Is Magnesium Fluorosilicate safe in cosmetics?
Magnesium Fluorosilicate has a safety rating of "MODERATE" in our database. EU status: restricted. US status: permitted.
Moderate
Cosmetic Ingredient
Magnesium Fluorosilicate
Also known as: Silicate(2-), hexafluoro-, magnesium (1:1)
INCI: MAGNESIUM FLUOROSILICATE
Magnesium Fluorosilicate (CAS 16949-65-8) is a cosmetic cosmetic ingredient functioning as Antiplaque, oral care. EU Regulation 1223/2009 status: restricted, max 0.15%. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety data.
View industrial chemical safety profile for CAS 16949-65-8 →
Auto-generated CPSR Part A draft with source citations
Cross-Vertical Regulatory Divergence
Magnesium Fluorosilicate is classified GHS Danger (H301, H318, H332, H320, H335, H372, H319, H373) in the chemicals database but is restricted in EU cosmetics at max 0.15%.
Source: Cosmetics: ingredients.eu_status/eu_max; Chemicals: ghs_classifications.signal_word/hazard_statement_code
Function
Antiplaque, oral care
Safety Rating
MODERATE
Chemistry & Identifiers
IUPAC Name
magnesium hexafluorosilicon(2-)
InChIKey
INWUJAAIUAAHJA-UHFFFAOYSA-N
Regulatory Status
EU EU Status
restricted
EU Max Conc.
0.15%
US US Status
permitted
US Notes
Allowed - same OTC monograph considerations as other fluoride compounds for anticaries claims.
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Magnesium Fluorosilicate.
Calculate MoS for your specific formulation with the MoS Calculator.
EU CLP Annex VI Harmonized Classification
Legally binding harmonized classification per Regulation (EC) No 1272/2008 (CLP) Annex VI.
Signal Word
Danger
Pictograms
Acute Toxicity
Hazard Class and Category
Acute Tox. 3 *
Hazard Statements
- H301 Toxic if swallowed
Specific Concentration Limits / M-factors
*
Inserted via ATP: CLP00
ECHA REACH Registration
European Chemicals Agency REACH dossier and Substances of Very High Concern listing.
Registration Type
Full
Tonnage Band
100 - 1,000 tonnes
Substance Type
SUBSTANCE; GROUP
SVHC Candidate
No
Hazard classification: Restricted (Annex XVII)
Expanded Jurisdictional Detail
Additional regulatory detail beyond the 7-jurisdiction summary: Saudi SFDA, Korea MFDS, ASEAN ACD, Japan/Korea, Brazil/India, and cross-jurisdictional restriction entries.
SA Saudi SFDA (III - Restricted)
Product type: Oral products. Max: 0,15 % calculated as F. When mixed with other fluorine compounds permitted under this Annex, total F concentration must not exceed 0,15 %.
BRIN Brazil/India Cosmetics
India: Restricted · max 0,15 % calculated as F. When mixed with other fluorine compounds permitted under this Annex, total F concentration must not exceed 0,15 %
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Pharmaceutical
Regulatory List Membership (1)
EU CosIng Cosmetics Ingredient Database
Expert Verdict
Expert safety assessment and concern-level summary for Magnesium Fluorosilicate.
Regulatory Flags
eu_cosing_listed
Known Synonyms
Silicate(2-), hexafluoro-, magnesium (1:1)
Chemical Function
Pharmaceutical
Regulatory Lists
Europe; Personal care; restricted
Australian Status
AICIS status: listed
Frequently Asked Questions
Is Magnesium Fluorosilicate allowed in the EU?
Magnesium Fluorosilicate EU regulatory status: restricted. Maximum allowed concentration: 0.15%. This is based on EU Regulation 1223/2009 and its amendments.
What does Magnesium Fluorosilicate do in cosmetics?
Magnesium Fluorosilicate functions as: Antiplaque, oral care. It is classified as a cosmetic ingredient in our database. CAS number: 16949-65-8.
Is Magnesium Fluorosilicate used outside cosmetics?
Magnesium Fluorosilicate also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Does Magnesium Fluorosilicate have different safety status in cosmetics vs industrial chemicals?
Magnesium Fluorosilicate is classified GHS Danger (H301, H318, H332, H320, H335, H372, H319, H373) in the chemicals database but is restricted in EU cosmetics at max 0.15%.
Compliance Tools
Check Magnesium Fluorosilicate compliance across multiple jurisdictions:
Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
Check compliance across multiple jurisdictions
MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
Compare limits across jurisdictions
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