Synonym: Hexachloropropanedisiloxane, Perchlorodisiloxane, HCDSO

CAS Number 14986-21-1 | MDL Number MFCD00031530 | EC Number 239-070-4

Perchlorodisiloxane chemical Structure

Product codeSI6211
CAS number14986-21-1
Assay (purity)99%
Metal purity99.99%-Si
Purity methodby ICP-ms and chromatography
Molecular weight284.89 g/mol
NMRconforms to structure
Boiling point137.2°C
Appearancecolorless liquid
Sensitivityair, moisture
Molecular formulaCl6OSi2
Linear formulaCl3SiOSiCl3
Packagingglassware/metal containers/bubblers

Hexachlorodisiloxane, reacting with primary and secondary amines leads, dependent on stoichiometry, to numerous partially and totally organylamino substituted disiloxanes. Partially amino-substituted chlorodisiloxanes are very sensitive to moisture and can be converted into disiloxanes with different organylamino groups. Exhaustive alkanolysis substitutes amino as well as chloro groups giving hexaalkoxydisiloxanes, but partial alkanolysis may substitute amino in preference to chloro-groups. See links below

Ereztech manufactures and sells this product in small and bulk volumes. Glass ampules, bottles or metal ampules or bubblers are available for packaging. For additional analytical information or details about purchasing SI6211 contact us at sales@ereztech.com

Safety information

Hazardous class3(8)
Packing groupII
Pictograms  GHS07
Signal wordDANGER
Hazard statementsH225-H314-H318-H335
Precautionary statementsP210-P233-P240-P241-P242-P243-P260-P264-P271-P280-P301 + P330 + P331-P303 + P361 + P353-P304 + P340-P305 + P351 + P338-P310-P363-P403 + P233-P405-P501
Transport descriptionChlorosilanes, corrosive, n.o.s. (Hexachlorodisiloxane)
In TSCA registryYes

First Aid Measures

General adviceConsult a physician. Show this safety data sheet to the doctor in attendance. Move out of the dangerous area.
Eye contactRinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
Skin contactWash off with soap and plenty of water. Consult a physician.
InhalationIf breathed in, move person into the fresh air. If not breathing, give artificial respiration. Consult a physician.
If swallowedDo NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.


Certificates of Analysis (CoA)

If you don’t see the needed lot of Hexachlorodisiloxane below please contact customer support at sales@ereztech.com

Lot# 2P21020 Lot# 2R05720 Lot# 12R4.10220 Lot# 12R50220

External identifiers for HCDSO

Pubchem CID84745
IUPAC Nametrichloro(trichlorosilyloxy)silane
InchI IdentifierInChI=1S/Cl6OSi2/c1-8(2,3)7-9(4,5)6

Known applications and external links

With Silicon tetraiodide oxide other customers often ask:

Ereztech synthesizes and sells additional SI-compounds.

To purchase SI6211 contact us at sales@ereztech.com