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539996

Sigma-Aldrich

Acetic anhydride

99.5%

Fórmula linear:
(CH3CO)2O
Número CAS:
Peso molecular:
102.09
Beilstein:
385737
Número EC:
Número MDL:
ID de substância PubChem:
NACRES:
NA.21

Nível de qualidade

200

densidade de vapor

3.5 (vs air)

pressão de vapor

10 mmHg ( 36 °C)
4 mmHg ( 20 °C)

teor

99.5%

temperatura de autoignição

629 °F

Lim. expl.

10.3 %

índice de refração

n20/D 1.390 (lit.)

pb

138-140 °C (lit.)

pf

−73 °C (lit.)

solubilidade

water: slightly soluble

densidade

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

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Descrição geral

Acetic anhydride is a carboxylic acid anhydride commonly used for the acetylation of amines and alcohols. It undergoes exothermic reaction on addition of water to form acetic acid. The photodecomposition of acetic anhydride has been studied over the temperature range from 60-160°C. The impact of treating pine wood with acetic anhydride has been investigated to evaluate the toughness of pine wood.

Aplicação

Acetic anhydride has been used in the preparation of 6-dimethylamino-2,3-naphthalenedicarboxylic anhydride. It has also been used to generate acetate ions during high resolution chemical ionization mass spectrometry (CI-ToFMS) analysis.

Embalagem

1, 4 kg in glass bottle
25 g in glass bottle
18 kg in poly drum

Palavra indicadora

Danger

Classificações de perigo

Acute Tox. 2 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B

Perigos de suplementos

Código de classe de armazenamento

3 - Flammable liquids

WGK

WGK 1

Ponto de fulgor (ºF)

120.2 °F - closed cup

Ponto de fulgor (ºC)

49 °C - closed cup

Equipamento de proteção individual

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

Certificado de análise

Certificado de origem

Toughness of pine wood chemically modified with acetic anhydride.
Papadopoulos AN and Tountziarakis P.
European Journal of Wood and Wood Products, 70(1-3), 399-400 (2012)
Acetic Anhydride Hydrolysis at High Acetic Anhydride to Water Ratios.
Fritzler BC, et al.
International Journal of Chemical Kinetics, 46(3), 151-160 (2014)
Photolysis of Acetic Anhydride.
Burwasser H and Taylor HA.
J. Chem. Phys. , 23(12), 2295-2299 (1955)
Acetic anhydride as a synthetic reagent.
Kim DH.
Journal of Heterocyclic Chemistry, 13(2), 179-194 (1976)
Kishore Baathulaa et al.
Nature protocols, 6(12), 1990-1997 (2011-12-03)
Environment-sensitive fluorophores have different quantum yields in different solvents. 6-Dimethylaminonaphthalimide (6-DMN), for example, has a low quantum yield in aqueous solutions, but is highly fluorescent in nonpolar solvents or when bound to hydrophobic sites in proteins or membranes. 6-DMN has

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