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Silanes and silicones

Tributoxymethylsilane

Also known as tributoxy(methyl)silane, Tributyloxymethylsilane, methyltributoxysilane

CAS 5581-68-0Formula C13H30O3SiMolar mass 262.47 g/molEC 226-980-1
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Tributoxymethylsilane chemical structure, C13H30O3Si, CAS 5581-68-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
5581-68-0
Formula
C13H30O3Si
Molar mass
262.47 g/mol
EC number
226-980-1
HS code
293190
Category
Silanes and silicones

What is Tributoxymethylsilane?

Plain description, key identifiers and synonyms

Tributoxymethylsilane is a chemical substance with the molecular formula C13H30O3Si and a molar mass of 262.47 g/mol. Its CAS registry number is 5581-68-0. The IUPAC name is tributoxy(methyl)silane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
tributoxy(methyl)silane
CAS number
5581-68-0 CAS number cross-checked
EC number
226-980-1
Molecular formula
C13H30O3Si
InChIKey
GYZQBXUDWTVJDF-UHFFFAOYSA-N
InChI
InChI=1S/C13H30O3Si/c1-5-8-11-14-17(4,15-12-9-6-2)16-13-10-7-3/h5-13H2,1-4H3
SMILES (canonical and isomeric)
CCCCO[Si](C)(OCCCC)OCCCC

Synonyms

  • tributoxy(methyl)silane
  • Tributyloxymethylsilane
  • methyltributoxysilane
  • Methyl tributoxysilane

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
262.47 g/molcalc.
Exact mass
262.1964 Dacalc.
LogP (octanol/water)
4.01calc.
Topological polar surface area
27.69 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
12calc.
Heavy atoms
17calc.
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

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.

Tributoxymethylsilane suppliers

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Tributoxymethylsilane 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

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

Frequently asked questions

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

What is Tributoxymethylsilane?

Tributoxymethylsilane is a chemical substance with the molecular formula C13H30O3Si and a molar mass of 262.47 g/mol. Its CAS registry number is 5581-68-0. The IUPAC name is tributoxy(methyl)silane.

What is the CAS number of Tributoxymethylsilane?

The CAS registry number of Tributoxymethylsilane is 5581-68-0.

What is the molecular formula and weight of Tributoxymethylsilane?

The molecular formula of Tributoxymethylsilane is C13H30O3Si and its molar mass is 262.47 g/mol.

What is Tributoxymethylsilane used for?

Known uses and roles of Tributoxymethylsilane include waterproofing agents in construction chemicals.

Is Tributoxymethylsilane hazardous?

No GHS hazard classification for Tributoxymethylsilane 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 Tributoxymethylsilane?

Tributoxymethylsilane 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 Tributoxymethylsilane?

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

What is the price of Tributoxymethylsilane?

Suppliers quote Tributoxymethylsilane 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 Tributoxymethylsilane

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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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