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Merck
CN

33214

乙酸酐

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

别名:

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

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关于此项目

线性分子式:
(CH3CO)2O
化学文摘社编号:
108-24-7
分子量:
102.09
NACRES:
NA.21
PubChem Substance ID:
329754473
UNSPSC Code:
12352100
EC Number:
203-564-8
MDL number:
MFCD00008705
Beilstein/REAXYS Number:
385737

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产品名称

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

SMILES string

CC(=O)OC(C)=O

InChI key

WFDIJRYMOXRFFG-UHFFFAOYSA-N

InChI

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

grade

ACS reagent
puriss. p.a.

agency

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

vapor density

3.5 (vs air)

vapor pressure

10 mmHg ( 36 °C)
4 mmHg ( 20 °C)

assay

≥99% (GC)

autoignition temp.

629 °F

expl. lim.

10.3 %

impurities

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

refractive index

n20/D 1.390 (lit.)

bp

138-140 °C (lit.)

mp

−73 °C (lit.)

density

1.08 g/mL (lit.)

anion traces

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

cation traces

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

suitability

passes test for reaction against H2SO4

Quality Level

200

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相关类别

Application

  • 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).

General description

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.

Other Notes

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.

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Danger

Hazard Classifications

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

存储类别

3 - Flammable liquids

wgk

WGK 1

flash_point_f

120.2 °F - closed cup

flash_point_c

49 °C - closed cup

法规信息

易制毒化学品（2类）
危险化学品
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历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
BCCP0034
BCCN7009
SDBB2302
STBL2316
STBL1800

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P Barath et al.
The American journal of pathology, 137(3), 503-509 (1990-09-01)
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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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