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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)

Quality Level

100

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH Annex XVII (Restriction List)

CAS No.

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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