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Hexamethylsilirane

Also known as hexamethyl-1-silacyclopropane

CAS 55644-09-2Formula C8H18SiMolar mass 142.32 g/mol
Hexamethylsilirane chemical structure, C8H18Si, CAS 55644-09-2
2D chemical structure

Key facts

What buyers check first

CAS number
55644-09-2
Formula
C8H18Si
Molar mass
142.32 g/mol
HS code
293190
Category
Silanes and silicones

What is Hexamethylsilirane?

Plain description, key identifiers and synonyms

Hexamethylsilirane is a chemical substance with the molecular formula C8H18Si and a molar mass of 142.32 g/mol. Its CAS registry number is 55644-09-2. The IUPAC name is 1,1,2,2,3,3-hexamethylsilirane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,1,2,2,3,3-hexamethylsilirane
CAS number
55644-09-2 CAS number cross-checked
Molecular formula
C8H18Si
InChIKey
UAOKPUQWJBGRBK-UHFFFAOYSA-N
InChI
InChI=1S/C8H18Si/c1-7(2)8(3,4)9(7,5)6/h1-6H3
SMILES (canonical and isomeric)
CC1(C([Si]1(C)C)(C)C)C

Synonyms

  • hexamethyl-1-silacyclopropane

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
142.32 g/molcalc.
Exact mass
142.1178 Dacalc.
LogP (octanol/water)
3.27calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
9calc.
Rings
1calc.
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.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1C[SiH2]1

C1C[SiH2]1

1 ring, 3 atoms, the Silacyclopropane ring system.

6 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Hexamethylsilirane suppliers

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

No supplier listings yet

Post one free request and suppliers who make or trade Hexamethylsilirane can send you quotes. Your contact details stay private until you accept a quote.

Hexamethylsilirane 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

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

Frequently asked questions

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

What is Hexamethylsilirane?

Hexamethylsilirane is a chemical substance with the molecular formula C8H18Si and a molar mass of 142.32 g/mol. Its CAS registry number is 55644-09-2. The IUPAC name is 1,1,2,2,3,3-hexamethylsilirane.

What is the CAS number of Hexamethylsilirane?

The CAS registry number of Hexamethylsilirane is 55644-09-2.

What is the molecular formula and weight of Hexamethylsilirane?

The molecular formula of Hexamethylsilirane is C8H18Si and its molar mass is 142.32 g/mol.

Is Hexamethylsilirane hazardous?

No GHS hazard classification for Hexamethylsilirane is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Hexamethylsilirane?

Hexamethylsilirane 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 Hexamethylsilirane?

Post a free request on CompoundList and suppliers of Hexamethylsilirane will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Hexamethylsilirane?

Suppliers quote Hexamethylsilirane 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 Hexamethylsilirane

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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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