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Silanes and silicones

Hexyltrichlorosilane

Also known as Trichloro(hexyl)silane, Trichlorohexylsilane, n-Hexyltrichlorosilane

CAS 928-65-4Formula C6H13Cl3SiMolar mass 219.62 g/molEC 213-178-1
GHS signal word: Danger. Pictograms: Corrosive, Acute toxicity (severe) 4 suppliers listed
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Hexyltrichlorosilane chemical structure, C6H13Cl3Si, CAS 928-65-4
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless liquid
Boiling point
190 °C
Density
1.1100 g/cm³ at 20 °C
HS code
293190
Category
Silanes and silicones
UN number
UN 1784
Illustrative photo, a 1000 litre IBC tote of clear liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Hexyltrichlorosilane?

Plain description, key identifiers and synonyms

Hexyltrichlorosilane is a colorless liquid with a pungent odor. It is decomposed by moist air or water to hydrochloric acid with evolution of heat. It is corrosive to metals and tissue. It is used as a chemical intermediate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
trichloro(hexyl)silane
CAS number
928-65-4 CAS number cross-checked
EC number
213-178-1
Molecular formula
C6H13Cl3Si
UNII
BJ5Z98918X
MDL number
MFCD00013606
InChIKey
LFXJGGDONSCPOF-UHFFFAOYSA-N
InChI
InChI=1S/C6H13Cl3Si/c1-2-3-4-5-6-10(7,8)9/h2-6H2,1H3
SMILES (canonical and isomeric)
CCCCCC[Si](Cl)(Cl)Cl

Synonyms

  • Trichloro(hexyl)silane
  • Trichlorohexylsilane
  • n-Hexyltrichlorosilane
  • Silane, trichlorohexyl-
  • Silane, hexyltrichloro-
  • 1-hexyltrichlorosilane
  • 1,1,1-trichloro-1-silaheptane
  • nHexyltrichlorosilane
  • Trichloronhexylsilane
  • Silane, hexyltrichloro
  • Silane, trichlorohexyl
  • Trichloro(hexyl)silane, 97%
  • Hexyltrichlorosilane [UN1784] [Corrosive]
  • Hexyltrichlorosilane, 1,1,1-Trichloro-1-silaheptane, 1-Hexyltrichlorosilane

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

Appearance
Colorless liquidexp.
Odour
Sharp penetrating odorexp.
Boiling point
190 °Cexp.
Density
1.1100 g/cm³ at 20 °Cexp.

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
219.62 g/molcalc.
Exact mass
217.9852 Dacalc.
LogP (octanol/water)
4.22calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
5calc.
Heavy atoms
10calc.
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
Danger
GHS05: Corrosive
Corrosive
GHS06: Acute toxicity (severe)
Acute toxicity (severe)

Hazard statements

  • H301Toxic if swallowed.
  • H311Toxic in contact with skin.
  • H314Causes severe skin burns and eye damage.
  • H331Toxic if inhaled.
Precautionary statements (21)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P352If on skin: Wash with plenty of water.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P363Wash contaminated clothing 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.
UN number
UN 1784
Transport hazard class
8
Packing group
II

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

Hexyltrichlorosilane suppliers

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

All 4 suppliers
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Where suppliers are based

4 suppliers in 3 countries

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Hexyltrichlorosilane price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Chemical intermediate.

Industrial uses: Intermediate.

Functional uses

  • Adhesion/cohesion promoter
  • Wetting agent (non-aqueous)

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Hexyltrichlorosilane 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 Hexyltrichlorosilane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Hexyltrichlorosilane, based on the data on this page

What is Hexyltrichlorosilane?

Hexyltrichlorosilane is a colorless liquid with a pungent odor. It is decomposed by moist air or water to hydrochloric acid with evolution of heat. It is corrosive to metals and tissue. It is used as a chemical intermediate.

What is the CAS number of Hexyltrichlorosilane?

The CAS registry number of Hexyltrichlorosilane is 928-65-4.

What is the molecular formula and weight of Hexyltrichlorosilane?

The molecular formula of Hexyltrichlorosilane is C6H13Cl3Si and its molar mass is 219.62 g/mol.

What is Hexyltrichlorosilane used for?

Chemical intermediate. Industrial uses: Intermediate.

Is Hexyltrichlorosilane hazardous?

Hexyltrichlorosilane carries the GHS signal word "Danger". Main hazards: toxic if swallowed, toxic in contact with skin, causes severe skin burns and eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Hexyltrichlorosilane?

Hexyltrichlorosilane 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 Hexyltrichlorosilane?

CompoundList lists 4 suppliers of Hexyltrichlorosilane in United States, Germany and Japan. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Hexyltrichlorosilane?

Suppliers quote Hexyltrichlorosilane 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 Hexyltrichlorosilane

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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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