242845

Acetic anhydride

ACS reagent, ≥98.0%

• 동의어(들): Acetanhydride, Acetic acid anhydride, Acetyl acetate, Acetyl anhydride, Ethanoic anhydride
• Linear Formula: (CH₃CO)₂O
• CAS Number: 108-24-7
• Molecular Weight: 102.09
• Beilstein: 385737
• EC Number: 203-564-8
• MDL number: MFCD00008705
• UNSPSC 코드: 12352100
• PubChem Substance ID: 24854587
• NACRES: NA.21

속성

• Grade: ACS reagent
• Quality Level: 200
• vapor density: 3.5 (vs air)
• vapor pressure: 10 mmHg ( 36 °C); 4 mmHg ( 20 °C)
• 분석: ≥98.0%
• 양식: liquid
• autoignition temp.: 629 °F
• expl. lim.: 10.3 %
• 불순물: MnO₄^- reducers, passes test
• 증발 잔류물: ≤0.003%
• refractive index: n20/D 1.390 (lit.)
• bp: 138-140 °C (lit.)
• mp: −73 °C (lit.)
• solubility: H₂O: slightly soluble
• density: 1.08 g/mL (lit.)
• 음이온 미량물: chloride (Cl^-): ≤5 ppm; phosphate (PO₄^3-): ≤0.001%; sulfate (SO₄^2-): ≤5 ppm
• 양이온 미량물: Fe: ≤5 ppm; heavy metals: ≤2 ppm
• 작용기: anhydride; ester
• SMILES string: CC(=O)OC(C)=O
• InChI: 1S/C4H6O3/c1-3(5)7-4(2)6/h1-2H3
• InChI key: WFDIJRYMOXRFFG-UHFFFAOYSA-N

설명

일반 설명

Acetic anhydride is an organic solvent. On dissolution in water it undergoes solvolysis to afford acetic acid. It is widely employed for the acetylation of various alcohols. Wacher process (starting reagent + a ketene) and Knapsack process (starting reagent = acetaldehyde) have been reported for the industrial preparation of acetic anhydride.[1]

애플리케이션

Acetic anhydride has been used as one of the reaction components in the preparation of:

• 2-acetylamino-5-aminobenzenesulfonic acid[2]
• 3,3′-bis(sulfonato)-4,4′-bis(chloroacetamido)azobenzene (BSBCA)[3]
• 10-acetoxy-9-nitro-octadecanoic acid, allyl ester[4]
• 9-nitro-oleic acid[4]

It may be used for acetylation of anisole over HBEA zeolite in a batch reactor.[2]

안전성 정보

• 픽토그램: GHS02,GHS06,GHS05
• 신호어: Danger
• 유해 및 위험 성명서: H226,H302,H314,H330
• 예방조치 성명서: P210 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 2 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 1
• Flash Point (°F): 120.2 °F - closed cup
• Flash Point (°C): 49 °C - closed cup
• 개인 보호 장비: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter