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Topic summary

Sodium oxide

Sodium oxide
Names IUPAC name
Sodium oxide
Other names
  • Disodium oxide
  • Natrium oxide (historic)
  • Soda
  • Sodium oxidosodium
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard100.013.827EC Number
  • 215-208-9
UNII
UN number1825
  • InChI=1S/2Na.O/q2*+1;-2
  • [O-2].[Na+].[Na+]
Properties Na2OMolar mass61.979 g·mol Appearance white solid Density2.49 g/cm Melting point1,132 °C (2,070 °F; 1,405 K) Boiling point1,950 °C (3,540 °F; 2,220 K) sublimates sublimates at 1275 °C Reacts to form NaOHSolubilityReacts with ethanol−19.8·10 cm/mol Structure Antifluorite (face centered cubic), cF12Fm3m, No. 225 Tetrahedral (Na); cubic (O) Thermochemistry 72.95 J/(mol·K) 73 J/(mol·K) −416 kJ/mol −377.1 kJ/mol Hazards Occupational safety and health (OHS/OSH):
Main hazards
corrosive, reacts violently with water GHS labelling: H314P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501NFPA 704 (fire diamond)
3
0
1
W
Flash pointnonflammable Safety data sheet (SDS) ICSC 1653Related compounds
Other anions
Other cations
Related sodiumoxides
Related compounds
Sodium hydroxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Sodium oxide is a chemical compound with the formula Na2O. It is used in ceramics and glasses. It is a white solid. However, the compound itself is rarely encountered and instead, the name "sodium oxide" is used to describe components of various materials such as glasses and fertilizers which contain oxides that include sodium and other elements.

Wikipedia source