91204
Acetic anhydride
for GC derivatization, LiChropur™, ≥99.0%
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About This Item
Fórmula lineal:
(CH3CO)2O
Número de CAS:
Peso molecular:
102.09
Beilstein:
385737
Número CE:
Número MDL:
Código UNSPSC:
12000000
ID de la sustancia en PubChem:
NACRES:
NA.22
Productos recomendados
grado
derivatization grade ((GC derivatization))
for GC derivatization
Nivel de calidad
densidad de vapor
3.5 (vs air)
presión de vapor
10 mmHg ( 36 °C)
4 mmHg ( 20 °C)
Ensayo
≥99.0% (GC)
≥99.0%
Formulario
liquid
temp. de autoignición
629 °F
calidad
LiChropur™
lim. expl.
10.3 %
idoneidad de la reacción
reagent type: derivatization reagent
reaction type: Acylations
técnicas
gas chromatography (GC): suitable
residuo de evap.
≤0.003%
índice de refracción
n20/D 1.390 (lit.)
bp
138-140 °C (lit.)
mp
−73 °C (lit.)
solubilidad
H2O: slightly soluble
densidad
1.08 g/mL (lit.)
cadena SMILES
CC(=O)OC(C)=O
InChI
1S/C4H6O3/c1-3(5)7-4(2)6/h1-2H3
Clave InChI
WFDIJRYMOXRFFG-UHFFFAOYSA-N
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Descripción general
Acetic anhydride is an esterification agent which is corrosive to metals. It is a colourless liquid with strong vinegar-like odour. It is mostly used in making plastics, fibers, pharmaceuticals, dyes and explosives.
Acylation, an alternative to silylation, enables the conversion of compounds that comprise of active hydrogens (-OH, -SH and -NH) into esters, thioesters, and amides by the action of a carboxylic acid or derivative. The carbonyl group adjacent to the halogenated carbons favors the improvement of electron capture detector (ECD) response. Acylation has several benefits:
Acetic anhydride is a reagent utilized to form fragmentation-directing derivatives for GC/MS analysis.
- It increases the stability of compounds by protecting unstable groups.
- It may render volatility on substances like carbohydrates or amino acids, that have several polar groups that they are non-volatile and generally decompose on heating.
- It allows the separations not possible with underivatized compounds.
- Compounds are detectable at very low levels with an ECD.
Acetic anhydride is a reagent utilized to form fragmentation-directing derivatives for GC/MS analysis.
Aplicación
Learn more in the Product Information
Suitable for the derivatization of acetyl, acetaminophen, alcohols, aldoses and partially methylated aldoses, aldosterone, amines, amino acids, amino sugars (in polysaccharides), amino sugar methyl glycosides, 2-amino-2-deoxyhexoses, arginyl peptides, aryl sulfate esters, bile acids, carbamates, carbohydrates, cerebrosides, cystine and cysteine (in peptides), desmethyldoxepin, 3,4-dihydroxyphenylglycol, estrogens, glycitols, hexopyranosides, hexosamines, hydroxamic acids, hydroxyamines, n-hydroxycarbamates, hydroxy steroids, inositols, 4-methoxy and 3,4-dimethoxyphenethylamine, methyl ester, methyl(methyl O-methyl-a-D-glucopyranosid)uronates, nucleosides, nucleoside bases and sugars, partially methylated pentose and hexoes, peptides, phenolalkylamines, phenylethylamines, polysaccharide constituents, postaglandins A,B and E, serotonin, sialic acids, sugars, natural sugars and tryptamine.
Otras notas
Reagent for acetic anhydride, acetyl, n-acetyl, n-acetyl-n, o-acetyl, acetate, aldononitrile acetate, aminoglycitol acetate, aryl acetate, permethyl acetyl, methyl ester, trifluoroacetyl, bis-trimethylsilyl, trimethylsilyl polyamino alcohol, and O-trimethylsilyl (TMS).
Información legal
LiChropur is a trademark of Merck KGaA, Darmstadt, Germany
Palabra de señalización
Danger
Frases de peligro
Clasificaciones de peligro
Acute Tox. 2 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B
Código de clase de almacenamiento
3 - Flammable liquids
Clase de riesgo para el agua (WGK)
WGK 1
Punto de inflamabilidad (°F)
120.2 °F - closed cup
Punto de inflamabilidad (°C)
49 °C - closed cup
Equipo de protección personal
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
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