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Magnesium trisilicate

CAS 1332-80-5

Also registered as 4 other CAS numbers

12533-11-8 · 19040-52-9 · 69851-37-2 · 14987-04-3

Concern score

Not assessed — no hazard data yet.

Magnesium trisilicate in plain language

What it is

Also known as Dimagnesium dioxotrisiloxane-1,3,3,5-tetrakis(olate) · Dicarbocalm · Dimagnesium trisilicon octaoxide · Kyowaad 630 · Magnesium mesotrisilicate · Magnesium silicate (Mg2Si3O8)

Show all 12 names

Magnesium silicon oxide (Mg2Si3O8) · Magnosil · Silicic acid (H4Si3O8), magnesium salt (1:2) · Silimag · magnesii trisilicas · magnesium silicates

What it does

Used in cosmetics as an abrasive, an absorbent and an anticaking agent.

  • Abrasive
  • Absorbent
  • Anticaking
  • Bulking
  • Opacifying
  • Viscosity controlling
Is it a concern?
We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

Regulation

No restrictions found. Magnesium trisilicate appears in these published regulatory listings.

  • Inactive ingredient in US drugs

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Industrial
  • USFDAinactive ingredient database6 entries
    • Route: ORAL; Dosage form: POWDER, FOR SUSPENSION; Maximum daily exposure: 70 mgSource →
    • Route: ORAL; Dosage form: TABLET; Maximum daily exposure: 74 mgSource →
    • Route: ORAL; Dosage form: TABLET, CHEWABLE; Maximum daily exposure: 1230 mgSource →
    • Route: ORAL; Dosage form: TABLET, COATED; Potency: 20 mgSource →
    • Route: ORAL; Dosage form: TABLET, DELAYED RELEASE; Maximum daily exposure: 120 mgSource →
    • Route: ORAL; Dosage form: TABLET, EXTENDED RELEASE; Maximum daily exposure: 225 mgSource →
  • EUCosIngActiveListed in CosIng inventory for cosmetic use.
    • Listed in CosIng inventory for cosmetic use.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 33 composition records across product categories including Raw materials, Specialty occupational products, Personal care. EPA CPDat classifies this chemical for functional uses including Abrasive, Absorbent, Viscosity modifier.
    • EPA CPDat observed this chemical in 33 composition records across product categories including Raw materials, Specialty occupational products, Personal care. EPA CPDat classifies this chemical for functional uses including Abrasive, Absorbent, Viscosity modifier.Source →

Expert safety opinions

No expert opinion on file for Magnesium trisilicate. 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 Magnesium trisilicate yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

4 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →

  • EPA Chemical and Products Database

    exposure · updated July 2016

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

  • FDA Inactive Ingredient Database

    regulatory · updated 2026-01-09

    Open →

Suitability

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

Fragrance avoidance

Nothing to weigh for this context yet.

No signal in this context

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.

Where it has been recorded

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

Source records

33

Named organisations

6

Raw materialsSpecialty occupational productsPersonal care

Typical roles

AbrasiveAbsorbentAnticakingBulkingOpacifyingViscosity controlling
See products using Magnesium trisilicate →

Catalog

Found in these products

Cosmetic and personal-care products that list Magnesium trisilicate are shown first. Their ingredient lists include Magnesium trisilicate; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 6 →Find products without it →