MAGNESIUM SILICATE
Silicic acid, magnesium salt
MAGNESIUM SILICATE 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
Magnesium Silicate
Magnesium silicate is a compound of magnesium oxide and silicon. It is the magnesium salt of silicic acid containing an unspecified amount of water. The molecular formula can be expressed more clearly as MgSiO3.xH2O. It is known as talc and it presents many uses in the cosmetic industry, food industry and pharmaceutical industry. Under the FDA, magnesium silicate is determined as a member of the substances generally recognized as safe (GRAS) to be used as an anticaking agent. — DrugBank
- IUPAC name
- magnesium;tris(oxygen(2-));silicon(4+)
- Molecular formula
- MgO3Si
- Molecular weight
- 100.39 g/mol
- Exact mass
- 99.9467121 Da
- Topological polar surface area
- 3.0 Ų
- Hydrogen-bond donors
- 0
- Hydrogen-bond acceptors
- 3
- Covalent units
- 5
- Defined stereocentres
- 0
Also known as
16 more reported names
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 MAGNESIUM SILICATE
INCI name
MAGNESIUM SILICATE
Description
Silicic acid, magnesium salt
Record provenance
- Inventory reference
- 35118
- Imported identity
- MAGNESIUM SILICATE
- Source update
- 15/10/2010
Annex records for MAGNESIUM SILICATE
Key data
- ABSORBENT
- Taking up water- and/or oil-soluble (dissolved or finely dispersed) substances.
- ANTICAKING
- Preventing agglomeration of particulate solids into lumps or hard masses (cohesive cake), thus allowing free flow of particles.
- BULKING
- Non-reactive (chemically inert), solid ingredients that dilute other solids and/or increase the volume of cosmetic products.
- OPACIFYING
- Reducing transparency or translucency of cosmetics.
- VISCOSITY CONTROLLING
- Increasing or decreasing the viscosity (thickness) of cosmetics.
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 MAGNESIUM SILICATE appears in the CosIng inventory
The CosIng inventory lists MAGNESIUM SILICATE 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.
MAGNESIUM SILICATE is also tagged with 5 cosmetic functions 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 MAGNESIUM SILICATE
This page reproduces the CosIng inventory entry for MAGNESIUM SILICATE 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 MAGNESIUM SILICATE 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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