Factory Supply Benzoic anhydride powder CAS 93-97-0 Raw Materials

MF:C14H10O3

MW:226.23

EINECS:202-291-1

Specification:Benzoic anhydride powder

Sample:Benzoic anhydride powder

Brand: Benzoic anhydride powder

Appearance: White powder

Storage: Cool Dry Place

Brand: Globalchemical

Shelf Life: 2 Years

Test Method: HPLC

Uses and synthesis of Benzoic anhydride powder

Benzoic anhydride Raw Materials White prismatic crystal. Soluble in alcohol, ether; chloroform; propanol; icarbonic acid; benzene; almost insoluble in water. Stable to water and cold alkali, can be hydrolyzed by boiling alkali metal carbonates and caustic alkali.

Benzoic anhydride Raw Materials is the acid anhydride of benzoic acid. It is the simplest symmetrical aromatic acid anhydride. powdercan be produced by dehydrating benzoic acid. 

Benzoic anhydride CAS 93-97-0 provides a convenient way to prepare benzoic esters, which are more stable to hydrolysis than acetic esters and thus CAS 93-97-0 provides a convenient way to prepare benzoic esters which are more stable to hydrolysis than acetic esters and thus efficient at protecting alcohol function groups in a molecule.

Applications / Functions of Benzoic anhydride powder

Benzoic anhydride CAS 93-97-0 is used in pharmaceuticals, dyestuffs, preservatives, benzoylating agents, softening agents. It can also be used for water analysis.

Benzoic anhydride powder is used as benzoylating agent in the manufacture of drugs, dyes, preservatives, and as additive and softening agent for some polymers.

Physicochemical Property of Benzoic anhydride powder

Benzoic anhydride Raw Materials is also known as phthalic anhydride. Molecular formula C14H10O3, molecular weight 226.24, colorless to white orthorhombic biconical prismatic crystals precipitated from a mixed solution of benzene and petroleum ether, melting point 43°C, boiling point 360°C, 218°C (2.67kPa), 180°C (0.67kPa), relative density 1.1989 (15/4°C), refractive index 1.5767 (15°C), UV λλm in petroleum ether. UVλmax238,277nm in petroleum ether.Benzoic anhydride Raw Materials is soluble in alcohol, ether, chloroform, propanol, icodehydric acid, benzene; almost insoluble in water.Benzoic anhydride powder is stable in cold water and cold alkaline aqueous solution, can be hydrolyzed by boiling alkali metal carbonate and caustic alkali to It can be hydrolyzed to benzoic acid by boiling alkali metal carbonate and caustic alkali, react with ammonia or amine to form benzamide, act with alcohol to form benzoic acid ester, and can be reduced to benzyl alcohol by LiAlH4.

production methodprocess of Benzoic anhydride powder

Benzoic anhydride CAS 93-97-0 is obtained by the reaction of benzoic acid and ethyl anhydride. Benzoic acid, ethanoic anhydride and syrupy phosphoric acid are distilled together at a temperature not exceeding 120°C. When a certain amount of fraction is evaporated, ethanoic anhydride is added to the reaction mixture and the operation is repeated. The fractions were then distilled until the temperature of the reactants reached 270°C. The distillation residue was fractionated under reduced pressure, at a pressure of 2.53-2.67 kPa, the 210-220 ℃ fractions were collected as the crude benzoic anhydride, and Benzoic anhydride CAS 93-97-0 was obtained by recrystallization.