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Analytical reagents

Tetramethylsilane

Also known as Silane, tetramethyl-, Tetramethyl silane, Tetramethylsilicane

CAS 75-76-3Formula C4H12SiMolar mass 88.23 g/molEC 200-899-1
GHS signal word: Danger. Pictograms: Flammable, Harmful or irritant, Hazardous to the environment 26 suppliers listed
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Tetramethylsilane chemical structure, C4H12Si, CAS 75-76-3
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Volatile liquid or gas
Melting point
-99.1 °C
Boiling point
26.6 °C
Density
0.641 g/cm³ at 25 °C
Flash point
-27 dec C (closed cup)
HS code
293190
Category
Analytical reagents
UN number
UN 2749
Illustrative photo, closed amber glass reagent bottles on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Tetramethylsilane?

Plain description, key identifiers and synonyms

Tetramethylsilane is an organosilicon compound that is silane in which the hydrogens have been replaced by methyl groups. It has a role as a NMR chemical shift reference compound.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
tetramethylsilane
CAS number
75-76-3 CAS number cross-checked
EC number
200-899-1
Molecular formula
C4H12Si
UNII
41Y0RBG14Q
MDL number
MFCD00008274
InChIKey
CZDYPVPMEAXLPK-UHFFFAOYSA-N
InChI
InChI=1S/C4H12Si/c1-5(2,3)4/h1-4H3
SMILES (canonical and isomeric)
C[Si](C)(C)C

Synonyms

  • Silane, tetramethyl-
  • Tetramethyl silane
  • Tetramethylsilicane
  • Silicon tetramethyl
  • Silicon, tetramethyl-
  • Tetramethyl-silane
  • Me4Si
  • (CH3)4Si
  • Si(CH3)4
  • tetra-methylsilane
  • tetra-methyl silane
  • SiMe4
  • Tetramethylsilane [UN2749] [Flammable liquid]
  • Tetramethylsilane, NMR grade TMS
  • Tetramethylsilane, >=99.0% (GC)
  • UN 2749
  • Tetramethylsilane,NMR grade(99.9% min)
  • Tetramethylsilane, ACS reagent, NMR grade, >=99.9%
  • Tetramethylsilane, electronic grade, >=99.99% trace metals basis
  • Tetramethylsilane, analytical standard, for NMR spectroscopy, ACS reagent
  • Tetramethylsilane, produced by Wacker Chemie AG, Burghausen, Germany, >=99.0% (GC)

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

Appearance
Volatile liquid or gasexp.
Melting point
-99.1 °Cexp.
Boiling point
26.6 °Cexp.
Density
0.641 g/cm³ at 25 °Cexp.
Flash point
-27 dec C (closed cup)exp.
Solubility
In water, 19.6 mg/L at 25 °Cexp.
Vapour pressure
718 mm Hg at 25 °Cexp.

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
88.23 g/molcalc.
Exact mass
88.0708 Dacalc.
LogP (octanol/water)
1.95calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
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
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H224Extremely flammable liquid and vapour.
  • H302Harmful if swallowed.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (17)
  • 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.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P330Rinse mouth.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P391Collect spillage.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2749
Transport hazard class
3
Packing group
I

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

Tetramethylsilane suppliers

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

All 26 suppliers
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Where suppliers are based

26 suppliers in 7 countries

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Tetramethylsilane 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

In aviation fuel.

Used in chemical deposition of films of silicon carbide, 1H NMR primary reference standard.

Industrial uses: Plating agent, Intermediate.

Roles

  • NMR chemical shift reference compound
  • reference compound

How it is made

By Grignard reaction of silicon tetrachloride and methylmagnesium chloride.

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

Frequently asked questions

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

What is Tetramethylsilane?

Tetramethylsilane is an organosilicon compound that is silane in which the hydrogens have been replaced by methyl groups. It has a role as a NMR chemical shift reference compound.

What is the CAS number of Tetramethylsilane?

The CAS registry number of Tetramethylsilane is 75-76-3.

What is the molecular formula and weight of Tetramethylsilane?

The molecular formula of Tetramethylsilane is C4H12Si and its molar mass is 88.23 g/mol.

What is Tetramethylsilane used for?

In aviation fuel. Used in chemical deposition of films of silicon carbide, 1H NMR primary reference standard. Industrial uses: Plating agent, Intermediate.

Is Tetramethylsilane hazardous?

Tetramethylsilane carries the GHS signal word "Danger". Main hazards: extremely flammable liquid and vapour, harmful if swallowed, toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Tetramethylsilane?

Tetramethylsilane 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 Tetramethylsilane?

CompoundList lists 26 suppliers of Tetramethylsilane in China, United States, Germany, Canada and 3 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Tetramethylsilane in India?

1 supplier in India list Tetramethylsilane on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Tetramethylsilane?

Suppliers quote Tetramethylsilane 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 Tetramethylsilane

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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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