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Merck
CN

110043

Acetic anhydride

≥99%

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
EC Number:
203-564-8
UNSPSC Code:
12352100
PubChem Substance ID:
24846953
Beilstein/REAXYS Number:
385737
MDL number:
MFCD00008705

Key Documents

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InChI key

WFDIJRYMOXRFFG-UHFFFAOYSA-N

InChI

1S/C4H6O3/c1-3(5)7-4(2)6/h1-2H3

SMILES string

CC(=O)OC(C)=O

vapor density

3.5 (vs air)

vapor pressure

10 mmHg ( 36 °C), 4 mmHg ( 20 °C)

assay

≥99%

autoignition temp.

629 °F

expl. lim.

10.3 %

availability

available only in EU

refractive index

n20/D 1.390 (lit.)

bp

138-140 °C (lit.)

mp

−73 °C (lit.)

solubility

water: slightly soluble

density

1.08 g/mL (lit.)

Quality Level

100

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signalword

Danger

Hazard Classifications

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

supp_hazards

EUH071

Storage Class

3 - Flammable liquids

wgk

WGK 1

flash_point_f

120.2 °F - closed cup

flash_point_c

49 °C - closed cup

ppe

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

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
STBF4846V
STBF7909V
STBF6257V
STBF4845V
STBF3172V

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