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Sigma-Aldrich

Acetic anhydride

Arxada quality, ≥99.5% (GC)

Synonym(s):

Acetanhydride, Acetic acid anhydride, Acetyl acetate, Acetyl anhydride, Ethanoic anhydride

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About This Item

Linear Formula:
(CH3CO)2O
CAS Number:
108-24-7
Molecular Weight:
102.09
Beilstein:
385737
EC Number:
203-564-8
MDL number:
MFCD00008705
UNSPSC Code:
12352106
PubChem Substance ID:
329761397
NACRES:
NA.22

vapor density

3.5 (vs air)

vapor pressure

10 mmHg ( 36 °C)
4 mmHg ( 20 °C)

Assay

≥99.5% (GC)

form

liquid

autoignition temp.

629 °F

quality

Arxada quality

expl. lim.

10.3 %

manufacturer/tradename

Arxada AG

impurities

≤0.5% acetic acid

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

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Analysis Note

KMnO4 test ≤40 mL (0.1% KMnO4 per 20 mL)

Signal Word

Danger

Hazard Statements

H226,H302,H314,H330

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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