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Silanes and silicones

Silane, triethoxyhexyl-

Also known as triethoxy(hexyl)silane, Hexyltriethoxysilane, n-Hexyltriethoxysilane

CAS 18166-37-5Formula C12H28O3SiMolar mass 248.44 g/molEC 605-940-0
GHS signal word: Warning. Pictograms: Harmful or irritant 5 suppliers listed
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Silane, triethoxyhexyl- chemical structure, C12H28O3Si, CAS 18166-37-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
18166-37-5
Formula
C12H28O3Si
Molar mass
248.44 g/mol
Physical form
Liquid
HS code
293190
Category
Silanes and silicones
Illustrative photo, assorted laboratory chemical bottles and jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Silane, triethoxyhexyl-?

Plain description, key identifiers and synonyms

Silane, triethoxyhexyl- is a chemical substance with the molecular formula C12H28O3Si and a molar mass of 248.44 g/mol. Its CAS registry number is 18166-37-5. The IUPAC name is triethoxy(hexyl)silane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
triethoxy(hexyl)silane
CAS number
18166-37-5 CAS number cross-checkedOther or deprecated CAS: 158808-35-6
EC number
605-940-0
Molecular formula
C12H28O3Si
MDL number
MFCD00087744
InChIKey
WUMSTCDLAYQDNO-UHFFFAOYSA-N
InChI
InChI=1S/C12H28O3Si/c1-5-9-10-11-12-16(13-6-2,14-7-3)15-8-4/h5-12H2,1-4H3
SMILES (canonical and isomeric)
CCCCCC[Si](OCC)(OCC)OCC

Synonyms

  • triethoxy(hexyl)silane
  • Hexyltriethoxysilane
  • n-Hexyltriethoxysilane
  • Triethoxyhexylsilane

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Liquidexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
248.44 g/molcalc.
Exact mass
248.1808 Dacalc.
LogP (octanol/water)
3.62calc.
Topological polar surface area
27.69 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
11calc.
Heavy atoms
16calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Silane, triethoxyhexyl- suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 5 suppliers
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Where suppliers are based

5 suppliers in 3 countries

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Silane, triethoxyhexyl- price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Adhesion/cohesion promoter.

Functional uses

  • Adhesion/cohesion promoter
  • Surface modifier

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce, Regulatory flags: Added by a premanufacture notice

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Silane, triethoxyhexyl- is traded under.

HS 2931.90Indicative HS code

Organo-inorganic compounds, other than tetramethyl lead, tetraethyl lead, tributyltin compounds…

World exports in 2024
$3.97B
+5.3% vs 2023, imports $3.93B
2019 to 2024
Top exporters
  1. China28.3%
  2. United States15.6%
  3. Germany15.1%
Top importers
  1. United States14.6%
  2. China13.0%
  3. South Korea8.5%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Silane, triethoxyhexyl- is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Silane, triethoxyhexyl-, based on the data on this page

What is Silane, triethoxyhexyl-?

Silane, triethoxyhexyl- is a chemical substance with the molecular formula C12H28O3Si and a molar mass of 248.44 g/mol. Its CAS registry number is 18166-37-5. The IUPAC name is triethoxy(hexyl)silane.

What is the CAS number of Silane, triethoxyhexyl-?

The CAS registry number of Silane, triethoxyhexyl- is 18166-37-5. Other or deprecated CAS numbers: 158808-35-6.

What is the molecular formula and weight of Silane, triethoxyhexyl-?

The molecular formula of Silane, triethoxyhexyl- is C12H28O3Si and its molar mass is 248.44 g/mol.

What is Silane, triethoxyhexyl- used for?

Industrial uses: Adhesion/cohesion promoter.

Is Silane, triethoxyhexyl- hazardous?

Silane, triethoxyhexyl- carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Silane, triethoxyhexyl-?

Silane, triethoxyhexyl- is usually classified under HS code 293190 (X. ORGANO-INORGANIC COMPOUNDS, HETEROCYCLIC COMPOUNDS, NUCLEIC ACIDS AND THEIR SALTS…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Silane, triethoxyhexyl-?

CompoundList lists 5 suppliers of Silane, triethoxyhexyl- in United States, China and United Kingdom. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Silane, triethoxyhexyl-?

Suppliers quote Silane, triethoxyhexyl- on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Silane, triethoxyhexyl-

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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