List of Incompatible Chemicals

Incompatible chemicals are two or more compounds that cannot be combined because they will react and generate unsafe or hazardous circumstances. Incompatible chemical reactions can result in flames, explosions, poisonous gases, or other risks that can hurt people or damage equipment. Understanding which chemicals are incompatible with one another is critical for maintaining a safe workplace, preventing accidents, and assuring correct chemical handling, storage, and disposal.

Here are some of the factors that can cause chemicals to be incompatible with each other:

1. Chemical reactions: Some substances can react with one another, resulting in potentially harmful reactions. Acids and bases, for example, can react to generate heat, hazardous fumes, or explosions. Oxidizers can create flames when they react with flammable materials.
2. Incompatibility: Some compounds may have physical features that make them incompatible with others. Some compounds, for example, may be incompatible due to differences in density, boiling temperature, or solubility. When these compounds are mixed, they can separate, precipitate, or change phase, which can lead to dangerous circumstances.
3. Temperature sensitivity: Some substances are temperature sensitive and can degrade or react when exposed to high or low temperatures. Some compounds, for example, degrade when exposed to heat or light, whilst others become unstable when exposed to low temperatures.
4. Shock or friction sensitivity: Some compounds are sensitive to shock or friction and can detonate when exposed to these conditions. Some chemicals, for example, can explode when dropped, struck, or come into touch with other objects.
5. Container incompatibility: Some chemicals may be incompatible with specific storage containers or materials. Some chemicals, for example, can corrode or dissolve plastic containers, whilst others may react with metal containers.

To minimize mishaps and maintain a safe workplace, it is critical to correctly identify and label incompatible chemicals, store them separately, and avoid mixing them together. It is also critical to use proper safety precautions while handling, storing, and disposing of incompatible substances. Finally, it is critical to stay current on safety legislation, training, and best practices for chemical handling in the workplace.

CHEMICAL	TO BE KEPT OUT OF CONTACT WITH
Acetic acid	Chromic acid, Nitric acid, Hydroxyl compounds, ethylene, Glycol, Perchloric acid, Peroxides, and Permanganates.
Acetylene	Chlorine, Bromine, Copper, Fluorine, Silver, Mercury
Metals (powdered aluminum, Magnesium, Sodium or Potassium)	Carbon Tetrachloride or other chlorinated Hydrocarbons, Carbon dioxide, and Halogens.
Ammonia	Mercury (in Manometers for instance) Chlorine, Iodine, Bromine, Hydrofluoric acid (G)
Ammonium Nitrate	Acids, Metal Powders, Flammable Liquids, Chlorates, Nitrates, Finely divided organic or combustible materials.
Aniline	Nitric acid, hydrogen peroxide
Bromine	Ammonia, Acetylene, Benzene, Finely divided metals
Chromic Acid	Acetic acid, Glycerin, Alcohol, Methanol, and Flammable Liquids in general.
Hydrogen peroxide	Copper, Chromium, Iron, Most metals and their Salts, Alcohol, Acetone, Organic materials, Aniline, Flammable liquids, and Combustible materials.
Iodine	Acetylene, Ammonia (Aqueous and Gas) Hydrogen
Mercury	Acetylene, Ammonia
Cons. Nitric acid	Acetic acid, Aniline, Chromic acid, flammable liquids and gases
Oxalic acid	Mercury
Perchloric acid	Acetic anhydride, alcohol, paper, wood.
Potassium permanganate	Glycerin, Ethylene Glycol, Benzaldehyde, Sulphuric acid
Sodium	Water, carbon tetrachloride, carbon dioxide
Sulphuric acid	Potassium permanganate and compounds of similar light metals such as sodium

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Oxidizing

Substances that give rise to highly exothermic reactions in contact with other substances, particularly flammable substances.

Flammable

Extremely flammable liquids have a flash point less than 0C and a boiling point less than or equal to 35°C.

Harmful and irritant

Substances that present moderate risks to health by inhalation, ingestion or skin absorption, inhalation, ingestion or skin absorption.  Substances that are non-corrosive but are liable to cause inflammation through immediate prolonged or repeated contact with the skin or mucous membranes.

Explosive

Substances that may explode under the effect of flame or heat or which are more sensitive to the shock of friction than dinitrobenzene. 

Toxic

Substances that present a serious risk of acute or chronic poisoning by inhalation ingestion or skin absorption.

Corrosive

Substances that destroy living tissue

Dangerous to the environment

The substance that, were they to enter into an environment, would present or might present an immediate or delayed danger for one or more components of the environment.

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