Zinc peroxide

Zinc peroxide
Names
	Other names zinc dioxide; zinc bioxide
Identifiers
CAS Number	1314-22-3 ;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.013.843
EC Number	215-226-7;
PubChem CID	10129902;
UNII	0I969DVM77 ;
CompTox Dashboard (EPA)	DTXSID5051658 ;
	InChI InChI=1S/O2.Zn/c1-2;/q-2;+2 Key: IPTOGCUGCFHDSS-UHFFFAOYSA-N;
	SMILES [Zn+2].[O-][O-];
Properties
Chemical formula	ZnO2
Molar mass	97.408 g/mol
Appearance	white-yellowish powder
Density	1.57 g/cm3
Melting point	212 °C (414 °F; 485 K) (decomposes)
Acidity (pKa)	~7 (3% solution)
Band gap	3.8 eV (indirect)
Structure
Crystal structure	Cubic
Space group	Pa3
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H271, H315, H319
NFPA 704 (fire diamond)	3 0 1
	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

Zinc peroxide (ZnO₂) appears as a bright yellow powder at room temperature. It was historically used as a surgical antiseptic. More recently zinc peroxide has also been used as an oxidant in explosives and pyrotechnic mixtures. Its properties have been described as a transition between ionic and covalent peroxides. Zinc peroxide can be synthesized through the reaction of zinc chloride and hydrogen peroxide.

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