Cobalt Chloride Hexahydrate

Basic Info:

• CAS Number: 7791-13-1

• Molecular Formula: CoCl₂·6H₂O

• Molar Mass: 237.93 g/mol

• Product Code: C805641

• Pack Size: 500 g

• Grade: Laboratory/Analytical Grade

• Appearance: Reddish-purple crystalline solid

• Odor: Odorless

• Solubility: Highly soluble in water and ethanol

• Density: ~1.92 g/cm³

• Color Change: Pink when hydrated, blue when anhydrous

Product Description

Cobalt chloride hexahydrate is a hydrated cobalt salt of high purity, widely used in laboratories and industrial applications. It is particularly valued for its moisture-sensitive color-changing property: hydrated crystals are pink to reddish-purple, while the anhydrous form is blue.

This compound is commonly used as:

• A laboratory reagent for chemical synthesis and analysis

• A humidity indicator due to its reversible color change

• A catalyst precursor in organic and inorganic reactions

• An electroplating additive and pigment source

Its high solubility in water and alcohol, combined with its stable crystalline form, makes it ideal for research, educational experiments, and industrial processes. Proper handling is required, as it may cause irritation if inhaled, ingested, or in contact with skin.