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Merck
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安全信息

8.02540

Sigma-Aldrich

Cobalt(II) chloride anhydrous

for synthesis

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别名:
Cobalt(II) chloride anhydrous, Cobalt dichloride
经验公式（希尔记法）:
Cl2Co
CAS号:
7646-79-9
分子量:
129.84
MDL编号:
MFCD00010938
UNSPSC代码:
12352302
EC索引号:
231-589-4
NACRES:
NA.22

等级

anhydrous

质量水平

200

形式

powder

效能

418 mg/kg LD50, oral (Rat)

mp

735 °C

溶解性

soluble 585.9 g/L

密度

3.36 g/cm3 at 25 °C

储存温度

2-30°C

InChI

1S/2ClH.Co/h2*1H;/q;;+2/p-2

InChI key

GVPFVAHMJGGAJG-UHFFFAOYSA-L

应用

Cobalt(II) chloride anhydrous (CoCl2) can be used as a catalyst in organic synthesis for the transformation of the various functional groups. For example, synthesis of esters via cleavage of ethers by acyl chlorides; acylation of alcohols and amines by anhydrides; and regioselective cleavage of oxiranes. It is also used to synthesize mixed acetals by the addition reaction between alcohols and vinyl ethers.
CoCl2 can be used as a catalyst:
  • For the dealkylation of tertiary amines.
  • In the synthesis of thioketones and thioaldehydes via thionation of carbonyl compounds in the presence of bis(trimethylsilyl) sulfide.
  • In the oxidation of aromatic and aliphatic aldehydes to carboxylic acids in the presence of molecular oxygen and acetic anhydride.
  • In the stereoselective opening of epoxides with N-substituted anilines.

CoCl2 can also be used as:
  • A precursor to synthesize magnetic cobalt nanorods via decomposition of the cobalt coordination complex.
  • A catalyst to prepare acid anhydrides by the reaction of acid chlorides with carboxylic acids.
  • A reagent in the carbon-carbon bond-forming reactions involving active methylene compounds.

分析说明

Assay (argentometric): ≥ 98.0 %
Water (K. F.): ≤ 2.0 %

警示用语：

Danger

危险分类

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B Inhalation - Eye Dam. 1 - Muta. 2 - Repr. 1B - Resp. Sens. 1 - Skin Sens. 1

储存分类代码

6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable

法规信息

危险化学品

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Cobalt (II) chloride catalyzed syntheses of acid anhydrides from acid chlorides
Srivastava RR and Kabalka GW
Tetrahedron Letters, 33(5) (1992)
Synthesis and magnetic properties of Co nanorod superlattices
Wetz F, et al.
Materials Science and Engineering, C, 27(5-8) (2007)
Cobalt (II) Chloride
Periasamy M, et al.
eEROS (Encyclopedia of Reagents for Organic Synthesis) (2001)

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