Benzoyl chloride CAS 98-88-4

Benzoyl chloride, colorless liquid, has a pungent odor. Soluble in benzene. It gradually decomposes when exposed to water or ethanol to form benzoic acid or ethyl benzoate and hydrogen chloride. Benzoyl chloride is an important intermediate in the preparation of dyes, fragrances, organic peroxides, pharmaceuticals and resins. Benzoyl chloride is also used in photography and in the production of artificial tannic acid, and has also been used as an irritant gas in chemical warfare.

Chemical formula: C7H5ClO

Molecular weight: 140.57

CAS accession number: 98-88-4

EINECS accession number: 202-710-8

Melting point: -1°C

Boiling point: 197°C

Water solubility: soluble in benzene and carbon disulfide  

Density: 1.22

Appearance: colorless smoke liquid with pungent odor 

Flash point: 72.2°C

Applications: Used in photography and in the production of artificial tannic acid, as an irritating gas in chemical warfare.

Benzoyl chloride is used as an organic synthesis, dye, and pharmaceutical raw material. In addition, benzoic acid can also produce benzoic anhydride by reacting with benzoyl chloride, which is mainly used as an acylating agent, and can also be used as a component of bleach and flux, and can also be used to prepare benzoyl peroxide.

Operation precautions: closed operation, local exhaust. The operation should be mechanized and automated as much as possible. Operators must undergo special training and strictly abide by the operating procedures. It is recommended that operators wear self-priming filter gas masks (full face shields), rubber acid-alkali resistant clothing, and rubber acid-alkali resistant gloves. Stay away from fire and heat sources, and smoke is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Avoid smoke. Prevent smoke and vapor from being released into the workplace air. Avoid contact with oxidants, alkalis, and alcohols. Pay special attention to avoid contact with water. Operate and dispose of in nitrogen. Load and unload lightly during handling to prevent damage to packaging and containers. Equipped with corresponding types and quantities of fire-fighting equipment and leakage emergency treatment equipment. Emptyed containers may contain harmful substances.

Storage precautions: Store in a cool, dry and well-ventilated warehouse. Keep away from fire and heat sources. The storage temperature should not exceed 25°C and the relative humidity should not exceed 75%. Keep the container sealed. It should be stored separately from oxidants, alkalis, alcohols, and edible chemicals, and should not be mixed with storage. Equipped with corresponding types and quantities of fire-fighting equipment. The storage area should be equipped with leakage emergency treatment equipment and suitable containment materials. The “five pairs” management system for extremely toxic substances should be strictly implemented.