Sodium superoxide

Sodium superoxide
Names
	IUPAC name sodium superoxide
	Other names sodium superoxide; sodium dioxide
Identifiers
CAS Number	1313-60-6 ;
3D model (JSmol)	Interactive image;
ChemSpider	8305406;
PubChem CID	61542;
RTECS number	WE2860010;
UNII	3GSN3JCJ5K ;
UN number	2547
CompTox Dashboard (EPA)	DTXSID30894055 ;
	InChI InChI=1S/Na.HO2/c;1-2/h;1H/q+1;/p-1 Key: TZACNHSIZFFYEH-UHFFFAOYSA-M;
	SMILES [O-][O].[Na+];
Properties
Chemical formula	NaO2
Molar mass	54.9886 g/mol
Appearance	Yellow to orange crystalline solid
Density	2.2 g/cm3
Melting point	551.7 °C (1,025.1 °F; 824.9 K)
Boiling point	Decomposes
Solubility in water	Decomposes
Basicity (pKb)	N/A
Structure
Crystal structure	cubic
Thermochemistry
Heat capacity (C)	72.1 J/mol K
Std molar; entropy (S⦵298)	115.9 J/mol K
Std enthalpy of; formation (ΔfH⦵298)	-260.2 kJ/mol
Gibbs free energy (ΔfG⦵)	-218.4 kJ/mol
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H271, H314
Precautionary statements	P210, P220, P260, P280, P303+P361+P353, P305+P351+P338
NFPA 704 (fire diamond)	3 0 1 OX
Flash point	Non flammable
Related compounds
Other anions	sodium oxide; sodium peroxide
Other cations	Lithium superoxide; Potassium superoxide; Rubidium superoxide; Caesium superoxide
	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

Sodium superoxide is the inorganic compound with the formula Na O₂. This yellow-orange solid is a salt of the superoxide anion. It is an intermediate in the oxidation of sodium by oxygen.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.