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Linear Formula:


MDL Number:


EC No.:



(2N) 99% Hexamethyldisilane
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(3N) 99.9% Hexamethyldisilane
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(4N) 99.99% Hexamethyldisilane
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(5N) 99.999% Hexamethyldisilane
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Hexamethyldisilane Properties (Theoretical)

Compound Formula C6H18Si2
Molecular Weight 146.37812
Appearance liquid
Melting Point 9-12 °C
Boiling Point 112-114 °C
Density 0.715 g/mL at 25 °C
Solubility in H2O N/A
Exact Mass 146.094704
Monoisotopic Mass 146.094704

Hexamethyldisilane Health & Safety Information

Signal Word Danger
Hazard Statements H225-H319-H334-H335
Hazard Codes F,Xi
Risk Codes 11-36/37-43
Safety Statements 16-23-25
RTECS Number JM9170000
Transport Information UN 1993 3/PG 2
WGK Germany 2

About Hexamethyldisilane

Hexamethyldisilane is generally immediately available in most volumes. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Hexamethyldisilane Synonyms

Disilane, hexamethyl-, Permethyldisilane

Chemical Identifiers

Linear Formula (Si(CH3)3)2
MDL Number MFCD00008258
EC No. 215-911-0
Beilstein/Reaxys No. 1633463
Pubchem CID 74057
IUPAC Name trimethyl(trimethylsilyl)silane
SMILES C[Si](C)(C)[Si](C)(C)C
InchI Identifier InChI=1S/C6H18Si2/c1-7(2,3)8(4,5)6/h1-6H3

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements


See more Silicon products. Silicon (atomic symbol: Si, atomic number: 14) is a Block P, Group 14, Period 3 element with an atomic weight of 28.085. Silicon Bohr MoleculeThe number of electrons in each of Silicon's shells is 2, 8, 4 and its electron configuration is [Ne] 3s2 3p2. The silicon atom has a radius of 111 pm and a Van der Waals radius of 210 pm. Silicon was discovered and first isolated by Jöns Jacob Berzelius in 1823. Silicon makes up 25.7% of the earth's crust, by weight, and is the second most abundant element, exceeded only by oxygen. The metalloid is rarely found in pure crystal form and is usually produced from the iron-silicon alloy ferrosilicon. Elemental SiliconSilica (or silicon dioxide), as sand, is a principal ingredient of glass, one of the most inexpensive of materials with excellent mechanical, optical, thermal, and electrical properties. Ultra high purity silicon can be doped with boron, gallium, phosphorus, or arsenic to produce silicon for use in transistors, solar cells, rectifiers, and other solid-state devices which are used extensively in the electronics industry.The name Silicon originates from the Latin word silex which means flint or hard stone.


May 24, 2024
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