Cobalt(II) Chloride

CoCl₂

IUPAC: Cobalt(II) chloride

CAS: 7646-79-9

Ikhtisar

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.

Komposisi

Unsur Simbol Atom Massa Atom
Chlorine Cl 2 35,4500
Cobalt Co 1 58,9330

Komposisi Elemental

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

Kegunaan

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

Fakta Menarik

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

Keselamatan

  • ⚠ Carcinogen
  • ⚠ Toxic

Structure

SMILES

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

Sifat

Jenis
salt
Keadaan
solid
Massa Molar
129,84 g/mol
Kerapatan
3,3560 g/cm³
Titik Lebur
735,0 °C
Titik Didih
1049,0 °C
Kelarutan
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

Senyawa Terkait

Ammonium Chloride

NH₄Cl

Barium Chloride

BaCl₂

Calcium Sulfate

CaSO₄

Cerium(III) Chloride

CeCl₃

Copper(II) Sulfide

CuS

Ammonium Sulfate

(NH₄)₂SO₄

Barium Carbonate

BaCO₃

Calcium Citrate

Ca₃(C₆H₅O₇)₂

Calcium Phosphate

Ca₃(PO₄)₂

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).