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Silanes and silicones

Tributylchlorosilane

Also known as Silane, tributylchloro-, Chlorotributylsilane, tributyl(chloro)silane

CAS 995-45-9Formula C12H27ClSiMolar mass 234.89 g/molEC 213-627-1
GHS signal word: Danger. Pictograms: Corrosive 2 suppliers listed
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Tributylchlorosilane chemical structure, C12H27ClSi, CAS 995-45-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
995-45-9
Formula
C12H27ClSi
Molar mass
234.89 g/mol
EC number
213-627-1
HS code
293190
Category
Silanes and silicones

What is Tributylchlorosilane?

Plain description, key identifiers and synonyms

Tributylchlorosilane is a chemical substance with the molecular formula C12H27ClSi and a molar mass of 234.89 g/mol. Its CAS registry number is 995-45-9. The IUPAC name is tributyl(chloro)silane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
tributyl(chloro)silane
CAS number
995-45-9 CAS number cross-checked
EC number
213-627-1
Molecular formula
C12H27ClSi
UNII
CX2EDU6MJ7
MDL number
MFCD00000509
InChIKey
JSQJUDVTRRCSRU-UHFFFAOYSA-N
InChI
InChI=1S/C12H27ClSi/c1-4-7-10-14(13,11-8-5-2)12-9-6-3/h4-12H2,1-3H3
SMILES (canonical and isomeric)
CCCC[Si](CCCC)(CCCC)Cl

Synonyms

  • Silane, tributylchloro-
  • Chlorotributylsilane
  • tributyl(chloro)silane
  • Chlorotri-n-butylsilane
  • Tri-N-butylchlorosilane
  • Tributylsilyl chloride
  • tri-n-butylchlorosilane(chlorotri-n-butylsilane)
  • tributylchloro-silan
  • tributyl(chloro)silane,
  • chloro-tri-n-butylsilane
  • chloro -tri-n-butylsilane
  • Chlorotributylsilane, 97%

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
234.89 g/molcalc.
Exact mass
234.1571 Dacalc.
LogP (octanol/water)
5.57calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
9calc.
Heavy atoms
14calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (1 violation)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

Hazard statements

  • H314Causes severe skin burns and eye damage.
Precautionary statements (12)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • 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).
  • P363Wash contaminated clothing before reuse.
  • 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

Tributylchlorosilane suppliers

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All 2 suppliers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

2 suppliers in 2 countries

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Tributylchlorosilane 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

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

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 Tributylchlorosilane 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 Tributylchlorosilane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Tributylchlorosilane?

Tributylchlorosilane is a chemical substance with the molecular formula C12H27ClSi and a molar mass of 234.89 g/mol. Its CAS registry number is 995-45-9. The IUPAC name is tributyl(chloro)silane.

What is the CAS number of Tributylchlorosilane?

The CAS registry number of Tributylchlorosilane is 995-45-9.

What is the molecular formula and weight of Tributylchlorosilane?

The molecular formula of Tributylchlorosilane is C12H27ClSi and its molar mass is 234.89 g/mol.

Is Tributylchlorosilane hazardous?

Tributylchlorosilane carries the GHS signal word "Danger". Main hazards: 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 Tributylchlorosilane?

Tributylchlorosilane 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 Tributylchlorosilane?

CompoundList lists 2 suppliers of Tributylchlorosilane in 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 Tributylchlorosilane?

Suppliers quote Tributylchlorosilane 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 Tributylchlorosilane

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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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