PROPYL TRIMETHICONE
Siloxanes and silicones, propyl trimethylsilyloxy, trimethylsilyl terminated
PROPYL TRIMETHICONE 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
Propyltris(trimethylsiloxy)silane
- IUPAC name
- trimethyl-[propyl-bis(trimethylsilyloxy)silyl]oxysilane
- Molecular formula
- C12H34O3Si4
- Molecular weight
- 338.74 g/mol
- Exact mass
- 338.15850108 Da
- Topological polar surface area
- 27.7 Ų
- Hydrogen-bond donors
- 0
- Hydrogen-bond acceptors
- 3
- Covalent units
- 1
- Defined stereocentres
- 0
Also known as
External database identifiers
- EPA DTXSID:DTXSID00462462
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 PROPYL TRIMETHICONE
INCI name
PROPYL TRIMETHICONE
Description
Siloxanes and silicones, propyl trimethylsilyloxy, trimethylsilyl terminated
Record provenance
- Inventory reference
- 58398
- Imported identity
- PROPYL TRIMETHICONE
- Source update
- 15/10/2010
Annex records for PROPYL TRIMETHICONE
Key data
- HUMECTANT
- Retaining and/or preserving the moisture in a product during use.
- SKIN CONDITIONING
- Maintaining the skin in good condition.
- SOLVENT
- Dissolving other components of cosmetics. Solvents are usually liquids (aqueous and nonaqueous).
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 PROPYL TRIMETHICONE appears in the CosIng inventory
The CosIng inventory lists PROPYL TRIMETHICONE 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.
PROPYL TRIMETHICONE is also tagged with 3 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 PROPYL TRIMETHICONE
This page reproduces the CosIng inventory entry for PROPYL TRIMETHICONE 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 PROPYL TRIMETHICONE 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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