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Metals, alloys and elements

Trisilane

Also known as Silicopropane, Trisilicopropane, Trisilicane

CAS 7783-26-8Formula Si3Molar mass 84.26 g/molEC 616-514-9
GHS signal word: Danger. Pictograms: Flammable, Harmful or irritant 2 suppliers listed
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Trisilane chemical structure, Si3, CAS 7783-26-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
7783-26-8
Formula
Si3
Molar mass
84.26 g/mol
EC number
616-514-9
HS code
280469
Category
Metals, alloys and elements

What is Trisilane?

Plain description, key identifiers and synonyms

Trisilane is a chemical substance with the molecular formula Si3 and a molar mass of 84.26 g/mol. Its CAS registry number is 7783-26-8.

Identifiers

Registry numbers, names and line notations, tap to copy

CAS number
7783-26-8 CAS number cross-checkedOther or deprecated CAS: 134303-33-6, 90968-71-1
EC number
616-514-9
Molecular formula
Si3
UNII
1T3A75Z4ZL
InChIKey
YBILFZWSTSXODU-UHFFFAOYSA-N
InChI
InChI=1S/Si3/c1-3-2
SMILES (canonical and isomeric)
[Si]=[Si]=[Si]

Synonyms

  • Silicopropane
  • Trisilicopropane
  • Trisilicane
  • Trisilicon octahydride
  • Silcore
  • Silicon hydride (si3h8)
  • Trisil-1-ene
  • Si3H8

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
84.26 g/molcalc.
Exact mass
83.9308 Dacalc.
LogP (octanol/water)
-1.14calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
3calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H250Catches fire spontaneously if exposed to air.
  • H261In contact with water releases flammable gas.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (24)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P222Do not allow contact with air.
  • P231Handle and store contents under inert gas.
  • P231 + P232Handle and store contents under inert gas. Protect from moisture.
  • P233Keep container tightly closed.
  • 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 + P335 + P334If on skin: Brush off loose particles from skin. Immerse in cool water or wrap in wet bandages.
  • P302 + P352If on skin: Wash with plenty of water.
  • 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.
  • P402 + P404Store in a dry place. Store in a closed container.
  • 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

Trisilane suppliers

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

All 2 suppliers

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

2 suppliers in 2 countries

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Trisilane 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.

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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, Regulatory flags: Added by a premanufacture notice

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Trisilane is traded under.

HS 2804.69Indicative HS code

Silicon, other

World exports in 2024
$3.38B
−3.4% vs 2023, imports $3.51B
2019 to 2024
Top exporters
  1. China39.5%
  2. Brazil13.8%
  3. Norway * partner reported11.4%
Top importers
  1. Germany16.8%
  2. United States13.6%
  3. Japan11.1%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Trisilane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Trisilane?

Trisilane is a chemical substance with the molecular formula Si3 and a molar mass of 84.26 g/mol. Its CAS registry number is 7783-26-8.

What is the CAS number of Trisilane?

The CAS registry number of Trisilane is 7783-26-8. Other or deprecated CAS numbers: 134303-33-6, 90968-71-1.

What is the molecular formula and weight of Trisilane?

The molecular formula of Trisilane is Si3 and its molar mass is 84.26 g/mol.

Is Trisilane hazardous?

Trisilane carries the GHS signal word "Danger". Main hazards: catches fire spontaneously if exposed to air, in contact with water releases flammable gas, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Trisilane?

Trisilane is usually classified under HS code 280469 (Silicon, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Trisilane?

CompoundList lists 2 suppliers of Trisilane in Singapore and Taiwan. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Trisilane?

Suppliers quote Trisilane 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 Trisilane

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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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