Zinc arsenide

Zinc arsenide
Names
	Other names trizinc diarsenide
Identifiers
CAS Number	12006-40-5;
3D model (JSmol)	Interactive image;
ChemSpider	21242020 ;
ECHA InfoCard	100.031.338
EC Number	234-486-2;
PubChem CID	25147458;
CompTox Dashboard (EPA)	DTXSID00893156 ;
	InChI InChI=1S/2As.3Zn Key: RHKSESDHCKYTHI-UHFFFAOYSA-N;
	SMILES [Zn].[Zn]=[As].[Zn]=[As];
Properties
Chemical formula	Zn3As2
Molar mass	345.984 g/mol
Appearance	Silver grey
Density	5.53 g/cm3
Melting point	1,015 °C (1,859 °F; 1,288 K)
Solubility in water	Insoluble
Structure
Crystal structure	Tetragonal
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H331, H350, H410
Precautionary statements	P201, P202, P222, P231+P232, P261, P264, P270, P271, P273, P280, P281, P301+P310+P330, P304+P340, P308+P313, P321, P370+P378, P391, P403+P233, P405, P422, P501
NFPA 704 (fire diamond)	4 0 0
Safety data sheet (SDS)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Zinc arsenide (Zn₃As₂) is a binary compound of zinc with arsenic which forms gray tetragonal crystals. It is an inorganic semiconductor with a band gap of 1.0 eV.

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