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Silanes and silicones

Dimesityldichlorosilane

Also known as Dichloro-bis(2,4,6-trimethylphenyl)silane, Dichlorodimesitylsilane, dichlorobis(2,4,6-trimethylphenyl)silane

CAS 5599-27-9Formula C18H22Cl2SiMolar mass 337.37 g/molEC 696-060-6
GHS signal word: Danger. Pictograms: Corrosive
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Dimesityldichlorosilane chemical structure, C18H22Cl2Si, CAS 5599-27-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
5599-27-9
Formula
C18H22Cl2Si
Molar mass
337.37 g/mol
EC number
696-060-6
HS code
293190
Category
Silanes and silicones

What is Dimesityldichlorosilane?

Plain description, key identifiers and synonyms

Dimesityldichlorosilane is a chemical substance with the molecular formula C18H22Cl2Si and a molar mass of 337.37 g/mol. Its CAS registry number is 5599-27-9. The IUPAC name is dichloro-bis(2,4,6-trimethylphenyl)silane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dichloro-bis(2,4,6-trimethylphenyl)silane
CAS number
5599-27-9 CAS number cross-checked
EC number
696-060-6
Molecular formula
C18H22Cl2Si
MDL number
MFCD00054797
InChIKey
RUSBLLCPBKKDKQ-UHFFFAOYSA-N
InChI
InChI=1S/C18H22Cl2Si/c1-11-7-13(3)17(14(4)8-11)21(19,20)18-15(5)9-12(2)10-16(18)6/h7-10H,1-6H3
SMILES (canonical and isomeric)
CC1=CC(=C(C(=C1)C)[Si](C2=C(C=C(C=C2C)C)C)(Cl)Cl)C

Synonyms

  • Dichloro-bis(2,4,6-trimethylphenyl)silane
  • Dichlorodimesitylsilane
  • dichlorobis(2,4,6-trimethylphenyl)silane
  • C18H22Cl2Si

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
337.37 g/molcalc.
Exact mass
336.0868 Dacalc.
LogP (octanol/water)
4.57calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
2calc.
Heavy atoms
21calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.33calc.
Formal charge
0calc.
Stereocentres
0calc.
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, c1ccc([SiH2]c2ccccc2)cc1

c1ccc([SiH2]c2ccccc2)cc1

2 rings, 13 atoms, the Diphenylsilane ring system.

715 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.

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

Dimesityldichlorosilane suppliers

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Dimesityldichlorosilane 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

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

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

Frequently asked questions

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

What is Dimesityldichlorosilane?

Dimesityldichlorosilane is a chemical substance with the molecular formula C18H22Cl2Si and a molar mass of 337.37 g/mol. Its CAS registry number is 5599-27-9. The IUPAC name is dichloro-bis(2,4,6-trimethylphenyl)silane.

What is the CAS number of Dimesityldichlorosilane?

The CAS registry number of Dimesityldichlorosilane is 5599-27-9.

What is the molecular formula and weight of Dimesityldichlorosilane?

The molecular formula of Dimesityldichlorosilane is C18H22Cl2Si and its molar mass is 337.37 g/mol.

Is Dimesityldichlorosilane hazardous?

Dimesityldichlorosilane 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 Dimesityldichlorosilane?

Dimesityldichlorosilane 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 Dimesityldichlorosilane?

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What is the price of Dimesityldichlorosilane?

Suppliers quote Dimesityldichlorosilane 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 Dimesityldichlorosilane

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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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