What does the restriction note for AMMONIUM FLUOROSILICATE mean?

The restriction field for AMMONIUM FLUOROSILICATE reads: III/42. This is the restriction note from the CosIng inventory. For authoritative conditions and limits, always refer to the linked annex entries.

What other records share CAS 16919-19-0?

CAS 16919-19-0 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

How do I check if my formula contains AMMONIUM FLUOROSILICATE?

Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef 3186615/10/2010

AMMONIUM FLUOROSILICATE

Ammonium hexafluorosilicate

AMMONIUM FLUOROSILICATE is linked to 1 EU annex record on this page. Inventory note: III/42.

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Regulatory evidence by market

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Market	Evidence status	Records	Source language
European Union	Evidence linked Restricted entry found Open this evidence	1	English and EU languages
Great Britain	Evidence linked Restricted Open this evidence	1	English
Canada	Source mapped Official source mapped; ingredient rule not imported	0	English and French
New Zealand	Evidence linked Restricted Open this evidence	1	English
ASEAN	Evidence linked Restricted Open this evidence	1	English and national languages
China	Source mapped Official source mapped; ingredient rule not imported	0	Chinese with selected English material
Japan	Source mapped Official source mapped; ingredient rule not imported	0	Japanese; official English translation available
South Korea	Source mapped Official source mapped; ingredient rule not imported	0	Korean with some English names
United States	Source mapped Official source mapped; ingredient rule not imported	0	English
Australia	Source mapped Official source mapped; ingredient rule not imported	0	English
Brazil	Source mapped Official source mapped; ingredient rule not imported	0	Portuguese with INCI crosswalks
India	Evidence linked Restricted Open this evidence	1	English and Hindi
Saudi Arabia	Evidence linked Restricted Open this evidence	1	Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 16919-19-0

CAS 16919-19-0PubChem CID 28145

Ammonium silicofluoride

Ammonium fluorosilicate appears as a white crystalline solid. Noncombustible. Corrodes aluminum. Used as a disinfectant, in etching glass, metal casting, and electroplating. — CAMEO Chemicals

IUPAC name: diazanium;hexafluorosilicon(2-)

Molecular formula: F6H8N2Si
Molecular weight: 178.153 g/mol
Exact mass: 178.03609377 Da
Topological polar surface area: 2.0 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 7
Covalent units: 3
Defined stereocentres: 0

Also known as

Ammonium hexafluorosilicateAmmonium fluosilicateAmmonium fluorosilicateDiammonium hexafluorosilicateAmmonium silicon fluorideCaswell No. 043Diammonium fluosilicateDiammonium silicon hexafluoride

16 more reported names

Diammonium fluorosilicateDiammonium hexafluorosilicate(2-)LPE 6Silicate(2-), hexafluoro-, diammoniumHSDB 472Fluorosilicic acid, ammonium saltSilicate, hexafluoro-, diammoniumEINECS 240-968-3UN28541X545W620GEPA Pesticide Chemical Code 075301NSC 310005Diammonium fluosilicate ((NH4)2SiF6)AI3-25550-XSilicate(2-), hexafluoro-, ammonium (1:2)AMMONIUM SILICOFLUORIDE [HSDB]

Open full PubChem record PubChem annotations 3D structure image

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for AMMONIUM FLUOROSILICATE

INCI name

AMMONIUM FLUOROSILICATE

Description

Ammonium hexafluorosilicate

Record provenance

Inventory reference: 31866
Imported identity: AMMONIUM FLUOROSILICATE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for AMMONIUM FLUOROSILICATE

Annex III Restriction reference

Entry 42

Ammonium fluorosilicate

CAS: 16919-19-0

EC: 240-968-3

Key data

CAS

16919-19-0

240-968-3

Restriction

III/42

Function

ANTIPLAQUE: Helping protect against plaque.
ORAL CARE: Providing cosmetic effects to the oral cavity, e.g. cleansing, deodorising, protecting.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#1786 · AMMONIUM FLUOROSILICATE

Ingredients with overlapping formulation functions

ALUMINUM FLUORIDEANTIPLAQUE, ORAL CARE

AMMONIUM FLUORIDEANTIPLAQUE, ORAL CARE

AMMONIUM MONOFLUOROPHOSPHATEANTIPLAQUE, ORAL CARE

ANHYDROGLUCITOLANTIPLAQUE, HUMECTANT, SKIN CONDITIONING

ARGININE AMINOPHOSPHONOBUTYRIC ACIDANTIOXIDANT, ANTIPLAQUE, HAIR CONDITIONING, NAIL CONDITIONING, SKIN CONDITIONING - EMOLLIENT

ARTEMISIA PRINCEPS LEAF/TRITICUM VULGARE BRAN EXTRACTANTI-SEBUM, ANTIMICROBIAL, ANTIOXIDANT, ANTIPLAQUE, SKIN PROTECTING

ASPERGILLUS/CAMELLIA SINENSIS LEAF FERMENT POWDERANTIOXIDANT, ANTIPLAQUE

BACILLUS/CORN STEEP SOLIDS FERMENT FILTRATEANTIPLAQUE

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

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How AMMONIUM FLUOROSILICATE appears in the CosIng inventory

The CosIng inventory lists AMMONIUM FLUOROSILICATE as a cosmetic ingredient and this page links it to 1 annex record. The inventory entry captures names and identifiers, while the annex record shows where the substance is prohibited, restricted or positively listed in EU cosmetics law.

AMMONIUM FLUOROSILICATE is also tagged with 2 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

AMMONIUM FLUOROSILICATE appears in the EU CosIng inventory and has linked annex records. Check the annex records above for applicable restrictions, concentration limits and conditions of use. Annex II listing means prohibited; Annex III means restricted; Annexes IV, V and VI mean permitted under specified conditions.

The restriction field for AMMONIUM FLUOROSILICATE reads: "III/42". This is the restriction note recorded in the CosIng inventory for this ingredient. For authoritative conditions and limits, always refer to the linked annex entries above.

According to the EU CosIng inventory, AMMONIUM FLUOROSILICATE carries the following function designation(s):

CAS 16919-19-0 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for AMMONIUM FLUOROSILICATE

This page combines the CosIng inventory entry for AMMONIUM FLUOROSILICATE with 1 linked Annex II–VI record from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research AMMONIUM FLUOROSILICATE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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