Mercuric amidochloride

Mercuric amidochloride is an inorganic compound with the formula HgNH2Cl. It consists of a zig-zag 1-dimensional polymer (HgNH2)n with chloride counterions.[1][2] It arises from the reaction of ammonia and mercuric chloride. Addition of base converts it into "Millon's base", which has the formula [Hg2N]OH·(H2O)x. A variety of related amido and nitrido materials with chloride, bromide, and hydroxide are known.[3]

Mercuric amidochloride
IUPAC name
mercuric azanide chloride
Other names
mercuric amidochloride
mercury(II) amide chloride
mercury(II) amidochloride
ammoniated mercury
3D model (JSmol)
ECHA InfoCard 100.030.292
Molar mass 252.065 g/mol
Density 5.56 g/cm3
D08AK01 (WHO)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

Before the toxicity of mercury was appreciated, mercuric amidochloride, known as "ammoniated mercury", was used as a topical antiseptic and disinfectant.[4][5]

See also


  1. Wells, A.F. (1984). Structural Inorganic Chemistry. Oxford: Clarendon Press. ISBN 0-19-855370-6.
  2. Lipscomb, W. N. (1951). "The structure of mercuric amidochloride, HgNH2Cl". Acta Crystallographica. 4 (3): 266–8. doi:10.1107/S0365110X51000866.
  3. Holleman, A. F.; Wiberg, E. (2001). Inorganic Chemistry. San Diego: Academic Press. ISBN 0-12-352651-5.
  4. Aberer W, Gerstner G, Pehamberger H (September 1990). "Ammoniated mercury ointment: outdated but still in use". Contact Dermatitis. 23 (3): 168–71. doi:10.1111/j.1600-0536.1990.tb04778.x. PMID 2149317.
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