Benzoyl chloride #CAS98-88-4

Benzoyl chloride #CAS98-88-4

Benzoyl chloride is a colorless to slightbrown liquid with a strong, penetrating odor. Molecularweight = 140.57;Boiling point = 197.2℃ at 760 mmHg;Freezing/Melting point= 2 1℃; Flash point = 72℃;Vapor pressure =0.38 mmHg at 20℃; Autoignitiontemperature=197℃. Explosive limits in air:Lower=2.5%; Upper=27%.Hazard Identification(based on NFPA-704 M Rating System): Health 3,Flammability 2, Reactivity 2 (water reactive).Decomposes in water.

The pure product of benzoyl chloride is a colorless and transparent flammable liquid, which is smoking exposed to air in the air. In Industry, it is slightly pale yellow, with a strong pungent odor. Its steam has a strong stimulating effect on eye mucous membranes, skin, and respiratory tract, by stimulating the mucous membranes and eyes tear. Its melting point is-1.0 ℃, boiling point is 197.2 ℃, relative density is 1.212 (20 ℃), flash point is 72 ℃, and refractive index (n20) is 1.554. It is soluble in ether, chloroform, benzene, and carbon disulfide. It can gradually be decomposed in water or ethanol, ammonia, which generates benzoic acid, benzamide, ethyl benzoate, and hydrogen chloride. In the laboratory, it can be obtained by distillation of benzoic acid and phosphorus pentachloride under anhydrous conditions. The industrial production process can be obtained by the use of thionyl chloride benzaldehyde. Benzoyl chloride is an important intermediate for preparing dyes, perfumes, organic peroxides, resins, and drugs. It is also used in photography and artificial tannin production, which was formerly used as an irritant gas in chemical warfare.

Benzoyl chloride is a colorless to slight brown liquid with a strong, penetrating odor; vapor causes tears. Soluble in ether and carbon disulfide; decomposes in water. Combustible. It is a liquid acyl chloride used as a benzoylating agent.

May form explosive mixture with air. Contact with heat, hot surfaces, and flames causes decomposition, forming phosgene and hydrogen chloride. Water contact may be violent; forms hydrochloric acid. Reactions with amines, alcohols, alkali metals, dimethyl sulfoxide, strong oxidizers, and metal salts may be violent, causing fire and explosions. Attacks metals in the presence of moisture, forming explosive hydrogen gas. Attacks some plastics, rubber or coatings.

Application Of Benzoyl chloride 

Benzoyl chloride could used as a raw material in organic synthesis, dye, and pharmaceuticals. It can also used as a manufacturing initiator for benzoyl peroxide, t-butyl peroxybenzoate, pesticides, and herbicides. In pesticides, it is a new insecticide that is inducible isoxazole parathion (Isoxathion, Karphos) intermediate. Benzoyl chloride is an important benzoyl and benzyl reagent. Most benzoyl chloride is used in the production of benzoyl peroxide, and secondly for the production of benzophenone, benzyl benzoate, and benzyl cellulose. Benzoyl peroxide catalyzes polymerization initiator for the monomer plastic, polyester, epoxy, acrylic resin production, self-curing agent, which is a glass fiber material, fluorine rubber, silicone crosslinking agents, oil refined, bleached flour, and fiber decolorizing.

For acylation, i.e., introduction of the benzoyl group into alcohols, phenols, and amines (Schotten-Baumann reaction); in the manufacture of benzoyl peroxide and of dye intermediates. In organic analysis for making benzoyl derivatives for identification purposes.

Benzoyl chloride is widely utilized for the synthesis of peroxides. It is employed in the production of dyes and perfumes. It also serves in the manufacturing of pharmaceuticals and resins.

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