beauty
cleaning
food
industrial

Sodium metasilicate

CAS 1344-09-8 · 20/100 · High conf.

Also registered as 13 other CAS numbers

84992-49-4 · 8014-92-4 · 57447-81-1 · 1033016-09-9 · 1173151-60-4 · 1374246-85-1 · 1678537-99-9 · 1884160-94-4 · 1919815-82-9 · 2764688-18-6 · 2932501-00-1 · 2943989-32-8 · 6834-92-0

Concern score

20/100Minor concern based on regulatory listings.

High confidence

Sodium metasilicate in plain language

What it is: Also known as Sodium Silicate · Sodium silicate (Na2SiO3) · Disodium oxosilanebis(olate) · Silicic acid (H2SIO3), disodium salt · Silicic acid (H2SIO3), sodium salt (1:2) · Sodium metasilicate (NA2SIO3)
Show all 36 names
Sodium silicon oxide (NA2SIO3) · disodium;dioxido(oxo)silane · Agrosil LR · Agrosil S · Blue Meta · Britesil · Carsil · Crystamet · Dinatriummetasilicat · Disodium metasilicate · Disodium monosilicate · Disodium silicate · Dryseq · Metso beads 2048 · Metso pentabead 20 · Portil A · Pyramid 1 · Pyramid 8 · Sikalon · Silica E · Silica K · Silica N · Silica R · Silican · Sodium sesquisilicate · Sodium silicate glass · Sodium siliconate · Sodium water glass · Soluble glass · Waterglass
What it does: Used in cosmetics as an anticorrosive, a pH buffer and a chelating agent.
Anticorrosive
Buffering
Chelating
Surfactant
Chelating agent
pH adjuster
Is it a concern?: Minor concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

Why it's flagged

EPA CPDat observed this chemical in 2196 composition records across product categories including Raw materials, Home maintenance, Cleaning products and household care.

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

No restrictions found. Sodium metasilicate appears in these published regulatory listings.

Recorded in these product areas

Found in consumer products
Cleaning
Pharma
Industrial

EUCosIngActiveListed in CosIng inventory for cosmetic use.
- Listed in CosIng inventory for cosmetic use.Source →
EUEFSAEFSA opinionScientific Opinion on the evaluation of the substances currently on the list in the annex to Commission Directive 96/3/EC as acceptable previous cargoes for edible fats and oils - Part III of III (EFSA CONTAM)
- Scientific Opinion on the evaluation of the substances currently on the list in the annex to Commission Directive 96/3/EC as acceptable previous cargoes for edible fats and oils - Part III of III (EFSA CONTAM)Source →
USEPAcommercial use observedEPA CPDat observed this chemical in 2196 composition records across product categories including Raw materials, Home maintenance, Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Chelating agent, Cleaning agent, Corrosion inhibitor.
- EPA CPDat observed this chemical in 2196 composition records across product categories including Raw materials, Home maintenance, Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Chelating agent, Cleaning agent, Corrosion inhibitor.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

Independent scientific assessments cited by the records we hold, with the year and link where the record gives one.

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.
EFSA
European Food Safety Authority
- Scientific Opinion on the evaluation of the substances currently on the list in the annex to Commission Directive 96/3/EC as acceptable previous cargoes for edible fats and oils - Part III of III (EFSA CONTAM)
  2012 · EU EFSA listing · Read the source →

Evidence & sources

No graded research studies for Sodium metasilicate yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

7 data sources

Where this comes from

CosIng
regulatory · updated 2026-09-23
Open →
EFSA OpenFoodTox
regulatory · updated 2026-10-04
Open →
EPA Chemical and Products Database
exposure · updated oct. 16, 2018
Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
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
Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Food use

Food-use source coverage is present in the current record.

Good fit

The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.

Fragrance avoidance

No fragrance-linked caution surfaced in the current profile.

Good fit

This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.

Where it has been recorded

How often EPA CPDat has listed Sodium metasilicate in a product composition. These are source records, not Greenveil catalog products.

Source records

2,196

Named organisations

Raw materialsHome maintenanceCleaning products and household careBatteriesVehicleCleaning and safety

Typical roles

AnticorrosiveBufferingChelatingSurfactantChelating agentpH adjuster

See products using Sodium metasilicate →

Catalog

Found in these products

Their ingredient lists include Sodium metasilicate; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 89 →Find products without it →