Fragrance avoidance
Nothing to weigh for this context yet.
We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.
- beauty
- cleaning
- industrial
- pharma
Sodium oxide
CAS 37382-45-9
Also registered as 2 other CAS numbers
1242458-86-1 · 1313-59-3
Concern score
Not assessed — no hazard data yet.
Sodium oxide in plain language
Also known as Disodium oxide · Sodium monoxide · disodium;oxygen(2-) · Dinatriumoxid · Disodium monoxide · Na2O
Show all 14 names
Natrum Oxydatum · Oxyde de disodium · Q407467 · Sodium oxide (Na2O) · Sodium oxide, 80% · UNII-3075U8R23D · oxido de disodio · sodium oxide (nao)
Used in cosmetics as a pH buffer.
- Buffering
- pH adjuster
- We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.
Regulation
No restrictions found. Sodium oxide appears in these published regulatory listings.
- In marketed US drugs
- Found in consumer products
- Cleaning
- Industrial
EUCosIngActiveListed in CosIng inventory for cosmetic use.
- Listed in CosIng inventory for cosmetic use.Source →
USEPAcommercial use observedEPA CPDat observed this chemical in 641 composition records across product categories including Construction and building materials, Furniture and furnishings, Cleaning and safety. EPA CPDat classifies this chemical for functional uses including pH regulating agent, Binder, Flux agent.
- EPA CPDat observed this chemical in 641 composition records across product categories including Construction and building materials, Furniture and furnishings, Cleaning and safety. EPA CPDat classifies this chemical for functional uses including pH regulating agent, Binder, Flux agent.Source →
USFDAmarketed drug occurrenceFDA NDC lists this ingredient in 8 active drug products and 8 total products.
- FDA NDC lists this ingredient in 8 active drug products and 8 total products.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →
Expert safety opinions
No expert opinion on file for Sodium oxide. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.
SCCS
EU Scientific Committee on Consumer Safety
No SCCS opinion on file.
CIR
Cosmetic Ingredient Review (US expert panel)
No CIR safety assessment on file.
Evidence & sources
No graded research studies for Sodium oxide yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.
Where this comes from
- Open →
CosIng
regulatory · updated 2026-09-23
- Open →
EPA Chemical and Products Database
exposure · updated march 23, 2017
- Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
- Open →
FDA National Drug Code Directory
regulatory · updated 2026-12-31
- Open →
FDA GSRS UNII
registry · updated 2026-02-26
- Open →
openFDA Substance
registry · updated 2026-05-24
- Open →
PubChem Live Enrichment
chemistry · updated 2026-05-17
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
No signal in this context
Where it has been recorded
How often EPA CPDat has listed Sodium oxide in a product composition. These are source records, not Greenveil catalog products.
Source records
641
Named organisations
6
Construction and building materialsFurniture and furnishingsCleaning and safetyLaboratory suppliesElectronics/small appliancesBatteries
Typical roles
BufferingpH adjuster
Found in these products
Cosmetic and personal-care products that list Sodium oxide are shown first. Their ingredient lists include Sodium oxide; each product's own rating depends on its whole formula, so it is shown on the product page, not here.
