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Merck

236497

Sigma-Aldrich

乙酸钾

ACS reagent, ≥99.0%

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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:
12352106
PubChem物質ID:
NACRES:
NA.21

等級

ACS reagent

蒸汽壓力

<0.0000001 hPa ( 25 °C)

化驗

≥99.0%

形狀

powder or crystals

雜質

≤0.005% insolubles

pH值

6.5-9.0 (25 °C, 5%)

溶解度

water: soluble 98.2 g/L at 20 °C

密度

1.57 g/cm3 at 25 °C (lit.)

負離子痕跡

chloride (Cl-): ≤0.003%
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.002%

正離子痕跡

Ca: ≤0.005%
Fe: ≤5 ppm
Mg: ≤0.002%
Na: ≤0.03%
heavy metals: ≤5 ppm (as Pb)

適合性

complies for IR spectroscopy

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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相关类别

一般說明

乙酸钾是一种吸湿性材料,在有机合成中用作碱。它还可作为缓冲溶剂和中和剂。

應用

乙酸钾用作:
  • 以DEG(二甘醇)为溶剂糖酵解硬质聚胺酯的催化剂。
  • 用于加成和聚合反应的亲核催化剂。
  • 环氧化物和 S-苯基硫代酸酯区域选择性反应的亲核催化剂。
  • 过渡金属催化反应的促进剂/碱。
  • 在邻苯二甲酰亚胺的光脱羧基亲核加成反应中作为甲基自由基来源,以及模板反应中作为钾离子来源。

乙酸钾还可以作为碱:
  • 用于异羟肟酸的洛森重排反应。
  • 用于E2 消除′反应。
  • 用于 α,α-二氯酮酯裂解和醇类的去质子化。

法律資訊

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

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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Potassium glutamate accumulates upon hyper-osmotic shock and serves as a temporary osmoprotectant. This salt leads to transcriptional activation of sets of genes that allow the cell to achieve long-term adaptation to high osmolarity. The current experiments show that potassium glutamate

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