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Merck

25059

Sigma-Aldrich

乙酸钾

puriss., meets analytical specification of Ph. Eur., BP, E261, 99-101%

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About This Item

线性分子式:
CH3COOK
CAS号:
分子量:
98.14
Beilstein:
3595449
EC號碼:
MDL號碼:
分類程式碼代碼:
12352300
PubChem物質ID:
NACRES:
NA.21

蒸汽壓力

<0.0000001 hPa ( 25 °C)

品質等級

等級

puriss.

化驗

99-101%

形狀

crystalline

品質

meets analytical specification of Ph. Eur., BP, E261

雜質

residual solvents, complies
≤0.0004% heavy metals (as Pb)
≤0.05% KMnO4 red. matter (as HCOOH)

損耗

≤1% loss on drying, 150 °C, 2 h

pH值

7.5-9 (20 °C, 5%)

密度

1.57 g/cm3 at 25 °C (lit.)

負離子痕跡

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤100 mg/kg

正離子痕跡

Al: ≤1 mg/kg
As: ≤2 mg/kg
Ca: ≤50 mg/kg
Cu: ≤4 mg/kg
Fe: ≤10 mg/kg
Mg: ≤30 mg/kg
Na: ≤5000 mg/kg
Pb: ≤4 mg/kg
Zn: ≤10 mg/kg

SMILES 字串

[K+].CC([O-])=O

InChI

1S/C2H4O2.K/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1

InChI 密鑰

SCVFZCLFOSHCOH-UHFFFAOYSA-M

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一般說明

醋酸钾是一种吸湿性钾盐。它可以通过用氢氧化钾或碳酸钾中和乙酸来制备。它可以作为聚合和加成反应的亲核催化剂,在取代和加成反应中作为醋酸阴离子的来源。它可以在各种有机反应中用作碱和促进剂。

應用

醋酸钾用作催化剂:
  • 以糠醛和棕榈酸酐为原料制备 2-十六烷基呋喃。
  • 醋酸钾可用作碱:羟肟酸到氨基甲酸的 Lossen 重排。
  • In E2 E2 消除反应。
  • 从烷氧基酰胺底物形成内酯。

醋酸钾也用作促进剂:
  • 钯催化剂环境下芳基氯化物与双(频哪醇合)二硼的硼化反应。
  • α, β-不饱和酮的 β-硼化。

儲存類別代碼

13 - Non Combustible Solids

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable


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