Copper(II) selenite

Copper(II) selenite
Names
	IUPAC name Copper(II) selenite
	Other names Copper selenite dihydrate
Identifiers
CAS Number	10214-40-1 ; 15168-20-4 (dihydrate) ;
3D model (JSmol)	Interactive image;
ChemSpider	21241696 dihydrate;
ECHA InfoCard	100.030.465
EC Number	233-526-6;
PubChem CID	160923 anhydrous; 71317452 monohydrate; 24884280 dihydrate;
UNII	G2Y4101Z3O ; B084V60QBP (dihydrate) ;
CompTox Dashboard (EPA)	DTXSID20907163 ;
	InChI InChI=1S/Cu.H2O3Se/c;1-4(2)3/h;(H2,1,2,3)/q+2;/p-2 Key: JNRBLFVQPTZFAG-UHFFFAOYSA-L;
	SMILES [O-][Se](=O)[O-].[Cu+2];
Properties
Appearance	Blue
Solubility in water	Insoluble
Solubility	Slightly soluble in benzene and acids
Structure
Crystal structure	orthorhombic
Space group	Pcab (No. 61)
Lattice constant	a = 5.954 Å, b = 7.006 Å, c = 12.232 Å
Lattice volume (V)	510.2 Å3
Formula units (Z)	8 units per cell
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H331, H371, H410
Precautionary statements	P260, P264, P270, P271, P273, P301+P310, P304+P340, P311, P314, P321, P330, P391, P403+P233, P405, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Copper(II) selenite is an inorganic compound with the chemical formula CuSeO₃. It forms orthorhombic crystals. A blue dihydrate exists.