Octachlorotrisiloxane

Base Information

• Chemical Name: Octachlorotrisiloxane
• CAS No.: 31323-44-1
• Molecular Formula: Cl8O2Si3
• Molecular Weight: 399.879
• Hs Code.: 2934999090
• European Community (EC) Number: 250-570-1
• DSSTox Substance ID: DTXSID7067613
• Nikkaji Number: J278.092E
• Wikidata: Q81994231
• Mol file: 31323-44-1.mol

Synonyms:Octachlorotrisiloxane;31323-44-1;Trisiloxane, octachloro-;trichloro-[dichloro(trichlorosilyloxy)silyl]oxysilane;Perchlorotrisiloxane;Trisiloxane,1,1,1,3,3,5,5,5-octachloro-;EINECS 250-570-1;Trisiloxane, 1,1,1,3,3,5,5,5-octachloro-;Ctachlorotrisiloxane;Cl8O2Si3;Octachloropentanetrisiloxane;Cl8-O2-Si3;DTXSID7067613;MFCD00054211;AKOS025286064;1,1,1,3,3,5,5,5-octachlorotrisiloxane

Chemical Property of Octachlorotrisiloxane

Chemical Property:

• Vapor Pressure: 0.6mmHg at 25°C
• Melting Point: -47°C
• Refractive Index: 1.4585
• Boiling Point: 195 °C at 760 mmHg
• PSA: 18.46000
• Density: 1.669g/cm³
• LogP: 4.23680
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 2
• Rotatable Bond Count: 2
• Exact Mass: 399.665530
• Heavy Atom Count: 13
• Complexity: 149

Purity/Quality:

97% ^*data from raw suppliers

Safty Information:

• Statements: 14-34
• Safety Statements: 26-36/37/39

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: O([Si](O[Si](Cl)(Cl)Cl)(Cl)Cl)[Si](Cl)(Cl)Cl

Technology Process of Octachlorotrisiloxane

There total 12 articles about Octachlorotrisiloxane which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 1.5%

tetrachlorosilane (10026-04-7,53609-55-5) + oxygen (80937-33-3) → octachlorotrisiloxane (31323-44-1) + cyclooctachlorotetrasiloxane (67777-49-5) + decachloro tetrasiloxane (56240-64-3) + hexachlorocyclosiloxane (103084-63-5) + hexachlorodisiloxane (14986-21-1)

Guidance literature:

In neat (no solvent); byproducts: Cl2; reaction of gaseous SiCl4 and O2 at 955°C, products are condensed at 55°C; destillation, sublimation;

Reference yield:

tetrachlorosilane (10026-04-7,53609-55-5) + water (7732-18-5) → octachlorotrisiloxane (31323-44-1) + hexachlorodisiloxane (14986-21-1)

Guidance literature:

In diethyl ether; water; dropwise addn. of an aq. ether soln. to a cooled ethereal solution of SiCl4 under stirring;; fractional distn.;;

DOI:10.1021/ja01195a522

Reference yield:

oxygen (80937-33-3) + chlorine (7782-50-5) + silicon (7440-21-3) → octachlorotrisiloxane (31323-44-1) + cyclooctachlorotetrasiloxane (67777-49-5) + decachloro tetrasiloxane (56240-64-3) + dodecachloro pentasiloxane (42931-29-3) + hexachlorodisiloxane (14986-21-1)

Guidance literature:

In neat (no solvent); reaction of a mixture of Cl2 and O2 (2:1) with Si in a glass tube at red heat; further products;; condensation and fractionation;;

DOI:10.1021/ja01855a072

upstream raw materials:

tetrachlorosilane

water

oxygen

chlorine

Downstream raw materials:

tetrachlorosilane

ClOSi

silicon oxychloride

dichlorosilylene