CompoundList
Sign in
Silanes and silicones

Tripropylsilane

Also known as tri-n-Propylsilane, Silane, tripropyl-, Silicon tri-n-propyl

CAS 998-29-8Formula C9H21SiMolar mass 157.35 g/molEC 213-649-1
GHS signal word: Warning. Pictograms: Flammable, Harmful or irritant
Get quotes Safety data
Tripropylsilane chemical structure, C9H21Si, CAS 998-29-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
998-29-8
Formula
C9H21Si
Molar mass
157.35 g/mol
Physical form
Liquid
HS code
293190
Category
Silanes and silicones
Illustrative photo, a closed 1000 litre IBC tote in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Tripropylsilane?

Plain description, key identifiers and synonyms

Tripropylsilane is a chemical substance with the molecular formula C9H21Si and a molar mass of 157.35 g/mol. Its CAS registry number is 998-29-8.

Identifiers

Registry numbers, names and line notations, tap to copy

CAS number
998-29-8 CAS number cross-checked
EC number
213-649-1
Molecular formula
C9H21Si
UNII
NNJ2F2HV9X
MDL number
MFCD00009358
InChIKey
MMYRBBZVCDXGHG-UHFFFAOYSA-N
InChI
InChI=1S/C9H21Si/c1-4-7-10(8-5-2)9-6-3/h4-9H2,1-3H3
SMILES (canonical and isomeric)
CCC[Si](CCC)CCC

Synonyms

  • tri-n-Propylsilane
  • Silane, tripropyl-
  • Silicon tri-n-propyl
  • 1-(Dipropylsilyl)propane
  • Tri-n-propyl silane
  • Tripropylsilane, 99%
  • Silane,tripropyl-Nsc96837Tripropylsilyl

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

Physical form
Liquidexp.

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
157.35 g/molcalc.
Exact mass
157.1413 Dacalc.
LogP (octanol/water)
3.71calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
6calc.
Heavy atoms
10calc.
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

Tripropylsilane 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 Tripropylsilane can send you quotes. Your contact details stay private until you accept a quote.

Request quotesSell this chemical

Tripropylsilane price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

Get latest price

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

Frequently asked questions

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

What is Tripropylsilane?

Tripropylsilane is a chemical substance with the molecular formula C9H21Si and a molar mass of 157.35 g/mol. Its CAS registry number is 998-29-8.

What is the CAS number of Tripropylsilane?

The CAS registry number of Tripropylsilane is 998-29-8.

What is the molecular formula and weight of Tripropylsilane?

The molecular formula of Tripropylsilane is C9H21Si and its molar mass is 157.35 g/mol.

Is Tripropylsilane hazardous?

Tripropylsilane 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 Tripropylsilane?

Tripropylsilane 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 Tripropylsilane?

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

What is the price of Tripropylsilane?

Suppliers quote Tripropylsilane 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 Tripropylsilane

Get quotes for Tripropylsilane

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Tripropylsilane
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Tripropylsilane with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/tripropylsilane-998-29-8" title="Tripropylsilane structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Silanes and silicones or HS code 293190

Price on request
Free quotes, contact stays private
Get quotes