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Merck

239216

Sigma-Aldrich

碳酸钙

ACS reagent, ≥99.0%, powder

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About This Item

线性分子式:
CaCO3
CAS号:
分子量:
100.09
Beilstein:
8008338
EC號碼:
MDL號碼:
分類程式碼代碼:
12352300
PubChem物質ID:
NACRES:
NA.21
化驗:
≥99.0%
等級:
ACS reagent
形狀:
powder

等級

ACS reagent

品質等級

化驗

≥99.0%

形狀

powder

雜質

≤0.002 meq/g water-soluble titr. base
≤0.005% oxidizers
≤0.01% NH4OH pptd.
≤0.01% insol. dil. HCl

pH值

8

密度

2.93 g/mL at 25 °C (lit.)

負離子痕跡

chloride (Cl-): ≤0.001%
fluoride (F-): ≤0.0015%
sulfate (SO42-): ≤0.01%

正離子痕跡

Ba: ≤0.005%
Fe: ≤0.003%
K: ≤0.01%
Mg: ≤0.02%
NH4+: ≤0.003%
Na: ≤0.1%
Sr: ≤0.1%
heavy metals: ≤0.001% (by ICP-OES)

SMILES 字串

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

InChI

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

InChI 密鑰

VTYYLEPIZMXCLO-UHFFFAOYSA-L

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一般說明

CaCO3 天然存在,是石灰石、大理石和白垩的主要成分,可通过氢氧化钙溶液和二氧化碳沉淀制备。

應用

碳酸钙可作为前体制备Pd/CaCO3,它可以作为催化剂用于:
  • Miyaura-Suzuki交叉偶联反应。
  • 通过芳基卤化物和三丁基苯基锡的无配体Stille交叉偶联反应合成联苯。
它还可以作为碱用于Pd催化氟化卤代芳基与烯烃的区域选择性Heck反应合成被取代的烯烃。

法律資訊

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

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

nwg

閃點(°F)

Not applicable

閃點(°C)

Not applicable


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