzene, finely divided metals
Barium Carbon tetrachloride
Carbon, activated Calcium hypochlorite, all oxidizing agents


Ammonium salts, acids, arsenic, metal powders, sulfur, finely divided organic or combustible material, sulphides
Chromic acid Acetic acid, naphthalene, camphor, glycerin, turpentine, alcohol, flammable liquids in general
Chlorine Same as bromine: ammonia, acetylene, butadiene, butane, methane, propane (or other petroleum gases), hydrogen, sodium carbide, turpentine, benzene, finely divided metals
Chlorine dioxide Ammonia, methane, phosphine, hydrogen sulfide
Chloroform Disilane
Copper Acetylene, bromates, achlorates, iodates, hydrogen peroxide
Cumene hydroperoxide Acids, organic or inorganic
Disilane Chloroform, carbon tetrachloride

Flammable liquids

Ammonium nitrate, chromic acid, hydrogen peroxide, nitric acid, sodium peroxide, halogens
Hydrocarbons Fluorine, chlorine, bromine, chromic acid, sodium peroxide
Hydrocyanic acid Nitric acid, alkali
Hydrofluoric acid Ammonia, aqueous or anhydrous
Hydrogen peroxide Copper, chromium, iron, most metals or their salts, alcohols, acetone, ferrous sulphide, lead IV oxide, lead II oxide, lead sulphide, organic materials, aniline, nitromethane, flammable liquids, oxidizing gases
Hydrogen sulfide Fuming nitric acid, oxidizing gases
Iodine Acetylene, ammonia (aqueous or anhydrous), hydrogen acetylene, fulminic acid, ammonia
Maleic anhydride Magnesium hydroxide, lithium metal
Magnesium metal Mercury II oxide, nitric acid
Mercury Acetylene, fulminic acid, ammonia

Methyl alcohol

Lead perchlorate, mercury II nitrate
Nitric acid Acetic acid, aniline, chromic acid, hydrocyanic acid, hydrogen sulfide, flammable liquids, flammable gases, powdered magnesium metal, phosphorus, phthalic acid
Oxalic acid Silver, mercury
Perchloric acid Acetic anhydride, aluminum, Bakelite, bismuth and its alloys, alcohol, paper, wood, plastics, nylon (polyamide), modacrylic ester (35-85% acrylonitirile), polyester, Lucite, cellulose-based lacquers, metals, copper and copper alloys, high-nickel alloys, cotton, wool, glycerin-lead oxide
Phosphorus Mercury II oxide
Potassium bromide Carbon tetrachloride, carbon dioxide, water, nickel II bromide
Potassium permanganate Glycerin, ethylene glycol, benzaldehyde, sulfuric acid





Acetylene, oxalic acid, tartaric acid, ammonium compounds
Sodium Carbon tetrachloride, carbon dioxide, water
Sodium peroxide Ethyl or methyl alcohol, glacial acetic acid, acetic anhydride, benzaldehyde, carbon disulfide, glycerin, ethylene glycol, ethyl acetate, methyl acetate, furfural
Sulfuric acid Potassium chlorate, potassium perchlorate, potassium permanganate (or compounds with similar light metals, such as sodium, lithium, etc.)

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