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Silanes and silicones

Methylsilane

Also known as Silane, methyl-, Silaethane, CH3SiH3

CAS 992-94-9Formula CH6SiMolar mass 46.15 g/molEC 213-598-5
GHS signal word: Danger. Pictograms: Flammable, Gas under pressure, Harmful or irritant 2 suppliers listed
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Methylsilane chemical structure, CH6Si, CAS 992-94-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
992-94-9
Formula
CH6Si
Molar mass
46.15 g/mol
Physical form
Gas
HS code
293190
Category
Silanes and silicones
Illustrative photo, industrial gas cylinders secured with a safety chain in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Methylsilane?

Plain description, key identifiers and synonyms

Methylsilane is a chemical substance with the molecular formula CH6Si and a molar mass of 46.15 g/mol. Its CAS registry number is 992-94-9.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
methylsilane
CAS number
992-94-9 CAS number cross-checkedOther or deprecated CAS: 110477-49-1
EC number
213-598-5
Molecular formula
CH6Si
InChIKey
UIUXUFNYAYAMOE-UHFFFAOYSA-N
InChI
InChI=1S/CH6Si/c1-2/h1-2H3
SMILES (canonical and isomeric)
C[SiH3]

Synonyms

  • Silane, methyl-
  • Silaethane
  • CH3SiH3

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
Gasexp.

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
46.15 g/molcalc.
Exact mass
46.0239 Dacalc.
LogP (octanol/water)
-0.6calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
2calc.
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
GHS02: Flammable
Flammable
GHS04: Gas under pressure
Gas under pressure
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H220Extremely flammable gas.
  • H280Contains gas under pressure, may explode if heated.
  • H312Harmful in contact with skin.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H332Harmful if inhaled.
  • H335May cause respiratory irritation.
  • H336May cause drowsiness or dizziness.
Precautionary statements (24)
  • P203Obtain, read and follow all safety instructions before use.
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P222Do not allow contact with air.
  • 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.
  • 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.
  • P317Get medical help.
  • 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.
  • P377Leaking gas fire: do not extinguish, unless leak can be stopped safely.
  • P381In case of leakage, eliminate all ignition sources.
  • P403Store in a well-ventilated place.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P410 + P403Protect from sunlight. Store in a well-ventilated place.
  • 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

Methylsilane 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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Methylsilane 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

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Methylsilane 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 Methylsilane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Methylsilane?

Methylsilane is a chemical substance with the molecular formula CH6Si and a molar mass of 46.15 g/mol. Its CAS registry number is 992-94-9.

What is the CAS number of Methylsilane?

The CAS registry number of Methylsilane is 992-94-9. Other or deprecated CAS numbers: 110477-49-1.

What is the molecular formula and weight of Methylsilane?

The molecular formula of Methylsilane is CH6Si and its molar mass is 46.15 g/mol.

Is Methylsilane hazardous?

Methylsilane carries the GHS signal word "Danger". Main hazards: extremely flammable gas, contains gas under pressure, may explode if heated, harmful in contact with skin. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Methylsilane?

Methylsilane 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 Methylsilane?

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

What is the price of Methylsilane?

Suppliers quote Methylsilane 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 Methylsilane

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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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