Acetic anhydride

Acetic anhydride Property

mp : -73.1 °C bp : 140 °C density : 1.087 vapor density : 3.5 (vs air) vapor pressure : 10 mm Hg ( 36 °C) refractive index : n20/D 1.390(lit.) Fp : 130 °F storage temp. : Store at RT. Water Solubility : REACTS Sensitive : Moisture Sensitive Merck : 14,56 BRN : 385737 Stability:: Stability Flammable. Incompatible with strong oxidizing agents, water, strong bases, alcohols. CAS DataBase Reference: 108-24-7(CAS DataBase Reference) NIST Chemistry Reference: Acetic acid anhydride(108-24-7) EPA Substance Registry System: Acetic acid, anhydride(108-24-7)

Safety

Hazard Codes : C,Xn,F,Xi Risk Statements : 11-20/21/22-37/38-41-34-20/21-10-20/22-19-40 Safety Statements : 26-39-45-36/37/39-33-16 RIDADR : UN 2924 3/PG 2 WGK Germany : 3 RTECS : AK1925000 F : 21 HazardClass : 8 PackingGroup : II HS Code : 29152400 Hazardous Substances Data: 108-24-7(Hazardous Substances Data)

Acetic anhydride Chemical Properties,Usage,Production

Chemical Properties Colorless liquid Usage Acetic anhydride is an important solvent and acetylation agent. It is used for the manufacture of acetylcellulose, acetylsalicylic acid, acetanilide, nitrofurane, sulfonamides, vitamin B6 etc. Product Data Sheet General Description A clear colorless liquid with a strong odor of vinegar. Flash point 129°F. Corrosive to metals and tissue. Density 9.0 lb /gal. Used to make fibers, plastics, pharmaceuticals, dyes, and explosives. Air & Water Reactions Flammable. Reacts violently with water to generate acetic acid . This reaction is heightened by the presence of mineral acids (nitric, perchloric, sulfuric acid, etc.) [Chem. Eng. News 25, 3458]. Reactivity Profile Acetic anhydride reacts violently on contact with water, steam, methanol, ethanol, glycerol and boric acid. Reaction with water is particularly dangerous in presence with mineral acids (e.g., nitric, perchloric, chromic, sulfuric acid) [Chem. Eng. News 25, 3458]. Potentially explosive reactions with oxidizing reagents such as barium peroxide, chromium trioxide, chromic acid, hypochlorous acid, nitric acid, perchloric acid, peroxyacetic acid, potassium permanganate, hydrogen peroxide. [Sax, 9th ed., 1996, p. 15]. Reacts violently with metal nitrates used as nitrating agents [Davey W. et al., Chem. & Ind., 1948, p. 814]. Health Hazard Liquid is volatile and causes little irritation on uncovered skin. However, causes severe burns when clothing is wet with the chemical or if it enters gloves or shoes. Causes skin and eye burns and irritation of respiratory tract. Nausea and vomiting may develop after exposure.

Acetic anhydride Preparation Products And Raw materials

Raw materials Acetyl ketene Triethyl phosphate olefine ketone Ethyl acetate Acetic acid glacial Ammonia ketene

Preparation Products (2R,3R)-2-Amino-3-methylpentanoic acid 2-cyano-N-methyl-N-[(methylamino)carbonyl]acetamide DL-THREO-2-ACETAMIDO-L-(4-NITROPHENYL)-L,3-PROPANEDIOL N-Acetyl-L-glutamine 1,3-Dimethyl-8-nitro-1H-purine-2,6(3H,9H)-dione ,97% Vitamin E O-ACETYLRICINOLEIC ACID METHYL ESTER N-Acetylmorpholine 2-ACETYLAMINO-5-BROMO-6-METHYLPYRIDINE Magnesium acetate 6-(ACETYLAMINO)-2-PYRIDINECARBOXYLIC ACID N-(2-METHOXY-4-NITROPHENYL)ACETAMIDE 1-BENZOTHIOPHENE-3-SULFONYL CHLORIDE 4-(METHOXYCARBONYL)NICOTINIC ACID 2,4,6-TRIHYDROXY-1,3-DIMETHYL BENZENE (6-BROMO-2-PYRIDINYL)-CARBAMIC ACID,1,1-DIMETHYLETHYL ESTER 2-Acetylamino-4-methylpyridine Antimony triacetate 6-Amino-1,3-dimethyl-1,2,3,4-tetrahydropyrimidine-2,4-dione 5-ALPHA-ANDROSTANE-ALPHA-NOR-2,17-DIONE 4-AMINO-2-(METHYLTHIO)PYRIMIDINE-5-CARBONITRILE CELLULOSE ACETATE water-proofing agent PF 2-ACETAMIDO-3-PICOLINE 2-Ethylbutyl acetate 4-Acetamido-2-chloropyridine 3,4-PYRIDINEDICARBOXIMIDE 7-(Acetylamino)-4-hydroxy-2-naphthalenesulfonic acid 2-[(Acetyloxy)methoxy]ethyl acetate FARNESOL 4-ACETAMIDO-3-NITROPYRIDINE 3-ACETYL-2,5-DIMETHYLFURAN 19-Nor-17-alpha-pregna-3,5-dien-20-yne-3,17-diol, diacetate 2-ACETAMIDO-5-PICOLINE methyl 2-cyano-3-ethoxyacrylate N-Hydroxysulfosuccinimide sodium salt N-(6-CHLORO-3-NITROPYRIDIN-2-YL)ACETAMIDE 3-(METHOXYCARBONYL)PYRIDINE-2-CARBOXYLIC ACID PYRIDINE-3,4-DICARBOXYLIC ANHYDRIDE D-alpha-Amino-beta-phenylpropionic acid

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