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Silanes and silicones

Triethoxypropylsilane

Also known as n-Propyltriethoxysilane, Propyltriethoxysilane, Silane, triethoxypropyl-

CAS 2550-02-9Formula C9H22O3SiMolar mass 206.36 g/molEC 219-842-7
GHS signal word: Warning. Pictograms: Flammable, Harmful or irritant 9 suppliers listed
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Triethoxypropylsilane chemical structure, C9H22O3Si, CAS 2550-02-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
2550-02-9
Formula
C9H22O3Si
Molar mass
206.36 g/mol
EC number
219-842-7
HS code
293190
Category
Silanes and silicones

What is Triethoxypropylsilane?

Plain description, key identifiers and synonyms

Triethoxypropylsilane is a chemical substance with the molecular formula C9H22O3Si and a molar mass of 206.36 g/mol. Its CAS registry number is 2550-02-9. The IUPAC name is triethoxy(propyl)silane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
triethoxy(propyl)silane
CAS number
2550-02-9 CAS number cross-checkedOther or deprecated CAS: 160876-30-2
EC number
219-842-7
Molecular formula
C9H22O3Si
UNII
F17OTX9FG5
MDL number
MFCD00026756
InChIKey
NBXZNTLFQLUFES-UHFFFAOYSA-N
InChI
InChI=1S/C9H22O3Si/c1-5-9-13(10-6-2,11-7-3)12-8-4/h5-9H2,1-4H3
SMILES (canonical and isomeric)
CCC[Si](OCC)(OCC)OCC

Synonyms

  • n-Propyltriethoxysilane
  • Propyltriethoxysilane
  • Silane, triethoxypropyl-
  • Propyltriethoxysilane, silane, triethoxypropyl-
  • Triethoxy(propyl)silane
  • 1-(Triethoxysilyl)propane
  • Triethoxy(propyl)silane #
  • n-Propyltriethoxysilane, 97%
  • n-Propyltriethoxysilane, >=98%, deposition grade
  • Propyltriethoxy silane, Propyltriethoxysilane, Si 203, Silane, triethoxypropyl-, Silar 1249, Triethoxy(Propyl)Silane

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
206.36 g/molcalc.
Exact mass
206.1338 Dacalc.
LogP (octanol/water)
2.44calc.
Topological polar surface area
27.69 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
8calc.
Heavy atoms
13calc.
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
Warning
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H226Flammable liquid and vapour.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (25)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • 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

Triethoxypropylsilane suppliers

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

All 9 suppliers
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Where suppliers are based

9 suppliers in 2 countries

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Triethoxypropylsilane 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

Functional uses

  • Hardener
  • Processing aids not otherwise specified

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

Frequently asked questions

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

What is Triethoxypropylsilane?

Triethoxypropylsilane is a chemical substance with the molecular formula C9H22O3Si and a molar mass of 206.36 g/mol. Its CAS registry number is 2550-02-9. The IUPAC name is triethoxy(propyl)silane.

What is the CAS number of Triethoxypropylsilane?

The CAS registry number of Triethoxypropylsilane is 2550-02-9. Other or deprecated CAS numbers: 160876-30-2.

What is the molecular formula and weight of Triethoxypropylsilane?

The molecular formula of Triethoxypropylsilane is C9H22O3Si and its molar mass is 206.36 g/mol.

What is Triethoxypropylsilane used for?

Known uses and roles of Triethoxypropylsilane include waterproofing agents in construction chemicals, hardener and processing aids not otherwise specified.

Is Triethoxypropylsilane hazardous?

Triethoxypropylsilane carries the GHS signal word "Warning". Main hazards: flammable liquid and vapour, causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Triethoxypropylsilane?

Triethoxypropylsilane 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 Triethoxypropylsilane?

CompoundList lists 9 suppliers of Triethoxypropylsilane in China and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Triethoxypropylsilane?

Suppliers quote Triethoxypropylsilane 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 Triethoxypropylsilane

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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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