CAS #:

Linear Formula:


MDL Number:


EC No.:



96-97% Hexachlorodisilane
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98% Hexachlorodisilane
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(2N) 99% Hexachlorodisilane
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(3N) 99.9% Hexachlorodisilane
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(4N) 99.99% Hexachlorodisilane
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(5N) 99.999% Hexachlorodisilane
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(6N) 99.9999% Hexachlorodisilane
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(7N) 99.99999% Hexachlorodisilane
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Hexachlorodisilane Properties (Theoretical)

Compound Formula Si2Cl6
Molecular Weight 268.88
Appearance Colorless liquid
Melting Point -1 °C
Boiling Point 144-145.5 °C
Density 1.562 g/mL (25 °C)
Solubility in H2O Reacts violently
Refractive Index n20/D 1.4740-1.4780
Exact Mass 265.767 g/mol
Monoisotopic Mass 265.767 g/mol

Hexachlorodisilane Health & Safety Information

Signal Word Danger
Hazard Statements H290-H314
Hazard Codes C
Precautionary Statements P280-P305 + P351 + P338-P310
Risk Codes R14 R34
Safety Statements S26 S36/37/39 S45
RTECS Number N/A
Transport Information UN 2987 8 / PG II
WGK Germany 3
GHS Pictograms

About Hexachlorodisilane

American Elements manufactures Hexachlorodisilane (HCDS) in both low and high purity grades for thin film deposition, chemical synthesis, and other applications. Please request a quote above to receive pricing information based on your specifications.

Hexachlorodisilane Synonyms

HCDS, 1,1,1,2,2,2-Hexachlorodisilane, Disilicon hexachloride, Disilane, hexachloro-, Disilane, 1,1,1,2,2,2-hexachloro-

Chemical Identifiers

Linear Formula (SiCl3)2
MDL Number MFCD00011599
EC No. 236-704-1
Pubchem CID 83497
IUPAC Name trichloro(trichlorosilyl)silane
SMILES [Si]([Si](Cl)(Cl)Cl)(Cl)(Cl)Cl
InchI Identifier InChI=1S/Cl6Si2/c1-7(2,3)8(4,5)6

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


Chlorine is a Block P, Group 17, Period 3 element. Its electron configuration is [Ne]3s23p5. The chlorine atom has a covalent radius of 102±4 pm and its Van der Waals radius is 175 pm. Chlorine ModelIn its elemental form, chlorine is a yellow-green gas. Chlorine is the second lightest halogen after fluorine. It has the third highest electronegativity and the highest electron affinity of all elements, making it a strong oxidizing agent. It is rarely found by itself in nature. Chlorine was discovered and first isolated by Carl Wilhelm Scheele in 1774. It was first recognized as an element by Humphry Davy in 1808.


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.


October 16, 2021
Los Angeles, CA
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