Definition
US FDA substance register · UNII 975S1VH3IB · registered name CETYL TRIMETHOXYSILANE · single chemical substance
Cetyl Trimethoxysilane is the silicon compound
Cosmetic roles
Safety & regulatory references
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
More data — names, identifiers, properties, test records, literature
Official labels & definitions
JCIA labelling name セチルトリメトキシシラン: 本品は、次の化学式で表されるケイ素化合物である。
Source: JCIA labelling names (Japan)
Names & identifiers
- CAS No.chemical registry number
- 16415-12-6
- EC No.EU chemical inventory number
- 240-464-3
- DTXSIDUS EPA chemical ID
- DTXSID9066047
- DTXCIDUS EPA compound ID
- DTXCID2035271
- IUPAC
- Hexadecyltri(methoxy)silane
- Molecular formula
- C19H42O3Si
- Molecular weight
- 346.627 g/mol
What products actually use it for
What the 12 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.
- Binder2
- Waterproofing agent2
- Heat stabilizer2
- Sealant (barrier)1
- No specific technical function1
- Plasticizer1
- Intermediate1
- Hardener1
1 other uses
- Dust suppressant1
Source: US EPA CompTox dashboard
Irritation and sensitisation studies
3 skin studies and 3 eye studies are on record.
The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.
See all 6 studies
- Category 6.3A (Category 2)
Skin Irritation · Read Across - Not likely to be sensitizing
skin sensitisation: in vivo (non-LLNA) · Screening · according to OECD Guideline 406 (Skin Sensitisation) (adopted 1992) - Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) (adopted 1992) according to EU Method B.4 (Acute Toxicity: Dermal Irritation / Corrosion) according to - Category 6.4A (Category 2A)
Eye Irritation · Read Across - Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) (adopted 1987) according to other guideline: EEC guideline 84/449/EEC according to - Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) (adopted 1997) according to EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion) according to
Source: US EPA CompTox dashboard
Linked databases 10
- Australian Industrial Chemicals Inventory (AICIS)
- EU CosIng ingredient list 2
- JCIA labelling names (Japan)
- Korea toxic substances GHS register (NIER)
- UniChem cross-reference IDs
- US EPA CompTox dashboard 2
- US EPA DSSTox chemical database
- US FDA substance registration (GSRS)
- US FDA Unique Ingredient Identifier (UNII)
- Wikidata