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安全信息

33214

Sigma-Aldrich

乙酸酐

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99% (GC)

别名:

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

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About This Item

线性分子式:
(CH3CO)2O
CAS号:
108-24-7
分子量:
102.09
Beilstein:
385737
EC 号:
203-564-8
MDL编号:
MFCD00008705
UNSPSC代码:
12352100
PubChem化学物质编号:
329754473
NACRES:
NA.21

等级

ACS reagent
puriss. p.a.

质量水平

200

Agency

USP/NF
reag. ISO
reag. Ph. Eur.

蒸汽密度

3.5 (vs air)

蒸汽压

10 mmHg ( 36 °C)
4 mmHg ( 20 °C)

方案

≥99% (GC)

自燃温度

629 °F

expl. lim.

10.3 %

杂质

≤0.003% non-volatile matter
≤0.01% KMnO4 red. matter (as O)

折射率

n20/D 1.390 (lit.)

沸点

138-140 °C (lit.)

mp

−73 °C (lit.)

密度

1.08 g/mL (lit.)

痕量阴离子

chloride (Cl-): ≤2 mg/kg
phosphate (PO43-): ≤10 mg/kg
sulfate (SO42-): ≤5 mg/kg

痕量阳离子

Al: ≤0.5 mg/kg
B: ≤0.02 mg/kg
Ba: ≤0.1 mg/kg
Ca: ≤0.5 mg/kg
Cd: ≤0.05 mg/kg
Co: ≤0.02 mg/kg
Cr: ≤0.05 mg/kg
Cu: ≤0.02 mg/kg
Fe: ≤0.1 mg/kg
Mg: ≤0.1 mg/kg
Mn: ≤0.02 mg/kg
Ni: ≤0.02 mg/kg
Pb: ≤0.1 mg/kg
Sn: ≤0.1 mg/kg
Zn: ≤0.2 mg/kg

适用性

passes test for reaction against H2SO4

SMILES字符串

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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相关类别

一般描述

Acetic anhydride is a colorless liquid. On dissolution in water, it undergoes solvolysis to afford acetic acid. It is widely employed as acetylation reagent for the acetylation of various alcohols. Wacher process (starting reagent + a ketene) and Knapsack process (starting reagent = acetaldehyde) have been reported for the industrial preparation of acetic anhydride. It is employed as solvent for various organic reactions.

应用

  • Modification of Quinoa Starches: Acetic anhydride is used to modify the structure of starch molecules, discussing its implications on improving bread quality and food processing (Wang et al., 2024).

其他说明

The article number 33214-4X2.5L will be discontinued. Please order the single bottle 33214-2.5L which is physically identical with the same exact specifications.
The article number 33214-4X2.5L-M will be discontinued. Please order the single bottle 33214-2.5L-M which is physically identical with the same exact specifications.
The article number 33214-6X1L will be discontinued. Please order the single bottle 33214-1L which is physically identical with the same exact specifications.
The article number 33214-6X1L-M will be discontinued. Please order the single bottle 33214-1L-M which is physically identical with the same exact specifications.

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

易制毒化学品（2类）
危险化学品

从最新的版本中选择一种：

分析证书(COA)

Lot/Batch Number
STBL2316
STBL1800
STBL2879
STBK7406
STBK4998

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P Barath et al.
The American journal of pathology, 137(3), 503-509 (1990-09-01)
We used immunohistochemistry to detect tumor necrosis factor (TNF) and in situ hybridization to detect TNF messenger RNA (mRNA) in the intimal mesenchymal-appearing cells and in the medial smooth muscle cells of human atherosclerotic arteries. Medial smooth muscle cells showed
Acetylation of anisole by acetic anhydride over a HBEA zeolite-Origin of deactivation of the catalyst.
Rohan D, et al.
J. Catal., 177(2), 296-305 (1998)
David G Simmons et al.
BMC genomics, 9, 352-352 (2008-07-30)
The Prolactin (PRL) hormone gene family shows considerable variation among placental mammals. Whereas there is a single PRL gene in humans that is expressed by the pituitary, there are an additional 22 genes in mice including the placental lactogens (PL)
Francesca Morello et al.
Cell reports, 33(2), 108268-108268 (2020-10-15)
Tegmental nuclei in the ventral midbrain and anterior hindbrain control motivated behavior, mood, memory, and movement. These nuclei contain inhibitory GABAergic and excitatory glutamatergic neurons, whose molecular diversity and development remain largely unraveled. Many tegmental neurons originate in the embryonic
Eagleson M.
Concise Encyclopedia Chemistry, 5-5 (1994)
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