Talk:Mercury(I) chloride

Not generally used in medicine any more; toxic risks are too great. -- Karada 23:19, 14 Mar 2005 (UTC)

7 November 2005: corrected molar mass.

Colour

 * The name calomel is thought to come from the Greek καλος beautiful, and μελας black. This somewhat surprising name (for a white compound) probably refers to its characteristic disproportionation reaction with ammonia, which gives a black coloration due to the metallic mercury formed.

I think that in its native state (rather than ground to a fine powder and cleansed of impurities for the laboratory) Calomel appears brown through dark brown to black. See for example http://www.geodil.com/image.asp?ImageID=219&history=0&categoryid=31. This, rather than the reaction with ammonia, probably explains the greek name.

Daviddariusbijan 16:13, 13 March 2006 (UTC)

All widely accepted chemistry textbooks and OED all cite the etimology based on the black color it will cause on contact with organic materials. The reaction itself is really spectacular while the native brownish material is anything but beautiful black.

Stapke 02:36, 18 June 2006 (UTC)

Name: mercury(i) vs. mercurous
In Google, ["mercurous chloride"] gets about 3x as many hits as ["mercury(i) chloride"]; and in Google Scholar (restricting to publications since 1990), about 7x as many hits. The general WP policy is to use the most common English-language name. Why are we using Mercury(I) chloride here? (I admit I was never very good at chemistry, but....) --macrakis (talk) 20:59, 7 December 2009 (UTC)


 * I searched Google and got the following:


 * "mercury(I) chloride": 1,230,000


 * "mercury(i) chloride": 175,000


 * "mercurous chloride": 32,300


 * "calomel": 205,000


 * I think the problem was typing mercury(i) instead of mercury(I) (lowercase i instead of capital I).


 * Ben (talk) 21:23, 7 December 2009 (UTC)

Queries - suggestions
- Rod57 (talk) 15:00, 18 January 2017 (UTC)
 * Melting point (in info box ) (above boiling/sublimation) refers to triple point. Could we specify the pressure of the triple point ?
 * How/Can large crystals be formed ? If any transparency, what refractive index ?
 * Low solubility in water. What [acids?] will dissolve it ?
 * What point group is the crystal structure ? The "space group I4/m 2/m 2/m" is hard to see in Tetragonal crystal system.

Is Mercury (I) chloride sp1 bonding like Mercury (II) bichoride ?
So on each article they do not mention the type of covalent bond (if I have not overlooked it). I know from my chemistry text that the II chloride is sp1 hybrid orbitals. — Preceding unsigned comment added by Ribazole (talk • contribs) 16:18, 23 July 2020 (UTC)

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Calomel. Redirect?
There is a page for Calomel. Should it not redirect here? ExpatSalopian (talk) 01:19, 12 February 2018 (UTC)


 * I think the page for Calomel should primarily be about the medicine called Calomel, with a brief explanation of the mineral and a link to this page. Lijil (talk) 11:51, 1 May 2024 (UTC)