Mercury(II) cyanide

Mercury(II) cyanide
Names
	IUPAC name dicyanomercury
	Other names mercuric cyanide; cyanomercury; neutral mercury cyanide (1:2); mercury dicyanide; hydrargyri cyanidum (homeopathy)
Identifiers
CAS Number	592-04-1 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	3679510
ChEBI	CHEBI:36573;
ChemSpider	11103;
ECHA InfoCard	100.008.857
EC Number	209-741-6;
Gmelin Reference	2563
PubChem CID	11591;
UNII	RWG7BD1032 ;
UN number	1636
CompTox Dashboard (EPA)	DTXSID3060457 ;
	InChI InChI=1S/2CN.Hg/c21-2; Key: FQGYCXFLEQVDJQ-UHFFFAOYSA-N; InChI=1/2CN.Hg/c21-2;/rC2HgN2/c4-1-3-2-5 Key: FQGYCXFLEQVDJQ-RYFBSBGDAX;
	SMILES C(#N)[Hg]C#N;
Properties
Chemical formula	Hg(CN)2
Molar mass	252.63 g/mol
Appearance	colorless crystals or white powder
Odor	odorless
Density	3.996 g/cm3
Melting point	320 °C (608 °F; 593 K) (decomposes)
Solubility in water	9.3 g/100 mL (14 °C) ; 53.9 g/100 mL (100 °C)
Solubility	25 g/100 mL (methanol, 19.5 °C) ; soluble in ethanol, ammonia, glycerin ; slightly soluble in ether ; insoluble in benzene
Magnetic susceptibility (χ)	−67.0·10−6 cm3/mol
Refractive index (nD)	1.645
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Highly toxic
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H300, H301, H310, H330, H373, H410
Precautionary statements	P260, P262, P264, P270, P271, P273, P280, P284, P301+P310, P302+P350, P304+P340, P310, P314, P320, P322, P330, P361, P363, P391, P403+P233, P405, P501
NFPA 704 (fire diamond)	4 0 2 POI
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	26 mg/kg
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Mercury(II) cyanide, also known as mercuric cyanide, is a poisonous compound of mercury and cyanide. It is an odorless, toxic white powder. It is highly soluble in polar solvents such as water, alcohol, and ammonia, slightly soluble in ether, and insoluble in benzene and other hydrophobic solvents.