INCOMPATIBLE CHEMICALS

The information on this web page is from AS 2243.10-2004 Safety in Laboratories - Part 10 Storage of chemicals and the CCH Laboratory Safety Manual, courtesy of CCH Australia Ltd.

The substances listed below may react violently when mixed with other chemicals and must be kept apart. The list is a summary of important examples taken from the range of hazardous chemicals. For a complete reference to incompatibility of chemicals refer to laboratory safety publications.

Chemical Not compatible with
Acetic acid Chromium (VI) oxide, nitric acid, alcohols, ethylene glycol, perchloric acid, peroxides, permanganates.
Acetylene Chlorine, bromine, fluorine, copper, silver, mercury.
Activated charcoal Calcium hypochlorite, oxidising agents.
Alkali metals Water, carbon tetrachloride and other halogenated alkanes, carbon dioxide, halogens.
Aluminium alkyls Water.
Ammonia, laboratory gas Mercury (eg in pressure gauges), chlorine, calcium hypochlorite, iodine, bromine, hydrogen fluoride.
Ammmonium nitrate Acids, powdered metals, flammable liquids, chlorates, nitrates, sulphur, fine particulate organic or combustible material.
Analine Nitric acid, hydrogen peroxide.
Bromine See chlorine.
Chlorates Ammonium salts, acids, powdered metals, sulphur, fine particulate organic or combustible material.
Chlorine Ammonia, acetylene, butadiene, butane, methane, propane, hydrogen, petroleum benzine, benzene, powdered metals.
Chomium (VI) oxide Acetic acid, naphthalene, camphor, glycerol, petroleum spirit, alcohols, flammable liquids.
Copper Acetylene, hydrogen peroxide.
Cumene hydro-peroxide Acids, both organic and inorganic.
Cyanides Acids.
Flammable liquids Ammonium nitrate, chrominium (VI) oxide, hydrogen peroxide, nitric acid, sodium peroxide.
Fluorine Store separately.
Hydro-carbons Fluorine, chlorine, bromine, chromiun (VI) oxide, sodium peroxide.
Hydrogen Fluoride Ammonia, laboratory gas or liquid.
Hydrogen peroxide Copper, chromium, iron, metals and metal salts, alcohols, acetone, organic substances, analine, nitromethane, combustible substances.
Hydrogen sulphide Fuming nitric acid, oxidising gases.
Iodine Acetylene, ammonia (laboratory gas or solution).
Mercury Acetylene, ammonia.
Nitric acid, conc Acetic acid, analine, chromium (VI) oxide, prussic acid, hydrogen sulphide, flammable liquids and gases.
Oxalic acid Silver, mercury.
Perchloric acid Acetic anhydride, bismuth and its alloys, alcohols, paper and wood.
Phosphorus Sulphur, oxygen containing compounds such as chlorates.
Potassium See alkali metals.
Potassium chlorate See chlorates.
Potassium Permanganate Glycerol, ethylene glycol, benzaldehyde, sulphuric acid.
Silver Acetylene, oxalic acid, tartaric acid, ammonium compounds.
Sodium See alkali metals.
Sodium peroxide Methanol, ethanol, glacial acetic acid, acetic anhydride, benzaldehyde, carbon disulphide, glycerol, ethylene glycol, ethyl and methyl acetate, furfurol.
Sulphuric acid Potassium chlorate, potassium perchlorate, potassium permanganate.