Ferrous Chloride Dihydrate

Other Trading Names:

  • Iron(II) chloride dihydrate
  • Ferrous hydride dihydrate

CAS Number: 16399-77-2

HS Code: 28273990

Types of Packaging:

  • 25kg/Drum
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Ferrous Chloride Dihydrate

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Chemical Name

Ferrous Chloride Dihydrate



Molecular Formula


CAS Number



White-Green Monoclinic Crystals

Grade Standard

Industrial Grade


Highly soluble in water

Melting Point

120 °C (decomposes)

Boiling Point



2.39 g/cm3

Chemical Description 

  • Ferrous Chloride Dihydrate, with the chemical formula FeCl2·2H2O, is a greenish-white crystalline solid. It is highly soluble in water, releasing heat upon dissolution. This compound is known for its reductive properties and serves as a source of ferrous ions in a variety of industrial and chemical processes.
  • In water treatment applications, Ferrous Chloride Dihydrate is utilized for heavy metal removal, phosphate precipitation, and odor control. Its reductive capabilities allow it to transform contaminants into less harmful forms.
  • The compound finds extensive use in the synthesis of other chemicals, including organic compounds and inorganic iron salts. It acts as a reducing agent in various chemical reactions, contributing to the production of a wide range of industrial chemicals.
  • In the production of pigments and dyes, Ferrous Chloride Dihydrate is a key ingredient. It is involved in the synthesis of iron oxide pigments, which are used in paints, coatings, and coloring materials for concrete and other construction materials.
  • The metallurgical industry employs Ferrous Chloride Dihydrate in the manufacturing of iron alloys and in the treatment of metal surfaces. It is used as a mordant in dyeing and printing textiles, enhancing the adhesion of dye to the fiber.
  • Its application in agriculture includes the use as a micronutrient fertilizer, providing iron to plants to prevent or correct iron deficiency, which can lead to chlorosis.
  • Due to its low toxicity, Ferrous Chloride Dihydrate is also explored in environmental remediation efforts, particularly in the treatment of industrial wastewaters and the reduction of pollutants.
  • It serves as an effective corrosion inhibitor, especially in steel and iron industries. It forms a protective layer on metal surfaces, preventing oxidative damage and extending the life of metal structures and components.
  • Though less common, Ferrous Chloride Dihydrate is investigated for its potential as a food additive for iron fortification, addressing nutritional deficiencies without adversely affecting food quality or taste.
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Ferrous Chloride Dihydrate