APPENDIX C.  INCOMPATIBLE CHEMICALS

Incompatible chemicals are chemicals that can react violently with each other creating fires, explosions, or the release of toxic gases. These chemicals should always be handled, stored, and disposed of in a manner that ensures that they do not accidentally come in contact with each other.

Acids:  Bases, metals, cyanides, sulfides, selenides

Acetic Acid:  Chromic acid, nitric acid, hydroxyl compounds, ethylene glycol, perchloric acid, peroxides, permanganates

Acetylene:  Chlorine, bromine, copper, fluorine, silver, mercury, or their compounds

Acetone:  Concentrated sulfuric and nitric acid mixtures

Alkali & Alkaline Earth (carbides, hydrides, hydroxides, metals, oxides, peroxides):  Water, acids, halogenated organic compounds, carbon dioxide, halogens

Ammonia (anhydrous):  Mercury, chlorine, calcium hypochlorite, iodine, bromine, hydrofluoric acid (anhydrous)

Ammonium nitrate:  Acids, metal powders, flammable liquids, chlorates, nitrites, sulfur, finely divided organic or combustible materials

Aniline:  Nitric acid, hydrogen peroxide, strong oxidizing agents

Azides, inorganic:  acids, heavy metals and their salts, oxidizing agents

Bases:  Acids

Bromine:  Ammonia, acetylene, butadiene, butane (or other petroleum gases), hydrogen, sodium carbide, turpentine, benzene, finely divided metals

Calcium oxide:  Water

Carbon, activated:  Calcium hypochlorite, all oxidizing agents

Carbon tetrachloride:  Sodium

Chlorates:  Ammonium salts, acids, metal powders, sulfur, finely divided organic or combustible materials

Chromic acid:  Acetic acid, naphthalene, camphor, glycerol, flammable liquids

Chlorine:  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

Copper:  Acetylene, hydrogen peroxide

Cumene hydroperoxide:  Acids (organic or inorganic)

Cyanides, inorganic:  Acids, strong bases

Flammable liquids:  Ammonium nitrate, chromic acid, hydrogen peroxide, nitric acid, sodium peroxide, halogens, strong oxidizing agents

Fluorine:  Separate from everything

Hydrocarbons:  Fluorine, chlorine, bromine, chromic acid, sodium peroxide

Hydrocyanic acid:  Nitric acid, alkali

Hydrofluoric acid, anhydrous:  Ammonia (aqueous or anhydrous)

Hydrogen peroxide:  Copper, chromium, iron, most metals and their salts, alcohols, acetone, organic materials, aniline, nitromethane, flammable liquids, combustible materials

Hydrogen sulfide:  Fuming nitric acid, oxidizing gases

Hypochlorites:  Acids, activated carbon

Iodine:  Acetylene, hydrogen, ammonia

Mercury and its amalgams:  Acetylene, fulminic acid, ammonia, nitric acid, sodium azide

Nitrates:  Sulfuric acid

Nitric acid:  Acetic acid, aniline, bases, chromic acid, chromates, hydrocyanic acid, sulfides, sulfuric acid, carbon, flammable liquids, flammable gases, metals, permanganates, reducing agents

Nitrites, inorganic:  Acids, oxidizing agents

Nitro compounds, organic:  Strong bases

Nitroparaffins:  Inorganic bases, amines

Oxalic acid:  Silver and its salts, mercury and its salts

Oxidizing agents:  Reducing agents (e.g., alkaline metals, ammonia, carbon, metals, metal hydrides, nitrites, organic compounds, phosphorus, silicon, sulfur), flammable & combustible materials

Oxygen:  Oils, grease, hydrogen, flammable liquids, solids, and gases

Perchloric acid: Acetic anhydride, bismuth and its alloys, alcohol, paper, wood, other organic materials

Peroxides, organic:  Acids, friction, heat

Phosphorus pentoxide:  Water, alcohols, strong bases

Phosphorus, white:  Air, oxygen, alkalis, reducing agents

Potassium:  Carbon tetrachloride, carbon dioxide, water

Potassium chlorate & perchlorate:  Sulfuric and other acids

Potassium permanganate:  Glycerine, ethylene glycol, benzaldehyde, sulfuric acid

Reducing agents:  Oxidizing agents (e.g., bromates, chlorates, chromates, chromium trioxide, dichromates, halogens, hydrogen peroxide, hypochlorites, iodates, nitric acid, nitrates, perchlorates, peroxides, permangnates, persulfates)

Selenides:  Reducing agents

Silver:  Acetylene, oxalic acid, tartaric acid, ammonium compounds

Sodium:  Carbon tetrachloride, carbon dioxide, water

Sodium nitrite:  Ammonium nitrate, and other ammonium salts

Sodium peroxide:  Oxidizable substances such as: methanol, glacial acetic acid, acetic anhydride, benzaldehyde, carbon disulfide, glycerine, ethylene glycol, ethylacetate

Sulfides, inorganic:  Acids

Sulfuric acid:  Bases, chlorates, perchlorates, permanganates, water

Tellurides:  Reducing agents