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791776

Sigma-Aldrich

碳酸钾

anhydrous, free-flowing, Redi-Dri, ACS reagent, ≥99%

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About This Item

線性公式:
K2CO3
CAS號碼:
分子量::
138.21
Beilstein:
4267587
EC號碼:
MDL號碼:
分類程式碼代碼:
12352302
PubChem物質ID:
NACRES:
NA.21

等級

ACS reagent
anhydrous

品質等級

產品線

Redi-Dri

化驗

≥99%

形狀

powder

品質

free-flowing

雜質

≤0.005% silica
≤0.01% insolubles

pH值

11-13 (25 °C, 138 g/L)

mp

891 °C (lit.)

負離子痕跡

chloride (Cl-): ≤0.003%
phosphate (PO43-): ≤0.001%
sulfur compounds (as SO42-): ≤0.004%

正離子痕跡

Ca: ≤0.005%
Fe: ≤5 ppm
Mg: ≤0.002%
Na: ≤0.02%
heavy metals (as Pb): ≤5 ppm

SMILES 字串

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

InChI

1S/CH2O3.2K/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2

InChI 密鑰

BWHMMNNQKKPAPP-UHFFFAOYSA-L

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一般說明

碳酸钾是一种无机碱。它可作为碱参与环钯配合物催化的氯苯与苯乙烯的Heck反应。向K2CO3 (溶剂)中加入氨基酸(甘氨酸、肌氨酸和脯氨酸)可促进CO2的吸收。

應用

碳酸钾已用于制备双磺化双[4-(3-氨基苯氧基)苯基]砜,一种双磺化二胺单体。

它可用于以下研究:
  • 作为合成多取代碘苯衍生物的试剂。
  • 作为各种双酚类高分子量均聚物和共聚物合成反应所需碱。
  • 作为芳基卤和芳基硼酸的Suzuki偶联反应所需碱。
  • 苯乙烯和溴苯的Heck反应。

特點和優勢

  • 提高效率——免除需要松散硬化粉末的时间和精力
  • 更加安全——避免使用工具大力敲碎团块的风险
  • 更加经济——制备和溶剂化速度更快,提高效率并节约成本
  • 质量保证——经过专业检测的出色品质,无抗结剂添加
  • 灵活的用量选择——有从研究到放大级别的用量规格可供选择

法律資訊

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

象形圖

Exclamation mark

訊號詞

Warning

危險聲明

危險分類

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

標靶器官

Respiratory system

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


分析證明 (COA)

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Journal of molecular and cellular cardiology, 76, 208-217 (2014-09-01)
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Journal of the American Chemical Society, 136(29), 10486-10492 (2014-07-09)
We have measured the single-molecule conductance of a family of oligothiophenes comprising 1-6 thiophene moieties terminated with methyl-sulfide linkers using the scanning tunneling microscope-based break-junction technique. We find an anomalous behavior: the peak of the conductance histogram distribution does not
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