Cobalt(II) Chloride

CoCl₂

IUPAC: Cobalt(II) chloride

CAS: 7646-79-9

Tổng quan

Cobalt(II) chloride changes from blue (anhydrous) to pink (hydrated) with moisture, making it a popular humidity indicator. It is used in silica gel desiccants.

Thành phần

Nguyên tố Ký hiệu Nguyên tử Khối lượng nguyên tử
Chlorine Cl 2 35,4500
Cobalt Co 1 58,9330

Thành phần nguyên tố

Cl
Chlorine ×2
54,6%
Co
Cobalt ×1
45,4%

Công dụng

  • • Humidity indicator
  • • Invisible ink
  • • Electroplating
  • • Catalyst

Sự thật thú vị

  • ✦ The blue-to-pink color change with humidity is used in weather-predicting novelty items

An toàn

  • ⚠ Carcinogen
  • ⚠ Toxic

Structure

SMILES

[Cl-].[Cl-].[Co+2]

Tính chất

Loại
salt
Trạng thái
solid
Khối lượng mol
129,84 g/mol
Mật độ
3,3560 g/cm³
Điểm nóng chảy
735,0 °C
Điểm sôi
1049,0 °C
Độ hòa tan
529 g/L at 20°C

Molecular Descriptors

Exact Mass
128,8709
TPSA
0,0 Ų
H-Bond Donors
0
H-Bond Acceptors
2
Rotatable Bonds
0
Heavy Atoms
3
Complexity
0,0

Hợp chất liên quan

Diammonium Phosphate

(NH₄)₂HPO₄

Ammonium Chloride

NH₄Cl

Barium Chloride

BaCl₂

Cadmium Sulfide

CdS

Calcium Sulfate

CaSO₄

Cerium(III) Chloride

CeCl₃

Copper(II) Sulfide

CuS

Ammonium Sulfate

(NH₄)₂SO₄

Ammonium Bicarbonate

NH₄HCO₃

Calcium Propionate

Ca(C₂H₅COO)₂

Frequently Asked Questions

What is Cobalt(II) Chloride?
Cobalt(II) Chloride (CoCl₂) is a salt compound with the IUPAC name Cobalt(II) chloride.
What is the molecular weight of Cobalt(II) Chloride?
Cobalt(II) Chloride has a molar mass of 129.84 g/mol.
What state is Cobalt(II) Chloride at room temperature?
Cobalt(II) Chloride is a solid at room temperature.
Is Cobalt(II) Chloride organic or inorganic?
Cobalt(II) Chloride is classified as an inorganic compound.
What elements make up Cobalt(II) Chloride?
Cobalt(II) Chloride (CoCl₂) is composed of Chlorine (Cl), Cobalt (Co).