Official EU label nameGlossary entry 20733

PHENYL TRIMETHICONE

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 0 of 13 indexed market datasets: 0 country records and 0 EU Annex records. Every result and evidence gap is listed below.

0 markets with evidence

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Markets with evidence

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Resolved identifiers

Resolved substance identity

CAS:2116-84-9

EC:218-320-6

Ingredient index records:

PHENYL TRIMETHICONE

Cosmetic functions: ANTIFOAMING, HAIR CONDITIONING, SKIN CONDITIONING

1,1,5,5,5-Hexamethyl-3-phenyl-3-[(trimethylsilyl)oxy]trisiloxane

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1 matched or reported name

PHENYL TRIMETHICONE

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name PHENYL TRIMETHICONE.

That is a statement about this inventory, not about the law: no imported rule is not evidence that a substance is permitted. A rule may exist under a different name, under a CAS or EC number this glossary entry does not carry, or in a dataset not yet imported.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 2116-84-9

CAS 2116-84-9PubChem CID 62427

1,1,1,5,5,5-Hexamethyl-3-phenyl-3-(trimethylsilyloxy)trisiloxane

IUPAC name: trimethyl-[phenyl-bis(trimethylsilyloxy)silyl]oxysilane

Molecular formula: C15H32O3Si4
Molecular weight: 372.75 g/mol
Exact mass: 372.14285102 Da
Topological polar surface area: 27.7 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

RefChem:1051654Phenyltris(trimethylsiloxy)silane1,1,1,5,5,5-hexamethyl-3-phenyl-3-((trimethylsilyl)oxy)trisiloxaneTris(trimethylsiloxy)phenylsilaneC15H32O3Si4Silicone DC 556S3QI0ZXT5XDC 556

16 more reported names

CS-01862801,1,1,5,5,5-hexamethyl-3-phenyl-3-[(trimethylsilyl)oxy]trisiloxaneTrisiloxane, 1,1,1,5,5,5-hexamethyl-3-phenyl-3-((trimethylsilyl)oxy)-Dow Corning 556Gransil PM-56Phenyl trimethyl siloxaneUNII-S3QI0ZXT5X556 Phenyl Trimethiconetrimethyl-[phenyl-bis(trimethylsilyloxy)silyl]oxy-silanephenyl tris(trimethylsiloxy)silanePhenyltris(trimethylsiloxyl)silaneLINXHFKHZLOLEI-UHFFFAOYSA-NPhenyltris(trimethylsilyloxy)silaneEINECS 218-320-6Trisiloxane, 1,1,1,5,5,5-hexametAS-15561

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External database identifiers

EPA DTXSID:DTXSID6051857

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Additional authoritative substance research

Each link searches that source for this identity. A link is a research route, not a claim that the source holds an exact record. What each source is, and its legal weight

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 US EPA CompTox CTX APIs

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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