CAS 1313-59-3PubChem CID 73971
Sodium oxide
- IUPAC name
- disodium;oxygen(2-)
- Molecular formula
- Na2O
- Molecular weight
- 61.979 g/mol
- Exact mass
- 61.97445318 Da
- Topological polar surface area
- 1.0 Ų
- Hydrogen-bond donors
- 0
- Hydrogen-bond acceptors
- 1
- Covalent units
- 3
- Defined stereocentres
- 0
Also known as
Disodium monoxideNa2OSodium oxide (Na2O)3075U8R23DNatrum OxydatumRefChem:6243215-208-9235-641-7
5 more reported names
Disodium oxideUNII-3075U8R23DEINECS 215-208-9Sodium oxide, 80%SODIUM OXIDE [MI]
External database identifiers
- EPA DTXSID:DTXSID0049781
Evidence from additional scientific databases
NIH PubChem PUG-View
Exact identifier match73971
Attributed physical-property, hazard, environmental and use annotations.
- Density: 2.3 g/cm³ Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Density: 2.27 @25 °C Source: PAC Chemical Database, U.S. Department of Energy
- Melting Point: 1275 °C (sublimes) Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Physical Description: CBI; Large Crystals; Other Solid; Dry Powder; Dry Powder; Other Solid; Liquid; Dry Powder; Large Crystals Source: EPA Chemical Data Reporting (CDR)
- Physical Description: WHITE LUMPS OR POWDER. Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Solubility: Solubility in water: reaction Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Exposure Routes: Serious by all routes of exposure. Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Note: This chemical does not meet GHS hazard criteria for 11.4% (81 of 711) of reports. Source: European Chemicals Agency (ECHA)
- Signal: Danger Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H314 (86.9%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H318 (34.6%): Causes serious eye damage [Danger Serious eye damage/eye irritation] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P260, P264, P264+P265, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P363, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 711 reports by companies from 17 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 81 of 711 reports by companies.; There are 16 notifications provided by 630 of 711 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- Consumer Uses: Filler; Catalyst; Dehydrating agent (desiccant); Adsorbent; Intermediate; Other; Abrasives Source: EPA Chemical Data Reporting (CDR)
- Industry Uses: Other; Processing aids not otherwise specified; Stabilizing agent; Catalyst; Filler; Absorbent; Dehydrating agent (desiccant); Adsorbent; Intermediate Source: EPA Chemical Data Reporting (CDR)
Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record
Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.
Additional source coverage and match status
| Source | Result | Checked |
|---|---|---|
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.