CompoundList

Trichloro(dichlorophenyl)silane

Also known as Dichlorophenyltrichlorosilane, Silane, (dichlorophenyl)trichloro-, Silane, trichloro(dichlorophenyl)-

Trichloro(dichlorophenyl)silane chemical structure, C6H7Cl5Si, CAS 27137-85-5
2D chemical structure

Key facts

What buyers check first

Appearance
Straw-colored liquid
Boiling point
260 °C
Density
1.562
Flash point
141 °C
Solubility
Sol in benzene, and perchloroethylene (mixture of isomers)
HS code
293190
Category
Silanes and silicones
UN number
UN 1766
Illustrative photo, 200 litre blue HDPE drums of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Trichloro(dichlorophenyl)silane?

Plain description, key identifiers and synonyms

Dichlorophenyltrichlorosilane is a straw colored liquid with a pungent odor. Material will burn though it may require some effort to ignite. It is decomposed by moisture or water to hydrochloric acid with evolution of heat. It is corrosive to metals and tissue. It is used as an intermediate for silicones.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
trichloro(phenyl)silane, dihydrochloride
CAS number
27137-85-5
EC number
248-254-3
Molecular formula
C6H7Cl5Si
InChIKey
QFLNHKMRCRBGOY-UHFFFAOYSA-N
InChI
InChI=1S/C6H5Cl3Si.2ClH/c7-10(8,9)6-4-2-1-3-5-6;;/h1-5H;2*1H
SMILES (canonical and isomeric)
C1=CC=C(C=C1)[Si](Cl)(Cl)Cl.Cl.Cl

Synonyms

  • Dichlorophenyltrichlorosilane
  • Silane, (dichlorophenyl)trichloro-
  • Silane, trichloro(dichlorophenyl)-
  • Benzene, dichloro(trichlorosilyl)
  • Silane, (dichlorophenyl)trichloro
  • Silane, trichloro(dichlorophenyl)
  • Dichloro phenyl trichloro silane
  • Silane,(dichlorophenyl)trichloro-
  • Dichlorophenyltrichlorosilane [UN1766] [Corrosive]

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
Straw-colored liquidexp.
Odour
Pungentexp.
Boiling point
260 °Cexp.
Density
1.562exp.
Flash point
141 °Cexp.
Solubility
Sol in benzene, and perchloroethylene (mixture of isomers)exp.
Vapour pressure
70 [mm Hg] @25 °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
284.47 g/molcalc.
Exact mass
281.876 Dacalc.
LogP (octanol/water)
3.39calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
1calc.
Heavy atoms
12calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
3calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

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.
UN number
UN 1766
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

Trichloro(dichlorophenyl)silane suppliers

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Uses and applications

What the substance is used for, by industry and function

Intermediate for silicones.

How it is made

The wide variety of organosilanes are most commonly prepared through reaction of inorganic and organochlorosilanes with Grignard reagents. The Grignard reagent is utilized to transfer organic groups to silicon. By varying the silane and organic moiety of the Grignard, a large number of organosilanes can be synthesized in good-to-excellent yields. In general this process is very versatile and more easily directed than direct process or disproportionation reactions. (Organosilanes)

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

Frequently asked questions

Quick answers about Trichloro(dichlorophenyl)silane, based on the data on this page

What is Trichloro(dichlorophenyl)silane?

Dichlorophenyltrichlorosilane is a straw colored liquid with a pungent odor. Material will burn though it may require some effort to ignite. It is decomposed by moisture or water to hydrochloric acid with evolution of heat. It is corrosive to metals and tissue. It is used as an intermediate for silicones.

What is the CAS number of Trichloro(dichlorophenyl)silane?

The CAS registry number of Trichloro(dichlorophenyl)silane is 27137-85-5.

What is the molecular formula and weight of Trichloro(dichlorophenyl)silane?

The molecular formula of Trichloro(dichlorophenyl)silane is C6H7Cl5Si and its molar mass is 284.47 g/mol.

What is Trichloro(dichlorophenyl)silane used for?

Intermediate for silicones.

Is Trichloro(dichlorophenyl)silane hazardous?

Trichloro(dichlorophenyl)silane 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 Trichloro(dichlorophenyl)silane?

Trichloro(dichlorophenyl)silane 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 Trichloro(dichlorophenyl)silane?

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What is the price of Trichloro(dichlorophenyl)silane?

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Guides for buyers

Practical guides that help when you source, ship or handle Trichloro(dichlorophenyl)silane

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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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