Mercury (II) amide chloride

Structural formula
General
Surname	Mercury (II) amide chloride
other names	Hydrargyrum praecipitatum album Mercury amido chloride white mercury precipitate (obsolete)
Molecular formula	Hg (NH 2 ) Cl
Brief description	white solid
External identifiers / databases
CAS number 10124-48-8 EC number 233-335-8 ECHA InfoCard 100.030.292 PubChem 23724951 ChemSpider 21159839 Wikidata Q415897
properties
Molar mass	252.07 g mol −1
Physical state	firmly
density	5.38 g cm −3
solubility	almost insoluble in water and ethanol soluble in warm acids
safety instructions
GHS hazard labeling from  Regulation (EC) No. 1272/2008 (CLP) , expanded if necessary danger H and P phrases H: 300-310-330-373-410 P: 260-264-273-280-284-301 + 310
Toxicological data	68 mg kg −1 ( LD 50 ,  mouse ,  oral )
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Mercury (II) amide chloride is a chemical compound of mercury .

Extraction and presentation

Mercury (II) amide chloride can be produced in the laboratory by simply precipitating a mercury (II) chloride solution with a medium strength ammonia solution:

${\displaystyle {\ce {HgCl2 + 2 NH3 -> HgNH2Cl + NH4Cl}}}$

properties

Mercury (II) amide chloride is a light-sensitive odorless white powder that is insoluble in cold water and alcohol and is soluble in acids and hot solutions of ammonia salts and is decomposed by boiling water.

use

Mercury (II) amide chloride is used:

• as a search substance for the detection of mercury contact allergies in patch testing
• as an ointment for skin and eye diseases
• earlier in dentistry ( amalgam )
• as a preservative in vaccines ( thiomersal , sodium timerfonate )
• as a wood and seed treatment agent
• in special industrial areas (battery production, photo industry, etc.)
• for the depigmentation of freckles

safety instructions

Mercury amide chloride was previously used in some medicines. It can trigger a group allergy to mercury and its inorganic and organic compounds. Active substances containing mercury should therefore not be used for toxicological reasons.

Individual evidence

1. ↑ ^{a b c d} David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Properties of the Elements and Inorganic Compounds, pp. 4-75.
2. ↑ ^{a b} Data sheet Mercury (II) amidochloride from Sigma-Aldrich , accessed on April 22, 2011 ( PDF ).
3. ↑ Not explicitly listed in Regulation (EC) No. 1272/2008 (CLP) , but with the specified labeling falls under the group entry inorganic compounds of mercury with the exception of mercuric sulphide and those specified elsewhere in this Annex in the Classification and Labeling Inventory of European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
4. ↑ Entry on Mercury, ammoniated in the ChemIDplus database of the United States National Library of Medicine (NLM), accessed December 8, 2019.
5. ↑ Georg Brauer: Mercury amidochloride . In: Handbook of Preparative Inorganic Chemistry . Ferdinand Enke Verlag, Stuttgart 1954, p. 824 .
6. ^ Mercury chlorides (Meyers Konversations-Lexikon, 1888)
7. ↑ Environmental medicine guideline: Mercury (University of Düsseldorf) ( Memento from September 16, 2010 in the Internet Archive )
8. ↑ ^{a b c d e} Assessment of the effects of allergies on reduced earning capacity in the context of BK 5101 (BGW) ( Memento of October 30, 2012 in the Internet Archive ). (PDF; 495 kB).
9. ↑ "Hydrargyrum praecipitatum album" in the Roche Lexicon Medicine , 5th ed.