Mercurous Chloride Purified *

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Mercurous Chloride, also known as Mineral Calomel (a rare mineral), Dimercury Dichloride, Mercury(I) Chloride, appears as yellowish-white or dense white odorless hygroscopic powder or solid having the chemical formula Hg2Cl2 or Cl2Hg2. It is insoluble in Water and highly toxic that is able to readily decompose into metallic Mercury and the very poisonous Mercuric Chloride on exposure to sunlight or if heated in the presence of moisture. It can be prepared by sublimation of Mercury-Mercuric Chloride mixture or by precipitation from a Mercurous Chloride solution. Purified Grade, also known as Pure or Practical Grade, refers to those high-purity compounds that do not fulfil the ACS, the USP, or the FCC grade requirements. They are mostly used in conjunction with Lab Grade chemicals. In the United States of America (USA), Lab Alley is selling its high-quality Mercurous Chloride Calomel, Purified online at

Common Uses
  • Reagent
  • Chemical precursor
  • Fungicide
Commercial/Industrial Application
  • Photochemistry
  • Disinfectants
  • Calomel electrodes
  • Ceramic and porcelain painting
  • Cosmetics
Safety and Handling

Mercurous Chloride Lab Shipping Information:

DOT: Mercury compound, solid, n.o.s. (mercurous chloride), 6.1, UN2025, PG III

Mercurous Chloride is hazardous, hazmat fees apply.

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