[Alias]B Anhydride, acetic acidanhydride.
［Molecular formula]C4H6O 3
［性Quality]It is two acetic acidsmoleculeLose a moisture子After ShrinkCompound:
Acetic acidAnhydrideis colorless YiWai发 Liquidbody,ToolsYesStrongStrong pungent odor and corrosiveness. Relative densityDegree1.0820, boiling point 138.63℃,Melting point-74.13℃,viscosity0.91 mpa·s（20℃）, refractionrate 1.390( 20℃ ), sinceRandian388 .9℃. Soluble in benzene, ethanol, chloroform and acetateether中. It decomposes when exposed to water to generate acetic acid.
[Use of acetic anhydride] Is an important organic chemical raw material. YesManufacturing acetate fiberB Acylating agent is used in medicine to manufacture aspirin, zygomycin, and dibaazoleetc. drugs. Also usedforManufacture of synthetic dyes、香Materials, pesticides, etc.,It can also be used as a dehydrating agent, polyethylene合initiators, etc..
[Brief preparation method]
①toBAcid is used as raw material, and it is processed at high temperatureemptyCatalytic cracking under Generate ketene,ReUse BAcid is absorbed to produce acetic acidanhydride.
②Peracetic acid is generated from the oxidation of acetaldehyde,ReCombine peracetic acid and acetaldehyde to generate acetic acid Anhydride.
[Security and Protection]BAcidAcid is a second-level organic acid corrosive substance and is dangerous Regulation number：940 0l. Packed in aluminum alloy or plastic barrels, aluminumBarrel Net weight per barrel100kg、200kg、Plastic barrelEveryBarrel25L. When storing, pay attention to fire and explosion protection.
Low-concentration acetic acid is non-toxic, and the concentration exceeds5% has a strong effect on the skin Corrosive pairStrong irritation to the respiratory tract, esophagus, eyes, etc. When in contact with skinshouldImmediately use plenty of water or2% baking soda solutionQingWash.
Microsoft Yahei;letter-spacing: 0;font-size: 14px”>It is a second-level organic acidic corrosive substance, hazardous regulation number：940 0l.Packed in aluminum alloy or plastic barrels, aluminumBarrelNet weight per barrel100kg、200 span>kg, Plastic barrelEveryBucket25L. When storing, pay attention to fire and explosion protection.
Low-concentration acetic acid is non-toxic, and the concentration exceeds5% has a strong effect on the skin Corrosive pairStrong irritation to the respiratory tract, esophagus, eyes, etc. When in contact with skinshouldImmediately use plenty of water or2% baking soda solutionQingWash.
