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Silanes and silicones

Hexamethoxydisilylethane

Also known as 1,2-Bis(trimethoxysilyl)ethane, 3,3,6,6-Tetramethoxy-2,7-dioxa-3,6-disilaoctane, 1,2-Ethylenebis(trimethoxysilane)

CAS 18406-41-2Formula C8H22O6Si2Molar mass 270.43 g/molEC 242-285-6
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Harmful or irritant, Serious health hazard 18 suppliers listed
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Hexamethoxydisilylethane chemical structure, C8H22O6Si2, CAS 18406-41-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
18406-41-2
Formula
C8H22O6Si2
Molar mass
270.43 g/mol
EC number
242-285-6
HS code
293190
Category
Silanes and silicones

What is Hexamethoxydisilylethane?

Plain description, key identifiers and synonyms

Hexamethoxydisilylethane is a chemical substance with the molecular formula C8H22O6Si2 and a molar mass of 270.43 g/mol. Its CAS registry number is 18406-41-2. The IUPAC name is trimethoxy(2-trimethoxysilylethyl)silane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
trimethoxy(2-trimethoxysilylethyl)silane
CAS number
18406-41-2 CAS number cross-checkedOther or deprecated CAS: 168259-18-5
EC number
242-285-6
Molecular formula
C8H22O6Si2
UNII
LJZ836PHD3
MDL number
MFCD00053672
InChIKey
JCGDCINCKDQXDX-UHFFFAOYSA-N
InChI
InChI=1S/C8H22O6Si2/c1-9-15(10-2,11-3)7-8-16(12-4,13-5)14-6/h7-8H2,1-6H3
SMILES (canonical and isomeric)
CO[Si](CC[Si](OC)(OC)OC)(OC)OC

Synonyms

  • 1,2-Bis(trimethoxysilyl)ethane
  • 3,3,6,6-Tetramethoxy-2,7-dioxa-3,6-disilaoctane
  • 1,2-Ethylenebis(trimethoxysilane)
  • 2,7-Dioxa-3,6-disilaoctane, 3,3,6,6-tetramethoxy-
  • Dow corning X1-6145A
  • 1,4-Disilabutane, 1,1,1,4,4,4-hexamethoxy-
  • 4-04-00-04265 (Beilstein Handbook Reference)
  • Dow Corning X16145A
  • 1,2bis(trimethoxysilyl)ethane
  • 1,2Ethylenebis(trimethoxysilane)
  • 1,4Disilabutane, 1,1,1,4,4,4hexamethoxy
  • 3,3,6,6Tetramethoxy2,7dioxa3,6disilaoctane
  • 2,7Dioxa3,6disilaoctane, 3,3,6,6tetramethoxy
  • trimethoxy(2-trimethoxysilylethyl)silane
  • Ethylenebis(trimethoxysilane)
  • C8H22O6Si2
  • 1,2-Bis(trimethoxylsilyl)ethane
  • 1,2-Bis(trimethoxysilyl)ethane, 96%
  • 1,1,1,4,4,4-Hexamethoxy-1,4-disilabutane

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
270.43 g/molcalc.
Exact mass
270.0955 Dacalc.
LogP (octanol/water)
0.74calc.
Topological polar surface area
55.38 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
9calc.
Heavy atoms
16calc.
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
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H301Toxic if swallowed.
  • H302Harmful if swallowed.
  • H315Causes skin irritation.
  • H330Fatal if inhaled.
  • H341Suspected of causing genetic defects.
  • H412Harmful to aquatic life with long lasting effects.
Precautionary statements (22)
  • P203Obtain, read and follow all safety instructions before use.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P284In case of inadequate ventilation wear respiratory protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P316Get emergency medical help immediately.
  • P318If exposed or concerned, get medical advice.
  • P320Specific treatment is urgent (see supplemental first aid instructions on the label).
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it 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.

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

Hexamethoxydisilylethane suppliers

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

All 18 suppliers
18 of 18 offers

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

18 suppliers in 4 countries

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Hexamethoxydisilylethane 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

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

Frequently asked questions

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

What is Hexamethoxydisilylethane?

Hexamethoxydisilylethane is a chemical substance with the molecular formula C8H22O6Si2 and a molar mass of 270.43 g/mol. Its CAS registry number is 18406-41-2. The IUPAC name is trimethoxy(2-trimethoxysilylethyl)silane.

What is the CAS number of Hexamethoxydisilylethane?

The CAS registry number of Hexamethoxydisilylethane is 18406-41-2. Other or deprecated CAS numbers: 168259-18-5.

What is the molecular formula and weight of Hexamethoxydisilylethane?

The molecular formula of Hexamethoxydisilylethane is C8H22O6Si2 and its molar mass is 270.43 g/mol.

Is Hexamethoxydisilylethane hazardous?

Hexamethoxydisilylethane carries the GHS signal word "Danger". Main hazards: toxic if swallowed, harmful if swallowed, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Hexamethoxydisilylethane?

Hexamethoxydisilylethane 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 Hexamethoxydisilylethane?

CompoundList lists 18 suppliers of Hexamethoxydisilylethane in China, United States, United Kingdom and Netherlands. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Hexamethoxydisilylethane?

Suppliers quote Hexamethoxydisilylethane 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 Hexamethoxydisilylethane

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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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