Is Ammonium Fluorosilicate safe in cosmetics?
Ammonium Fluorosilicate has a safety rating of "MODERATE" in our database. EU status: restricted. US status: permitted.
Moderate
Cosmetic Ingredient
Ammonium Fluorosilicate
Also known as: AI3-25550-X, Caswell No. 043, Diammonium fluorosilicate, EINECS 240-968-3, EPA Pesticide Chemical Code 075301 (+3 more)
INCI: AMMONIUM FLUOROSILICATE
Ammonium Fluorosilicate (CAS 16919-19-0) is a cosmetic cosmetic ingredient functioning as Oral care (fluoride source for anticaries protection). 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 16919-19-0 →
Auto-generated CPSR Part A draft with source citations
Cross-Vertical Regulatory Divergence
Ammonium Fluorosilicate is classified GHS Danger (H301, H311, H331, H412) 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
Oral care (fluoride source for anticaries protection)
Safety Rating
MODERATE
Regulatory Status
EU EU Status
restricted
EU Max Conc.
0.15%
US US Status
permitted
US Notes
Permitted in oral care under FDA fluoride OTC monograph
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Ammonium Fluorosilicate.
Calculate MoS for your specific formulation with the MoS Calculator.
ECHA REACH Registration
European Chemicals Agency REACH dossier and Substances of Very High Concern listing.
Registration Type
Full
Tonnage Band
10 - 100 tonnes
Substance Type
SUBSTANCE
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 (2)
FDA Indirect Food Contact Additives
EU CosIng Cosmetics Ingredient Database
Expert Verdict
Expert safety assessment and concern-level summary for Ammonium Fluorosilicate.
Regulatory Flags
eu_cosing_listed
Known Synonyms
AI3-25550-X
Caswell No. 043
Diammonium fluorosilicate
EINECS 240-968-3
EPA Pesticide Chemical Code 075301
Fluorosilicic acid, ammonium salt
Silicate, hexafluoro-, diammonium
UNII-1X545W620G
Chemical Function
Pharmaceutical
Regulatory Lists
Europe; Personal care; restricted
inert_ingredient; non_food_use; Pesticides
CEDI
Indirect additives food contact (10/2018)
Australian Status
AICIS status: listed
Frequently Asked Questions
Is Ammonium Fluorosilicate allowed in the EU?
Ammonium Fluorosilicate EU regulatory status: restricted. Maximum allowed concentration: 0.15%. This is based on EU Regulation 1223/2009 and its amendments.
What does Ammonium Fluorosilicate do in cosmetics?
Ammonium Fluorosilicate functions as: Oral care (fluoride source for anticaries protection). It is classified as a cosmetic ingredient in our database. CAS number: 16919-19-0.
Is Ammonium Fluorosilicate used outside cosmetics?
Ammonium 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 Ammonium Fluorosilicate have different safety status in cosmetics vs industrial chemicals?
Ammonium Fluorosilicate is classified GHS Danger (H301, H311, H331, H412) in the chemicals database but is restricted in EU cosmetics at max 0.15%.
Compliance Tools
Check Ammonium Fluorosilicate compliance across multiple jurisdictions:
Ingredient Decoder
Paste a full ingredient list for instant analysis
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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