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91204
Acetic anhydride
derivatization grade (GC derivatization), LiChropur™, ≥99.0%
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10 ML
CHF 46.80
25 ML
CHF 103.00
10 X 1 ML
CHF 240.00
Informazioni su questo articolo
Formula condensata:
(CH3CO)2O
Numero CAS:
Peso molecolare:
102.09
Beilstein:
385737
Numero CE:
Numero MDL:
Codice UNSPSC:
41115710
ID PubChem:
NACRES:
NA.22
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Servizio Tecnico
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Permettici di aiutartiGrado
derivatization grade (GC derivatization)
Livello qualitativo
Densità del vapore
3.5 (vs air)
Tensione di vapore
10 mmHg ( 36 °C)
4 mmHg ( 20 °C)
Saggio
≥99.0% (GC)
≥99.0%
Stato
liquid
Temp. autoaccensione
629 °F
Qualità
LiChropur™
Limite di esplosione
10.3 %
Impiego in reazioni chimiche
reagent type: derivatization reagent
reaction type: Acylations
tecniche
gas chromatography (GC): suitable
Residuo dopo evaporazione
≤0.003%
Indice di rifrazione
n20/D 1.390 (lit.)
P. ebollizione
138-140 °C (lit.)
Punto di fusione
−73 °C (lit.)
Solubilità
H2O: slightly soluble
Densità
1.08 g/mL (lit.)
Stringa SMILE
CC(=O)OC(C)=O
InChI
1S/C4H6O3/c1-3(5)7-4(2)6/h1-2H3
WFDIJRYMOXRFFG-UHFFFAOYSA-N
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Categorie correlate
1 of 4
Questo articolo | 33214-M | 320102 | 242845 |
|---|---|---|---|
| grade for GC derivatization | grade ACS reagent, puriss. p.a. | grade - | grade ACS reagent |
| assay ≥99.0% (GC) | assay ≥99% (GC) | assay ≥99% | assay ≥98.0% |
| Quality Level 100 | Quality Level 100 | Quality Level 200 | Quality Level 200 |
| form liquid | form - | form liquid | form liquid |
| solubility H2O: slightly soluble | solubility - | solubility water: slightly soluble | solubility H2O: slightly soluble |
| density 1.08 g/mL (lit.) | density 1.08 g/mL (lit.) | density 1.08 g/mL (lit.) | density 1.08 g/mL (lit.) |
Descrizione generale
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.
Applicazioni
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.
Altre note
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).
Note legali
LiChropur is a trademark of Merck KGaA, Darmstadt, Germany
Avvertenze
Danger
Indicazioni di pericolo
Classi di pericolo
Acute Tox. 2 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B
Codice della classe di stoccaggio
3 - Flammable liquids
Classe di pericolosità dell'acqua (WGK)
WGK 1
Punto d’infiammabilità (°F)
120.2 °F - closed cup
Punto d’infiammabilità (°C)
49 °C - closed cup
Dispositivi di protezione individuale
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
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