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安全信息

8.22278

Sigma-Aldrich

Acetic anhydride

for synthesis

别名:

Acetic anhydride, Acetyl acetate, Acetyl oxide

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About This Item

线性分子式:
(CH3CO)2O
CAS号:
108-24-7
分子量:
102.09
MDL编号:
MFCD00008705
UNSPSC代码:
12352106
EC索引号:
203-564-8
NACRES:
NA.22

蒸汽压

4 hPa ( 20 °C)

质量水平

200

检测方案

≥98.0% (GC)

形式

liquid

自燃温度

330 °C

效能

630 mg/kg LD50, oral (Rat)
4320 mg/kg LD50, skin (Rabbit)

expl. lim.

2.0-10.2 % (v/v)

pH值（酸碱度）

3 (20 °C, 10 g/L in H2O)

mp

-73 °C

转变温度

flash point 49 °C

密度

1.08 g/cm3 at 20 °C

储存温度

2-30°C

InChI

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

InChI key

WFDIJRYMOXRFFG-UHFFFAOYSA-N

一般描述

Acetic anhydride is a widely used reagent in organic synthesis. The reagent is effective for acetylating alcohols, amines, and thiols. Additionally, it is used in various named reactions such as the Pummerer reaction, the Perkin reaction, the Polonovski reaction, the N-oxide reaction, and the Thiele reaction. Acetic anhydride is an effective reagent during oxidation of alcohols, dehydration, ether cleavage, enol acetate formation, and gem-diacetate formation.

应用

Acetic anhydride is used:
  • In the solvent free acylation of 2-methylfuran to 2-acetyl-5-methylfuran in presence of hydroxide fluorides catalyst.
  • As a catalyst in the synthesis of 3-arylideneisobenzofuran-1(3H)-one derivatives from phthalic anhydride and quinoline derivatives.
  • In the preparation of hyperbranched poly ethoxy siloxanes by condensation reaction with tetra ethoxy silane in presence of an organotitanium catalyst.

分析说明

Assay (GC, area%): ≥ 98.0 % (a/a)
Density (d 20 °C/ 4 °C): 1.080 - 1.082
Identity (IR): passes test

警示用语：

Danger

危险分类

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

储存分类代码

3 - Flammable liquids

WGK

WGK 1

闪点(°F)

120.2 °F - closed cup

闪点(°C)

49 °C - closed cup

法规信息

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访问文档库

Acetic Anhydride
Regina Zibuck
Encyclopedia of Reagents for Organic Synthesis, Second Edition (2001)
Inorganic hydroxide fluorides as solid catalysts for acylation of 2-methylfuran by acetic anhydride
Frouri F, et al.
Applied Catalysis. B, Environmental, 168, 515-523 (2015)
One-pot synthesis of hyperbranched polyethoxysiloxanes
Zhu X, et al.
Macromolecules, 39(5), 1701-1708 (2016)

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