Basic information
- CAS
2943-75-1- Standard SMILES
CCCCCCCC[Si](OCC)(OCC)OCC- InChIKey
MSRJTTSHWYDFIU-UHFFFAOYSA-N- Molecular formula
- C14H32O3Si
- Average molar mass
- 276.49 g/mol
- Monoisotopic mass
- 276.21207141
Overview
Octyltriethoxysilane is an organosilicon compound.
Names & identifiers
- Preferred name
- Octyltriethoxysilane
- IUPAC
- triethoxy(octyl)silane
- English name
- Triethoxyoctylsilane
- Molecular formula
- C14H32O3Si
- Molecular weight
- 276.49
Names & synonyms
TriethoxyoctylsilaneTriethoxy(octyl)silane2943-75-1OctyltriethoxysilanetriethoxycaprylylsilaneSilane, triethoxyoctyl-Octyl(triethoxy)silaneDynasylan OCTEOProsil 9202Silquest A 137Prosil 9234A 137 (coupling agent)
Show more names
N-OCTYLTRIETHOXYSILANEOCTEOTRIETHOXY-N-OCTYLSILANEA 137U-222y9187CO9835
CaprylyltriethoxysilaneDTXSID2029246LDC331P08ENSC-42964Y 9187DTXCID909246RefChem:899462220-941-2
Database identifiers
- CAS
2943-75-1- PubChem CID
- 76262
- DTXSID
DTXSID2029246- ChEMBL
CHEMBL3185786- ChEBI
CHEBI:136012- UNII
- LDC331P08E
- EC Number
- 220-941-2
- Nikkaji
- J183.124K
Properties
Computed structural properties
- Topological polar surface area
- 27.7 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 3
- Rotatable bonds
- 13
- Heavy atoms
- 18
- Formal charge
- 0
- Complexity
- 159
Experimental & physicochemical properties
Chemical ClassesMetals -> Metalloid Compounds (Silicon)
DrugsPharmaceuticals -> Listed in ZINC15
Cosmetics
Cosmetic ingredients (Oleth-30) -> CIR (Cosmetic Ingredient Review)
Cosmetic ingredients (Triethoxycaprylylsilane) -> CIR (Cosmetic Ingredient Review)
Cleansing; Emulsifying
SpringerMaterials PropertiesViscosity
Physical Description
Liquid; Dry Powder; Liquid
Colorless liquid; [Alfa Aesar MSDS]
Physicochemical properties
- Melting point
- -40 °C · <-40°C
- Boiling point
- 84 · 84-85 °C0.5 mm Hg(lit.)
- Density
- 0.88 g/mL · 0.88 g/mL at 25 °C(lit.)
- vapor pressure
- 0.1 hPa · 0.1 hPa (20 °C)
- refractive index
- 20 · n20/D 1.417(lit.)
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 7.9% (59 of 750) of reports.
Warning
H226 (14%): Flammable liquid and vapor [Warning Flammable liquids]
P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P271, P273, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P391, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 750 reports by companies from 16 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard information
Regulatory Information
Chemical: Silane, triethoxyoctyl-
Silane, triethoxyoctyl- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Silane, triethoxyoctyl- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
Status: Active Update: 12-05-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/14592
Triethoxyoctylsilane: Does not have an individual approval but may be used under an appropriate group standard
Other Safety InformationIMAP assessments - Silane, triethoxyoctyl-: Human health tier I assessment
Hazards SummaryOral LD50 (rat) = 10.06 mL/kg; Dermal LD50 (rabbit) = 5.91 mL/kg; [RTECS] A skin and strong eye irritant; [Alfa Aesar MSDS] See Isobutyltrimethoxysilane.
Hazard Classes and CategoriesFlam. Liq. 3 (14%)
Toxicology
Chemistry & industry
Uses & manufacturing
Uses
CIR ingredient: Oleth-30
CIR ingredient: Triethoxycaprylylsilane
Reacted with titanium dioxide for use as polymer filler with food-contact applications; [ExPub: EFSA] Used to make masonry treatment products, coatings, adhesives-sealants, non-metal surface treatment products, polymers, tires, chemicals, rubber products, in electronics, mass hydrophobation, and as a laboratory reagent; [ExPub: ECHA REACH Registrations]
Painting (Pigments, Binders, and Biocides) [Category: Paint]
U.S. Production2023: 10,000,000 - <50,000,000 lb
Consumer UsesBinder
Industry UsesSurface modifier
Household ProductsInformation on 52 consumer products that contain Octyltriethoxysilane in the following categories is provided:
Use ClassificationCosmetics -> Cleansing; Emulsifying
General Manufacturing Information
Synthetic Rubber Manufacturing
Silane, triethoxyoctyl-: ACTIVE
Applications
DescriptionTriethoxyoctylsilane is a monomeric medium-chain alkylfunctional silane. It is a clear colourless liquid and soluble in common non-polar organic solvent. Triethoxyoctylsilane can be used as a surface modifier to generate hydrophobicity (e.g. on concrete, glass, inorganic pigments, or mineral fillers). When diluted with an appropriate solvent, it can be used in the formulation of water repellent products. Upon proper application, the formulated product will penetrate and provide water repellency by chemically reacting with the cementitious substrate. Treated substrates are hydrophobic and retain their original appearance.
Related reactions
9 records
Compound notes
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