33085

Acetic anhydride

• Wzór liniowy: (CH₃CO)₂O
• Numer CAS: 108-24-7
• Masa cząsteczkowa: 102.09
• EC Number: 203-564-8
• UNSPSC Code: 41116105
• PubChem Substance ID: 329754454
• Beilstein/REAXYS Number: 385737
• MDL number: MFCD00008705

Właściwości

• grade: derivatization grade ((GC derivatization))
• vapor density: 3.5 (vs air)
• vapor pressure: 10 mmHg ( 36 °C), 4 mmHg ( 20 °C)
• autoignition temp.: 629 °F
• expl. lim.: 10.3 %
• packaging: pkg of 10 × 2 mL
• 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.)
• SMILES string: CC(=O)OC(C)=O
• InChI: 1S/C4H6O3/c1-3(5)7-4(2)6/h1-2H3
• InChI key: WFDIJRYMOXRFFG-UHFFFAOYSA-N

Opis

General description

Acetic anhydride (CH₃CO)₂O, also known as ethanoric anhydride, is a colorless liquid with a strong pungent odor. It has a boiling point of 140°C (284°F). It is soluble in cold water, decomposes in hot water to form acetic acid, and is soluble in alcohol, chloroform and ether. It is a highly corrosive flammable liquid with harmful vapour. Exposure to acetic anhydride can occur via eye or skin contact, ingestion and inhalation.

Application

Suitable for the derivatization of acetaminophen, alcohols, amines, amino acids, arginyl peptides, aryl sulfate esters, carbamates, cerebrosides, cystine and cysteine (in peptides), desmethyldoxepin, 3,4-dihydroxyphenylglycol, hydroxamic acids, hydroxyamines, n-hydroxycarbamates, 4-methoxy and 3,4-dimethoxyphenethylamine, nucleosides bases and sugars, peptides, phenolalkylamines, phenylethylamines, phenylthiohydantoin amino acid, serotonin, and tryptamines.

Other Notes

Reagent for acetyl, o-acetyl, N-acetyl-N, permethyl acetyl, aryl acetate, β-carboline, methyl ester, acetyl or trifluoroacetyl phenylthihydantoins, n-trifluoroacetyl, bis-trimethylsilyl, trimethylsilyl polyamino alcohol, and O-trimethylsilyl (TMS).

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Informacja o środkach bezpieczeństwa

• pictograms: GHS02,GHS06,GHS05
• signalword: Danger
• hcodes: H226,H302,H314,H330
• pcodes: 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
• Klasa składowania: 3 - Flammable liquids
• wgk: WGK 1
• flash_point_f: 120.2 °F - closed cup
• flash_point_c: 49 °C - closed cup
• ppe: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter