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242845

Sigma-Aldrich

乙酸酐

ACS reagent, ≥98.0%

同義詞:

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

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About This Item

線性公式:
(CH3CO)2O
CAS號碼:
分子量::
102.09
Beilstein:
385737
EC號碼:
MDL號碼:
分類程式碼代碼:
12352100
PubChem物質ID:
NACRES:
NA.21

等級

ACS reagent

品質等級

蒸汽密度

3.5 (vs air)

蒸汽壓力

10 mmHg ( 36 °C)
4 mmHg ( 20 °C)

化驗

≥98.0%

形狀

liquid

自燃溫度

629 °F

expl. lim.

10.3 %

雜質

MnO4- reducers, passes test

蒸發殘留物

≤0.003%

折射率

n20/D 1.390 (lit.)

bp

138-140 °C (lit.)

mp

−73 °C (lit.)

溶解度

H2O: slightly soluble

密度

1.08 g/mL (lit.)

負離子痕跡

chloride (Cl-): ≤5 ppm
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤5 ppm

正離子痕跡

Fe: ≤5 ppm
heavy metals: ≤2 ppm

SMILES 字串

CC(=O)OC(C)=O

InChI

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

InChI 密鑰

WFDIJRYMOXRFFG-UHFFFAOYSA-N

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一般說明

醋酸酐是一种有机溶剂溶于水后,其可经过溶剂分解得到乙酸。它被广泛用于各种醇的乙酰化。Wacher法(起始试剂=烯酮)和Knapsack法(起始试剂=乙醛)已报到可用于工业上制备乙酸酐。

應用

醋酸酐已作为反应组分之一,用于制备:
  • 2-乙酰氨基-5-氨基苯磺酸
  • 3,3′-双(磺酸根基)-4,4′-双(氯乙酰氨基)偶氮苯(BSBCA)
  • 10-乙酸基-9-硝基硬脂酸,烯丙酯
  • 9-硝基油酸
可用于在间歇式反应器中通过HBEA沸石乙酰化苯甲醚。

訊號詞

Danger

危險分類

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

儲存類別代碼

3 - Flammable liquids

水污染物質分類(WGK)

WGK 1

閃點(°F)

120.2 °F - closed cup

閃點(°C)

49 °C - closed cup

個人防護裝備

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


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分析證明 (COA)

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