Ingredient Dictionary

TRIETHOXYCAPRYLYLSILANE

Octyltriethoxysilane is an organosilicon compound.

How much products actually contain

No product states its amount yet.

Of the products containing it, 1,037 list it before the 1% line and 819 after it (usually 1% or less).

Products using this ingredient

12 of 1,795 confirmed · likeliest to carry enough first · See all 1,795

Definition

Octyltriethoxysilane is an organosilicon compound.

Source: PubChem

US FDA substance register · UNII LDC331P08E · registered name TRIETHOXYCAPRYLYLSILANE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Silane, triethoxyoctyl-

Cosmetic roles

Holds powders togetherBINDING

Safety & regulatory references

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

Reviewed by CIR: Final Report: Safety Assessment of Alkoxy Alkyl Silanes as Used in Cosmetics

Source: US Cosmetic Ingredient Review (CIR)

More data — names, identifiers, properties, test records, literature

Official labels & definitions

JCIA labelling name トリエトキシカプリリルシラン: 本品は、シリコンエーテルであり、次の化学式で表される。

Source: JCIA labelling names (Japan)

Names & identifiers

TRIETHOXYCAPRYLYLSILANEINCI트라이에톡시카프릴릴실레인Korean label name (MFDS standard)Silane, triethoxyoctyl-SynonymトリエトキシカプリリルシランJapanese labelling name

CAS No.chemical registry number: 2943-75-1
EC No.EU chemical inventory number: 220-941-2
DTXSIDUS EPA chemical ID: DTXSID2029246
DTXCIDUS EPA compound ID: DTXCID909246

IUPAC: Triethoxy(octyl)silane
Molecular formula: C14H32O3Si
Molecular weight: 276.492 g/mol

Measured properties

Appearance: Liquid, Dry Powder · Colorless liquid, [Alfa Aesar MSDS]
Initial boiling point and range: 259.6 ℃
Flash point: 100 ℃(c.c.)
Vapour pressure: 0 ㎩ (@ 25 ℃)
Water solubility: 0.13 ㎎/ℓ
Vapour density: 9.54
Relative density: 0.88 (@ 20 ℃)
n-Octanol/water partition coefficient (Kow): 1.1 (@ 20 ℃)
Auto-ignition temperature: 211 ℃ (@968.7-973.8 hPa)
Molecular weight: 276.49

Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.

Source: PubChem · KOSHA safety data sheets (Korea)

What products actually use it for

What the 41 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.

Waterproofing agent9
Binder7
Surface modifier4
Adhesion/cohesion promoter4
Sealant (barrier)3
Processing aids not otherwise specified3
Impregnation agent2
Intermediate2

7 other uses

Stabilizing agent1
Dispersing agent1
Corrosion inhibitor1
Chemical reaction regulator1
Thickening agent1
Hardener1
Wetting agent (non-aqueous)1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

5 skin studies and 2 eye studies are on record.

Classed as highly irritating2Classed as moderate1Classed as low1

The studies disagree (the most common conclusion covers 50%), so they do not establish that this ingredient is irritating. These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 7 studies

Category 6.3A (Category 2)
Skin Irritation · Read Across
Moderate or Mild Irritation
skin irritation: in vivo · Screening · other guideline: FDA Handbook, Appraisal of the Safety of Chemicals in Foods, Drugs and Cosmetics, FDA (1959) p 47. according to
Severe Irritation
skin irritation: in vivo · Screening · other guideline: based on EPA TSCA Health Effects Test Guidelines. according to
Not likely to be sensitizing
skin sensitisation: in vivo (non-LLNA) · Screening · according to OECD Guideline 406 (Skin Sensitisation)
Severe Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) according to
Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · other guideline: FDA Handbook, Appraisal of the Safety of Chemicals in Foods, Drugs and Cosmetics, FDA (1959) p 49. according to
Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to