Talk:Mercury(I) chloride

Chemicals: Core Mid‑importance

	This article is within the scope of WikiProject Chemicals, a daughter project of WikiProject Chemistry, which aims to improve Wikipedia's coverage of chemicals. To participate, help improve this article or visit the project page for details on the project.ChemicalsWikipedia:WikiProject ChemicalsTemplate:WikiProject Chemicalschemicals articles
Mid	This article has been rated as Mid-importance on the project's importance scale.
	This is a core article in the WikiProject Chemicals worklist.

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[edit]

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)[reply]

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)[reply]

Name: mercury(i) vs. mercurous[edit]

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)[reply]

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)[reply]

Queries - suggestions[edit]

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.

- Rod57 (talk) 15:00, 18 January 2017 (UTC)[reply]

Is Mercury (I) chloride sp1 bonding like Mercury (II) bichoride ?[edit]

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)[reply]

External links modified[edit]

Hello fellow Wikipedians,

I have just modified one external link on Mercury(I) chloride. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

Added archive https://web.archive.org/web/20060425193836/http://www.npi.gov.au/database/substance-info/profiles/53.html to http://www.npi.gov.au/database/substance-info/profiles/53.html

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 18 January 2022).

If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 16:03, 8 June 2017 (UTC)[reply]

Calomel. Redirect?[edit]

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