SODIUM OXIDE
Sodium oxide
SODIUM OXIDE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.
Regulatory evidence by market
No rule for this ingredient has been imported for any of the 13 markets tracked here.
That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.
Chemical identity and properties
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
5 more reported names
External database identifiers
- EPA DTXSID:DTXSID0049781
Evidence from additional scientific databases
NIH PubChem PUG-View
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.
Inventory details for SODIUM OXIDE
INCI name
SODIUM OXIDE
Description
Sodium oxide
Record provenance
- Inventory reference
- 59462
- Imported identity
- SODIUM OXIDE
- Source update
- 15/10/2010
Annex records for SODIUM OXIDE
Key data
Official EU ingredient-name evidence
The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.
Related inventory evidence
Ingredients with overlapping formulation functions
Additional official and scientific sources
11 external databases to check this identity in
Each link searches that source for this identity. What each source is, and its legal weight
How SODIUM OXIDE appears in the CosIng inventory
The CosIng inventory lists SODIUM OXIDE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.
SODIUM OXIDE is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.
Frequently asked questions
Source note for SODIUM OXIDE
This page reproduces the CosIng inventory entry for SODIUM OXIDE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.
Use this inventory page to research SODIUM OXIDE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.
Tools & next steps
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