Examples of incompatible chemicals are listed below. The material
on the left should be stored and handled so that it does not contact
the incompatible chemical(s) on the right. Contact with incompatible
chemicals would result in a potential violent reaction or toxic
reaction products.
| Acetic acid | Chromic acid, nitric acid, hydroxyl compounds, ethylene glycol, perchloric acid, peroxides, permanganates | Hydrogen peroxide | Copper, chromium, iron, most metals or their salts, alcohols, acetone, organic materials, aniline, nitromethane, combustible materials |
| Acetylene | Chlorine, bromine, copper, fluorine, silver, mercury | Hydrogen sulfide | Fuming nitric acid, oxidizing gases |
| Accetone | Concentrated nitric and sulfuric acid mixtures | Hypochlorites | Acids, activated carbon |
| Alkali and alkaline earth metals (such as powdered aluminum or magnesium, calcium, lithium, sodium, potassium) | Water, carbon tetrachloride or other chlorinated hydrocarbons, carbon dioxide, halogens | Iodine | Acetylene, ammonia (aqueous or anhydrous), hydrogen |
| Ammonia (anhydrous) | Mercury, chlorine, calcium hypochlorite, iodine, bromine, hydrofluoric acid (anhydrous) | Mercury | Acetylene, fulminic acid, ammonia |
| Ammonium nitrate | Acids, powdered metals, flammable liquids, chlorates, nitrates, sulfur, finely divided organic or combustible materials | Nitrates | Sulfuric acid |
| Aniline | Nitric acid, hydrogen peroxide | Nitric Acid (concentrated) | Acetic acid, aniline, chromic acid, hydrogen sulfide, flammable liquids, flammable gases, copper, brass, any heavy metals |
| Arsenical materials | Any reducing agent | Nitrites | Acids |
| Azides | Acids | Nitroparaffins | Inorganic bases, amines |
| Bromine | See Chlorine | Oxalic acid | Silver, mercury |
| Calcium Oxide | Water | Oxygen | Oils, grease, gydrogen, flammable liquids, solids, or gases |
| Carbon (activated) | Calcium hypochlorite, all oxidizing agents | Perchloric acid | Acetic anhydride, bismuth and its alloys, alcohol, paper, wood, grease, oils |
| Carbon tetrachloride | Sodium | Peroxide, organic | Acids (organic or mineral), avoid friction, store cold |
| Chlorates | Ammonium salts, acids, powdered metals, sulfur, finely divided organic or combustible materials | Phosphorus (white) | Air, oxygen, alkalis, reducing agents |
| Chromic acid and chromium trioxide | Acetic acid, naphthalene, camphor, glycerol, alcohol, flammable liquids in general | Potassium | Carbon tetrachloride, carbon dioxide, water |
| Chlorine | Ammonia, acetylene, butadiene, butane, methane, propane (or other petroleum gases), hydrogen, sodium carbide, benzene, finely divided metals, turpentine | Potassium chlorate | Sulfuric and other acids |
| Chlorine dioxide | Ammonia, methane, phosphine, hydrogen sulfide | Potassium perchlorate (see also chlorates) | Sulfuric and other acids |
| Copper | Acetylene, hydrogen peroxide | Potassium permanganate | Glycerol, ethylene glycol, benzaldehyde, sulfuric acid |
| Cumene hydroperoxide | Acids (organic or inorganic) | Selenides | Reducing agents |
| Cyanides | Acids | Silver | Acetylene, oxalic acid, tartartic acid, ammonium compounds, fulminic acid |
| Flammable liquids | Ammonium nitrate, chromic acid, hydrogen peroxide, nitric acid, sodium peroxide, halogens | Sodium | Carbon tetrachloride, carbon dioxide, water |
| Fluorine | Everything | Sodium nitrate | Ammonium nitrate and other ammonium salts |
| Hydrocarbons (such as butane, propane, benzene) | Fluorine, chlorine, bromine, chronic acid, socium peroxide | Sodium peroxide | Ethyl or methyl alcohol, glacial acetic acid, acetic anhydrite, benzaldehyde, carbon disulfide, glycerin, ethylene glycol, ethyl acetate, methyl acetate, furfural |
| Hydrocyanic acid | Nitric acid, alkali | Sulfides | Acids |
| Hydrofluoric acid (anhydrous) | Ammonia (aqueous or anhydrous) | Sulfuric acid | Potassium chlorate, potassium perchlorate, potassium permanaganate (similar compounds of light metals, such as sodium, lithium) |
| Telurides | Reducing agents |