Nickel(II) cyanide

Nickel(II) cyanide
Identifiers
CAS Number	557-19-7 ; tetrahydrate: 13477-95-7 ;
3D model (JSmol)	Interactive image; tetrahydrate: Interactive image;
ChemSpider	10711 ;
ECHA InfoCard	100.008.329
EC Number	209-160-8;
PubChem CID	11184; tetrahydrate: 71317429;
UNII	YX45CR8P6A;
UN number	1653
CompTox Dashboard (EPA)	DTXSID60971065 ;
	InChI InChI=1S/2CN.Ni/c21-2;/q2-1;+2 Key: NLEUXPOVZGDKJI-UHFFFAOYSA-N;
	SMILES [C-]#N.[C-]#N.[Ni+2]; tetrahydrate: [C-]#N.[C-]#N.O.O.O.O.[Ni+2];
Properties
Chemical formula	Ni(CN)2
Molar mass	110.729 g/mol
Appearance	yellow-brown solid (anhydrous); blue gray solid (tetrahydrate)
Solubility in water	insoluble
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H317, H334, H350, H372, H410
Precautionary statements	P201, P202, P260, P264, P270, P272, P273, P280, P281, P285, P302+P352, P304+P341, P308+P313, P314, P321, P333+P313, P342+P311, P363, P391, P405, P501 Preview warning: Omit Rules: keep P260, omit P261
Related compounds
Other cations	Iron(II) cyanide; Cobalt(II) cyanide
Related compounds	Potassium cyanonickelate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Nickel(II) cyanide is the inorganic compound with a chemical formula Ni(CN)₂. The trihydrate is a gray-green solid that is insoluble in most solvents including water, while the anhydrous form is a yellow solid.