Octadecamethyloctasiloxane

Base Information

Chemical Name:Octadecamethyloctasiloxane
CAS No.:556-69-4
Molecular Formula:C18H54 O7 Si8
Molecular Weight:607.307
Hs Code.:
European Community (EC) Number:209-138-8
DSSTox Substance ID:DTXSID5060306
Nikkaji Number:J188.414J
Wikidata:Q81989072
Mol file:556-69-4.mol

Synonyms:OCTADECAMETHYLOCTASILOXANE;556-69-4;Octasiloxane, octadecamethyl-;[dimethyl(trimethylsilyloxy)silyl]oxy-[[[[dimethyl(trimethylsilyloxy)silyl]oxy-dimethylsilyl]oxy-dimethylsilyl]oxy-dimethylsilyl]oxy-dimethylsilane;EINECS 209-138-8;Octasiloxane, 1,1,1,3,3,5,5,7,7,9,9,11,11,13,13,15,15,15-octadecamethyl-;octadecamethyl-octasiloxane;SCHEMBL475568;C18H54O7Si8;DTXSID5060306;HSDB 8421;C18-H54-O7-Si8;AS-76104;D93508

Suppliers and Price of Octadecamethyloctasiloxane

Supply Marketing:

Business phase:: The product has achieved commercial mass production^*data from LookChem market partment

Manufacturers and distributors:

Manufacture/Brand
Chemicals and raw materials
Packaging
price

Total 29 raw suppliers

Chemical Property of Octadecamethyloctasiloxane

Chemical Property:

Vapor Pressure:1.57E-06mmHg at 25°C
Melting Point:-63°C
Refractive Index:1.3970
Boiling Point:409.1°Cat760mmHg
Flash Point:192.1°C
PSA：64.61000
Density:0.925g/cm³
LogP:6.98320
Hydrogen Bond Donor Count:0
Hydrogen Bond Acceptor Count:7
Rotatable Bond Count:14
Exact Mass:606.20236633
Heavy Atom Count:33
Complexity:587

Purity/Quality:: 98%,99%, ^*data from raw suppliers

Safty Information:

Pictogram(s):
Hazard Codes:

MSDS Files:: SDS file from LookChem

Useful:

Canonical SMILES:C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C

Technology Process of Octadecamethyloctasiloxane

There total 6 articles about Octadecamethyloctasiloxane 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:

: 107-46-0
Hexamethyldisiloxane

: 556-67-2
octamethylcyclotetrasiloxane

: 556-69-4
octadecamethyloctasiloxane

: 107-51-7
octamethyltrisiloxabe

: 541-02-6
decamethylcyclopentasiloxane

Guidance literature:: With sulfuric acid; antimony(V) chloride; In tetrachloromethane; sulfuric acid; shaking of (CH3)3SiOSi(CH3)3 and ((CH3)2SiO)4 (1:1 mol) with concd. H2SO4 at 25°C for 8 days; equilibrium react.; further products;;
DOI:10.1021/ja01215a050

Reference yield:

: 1825-62-3
ethyl trimethylsilyl ether

: 78-62-6
diethoxy dimethylsilane

: 556-69-4
octadecamethyloctasiloxane

: 107-46-0
Hexamethyldisiloxane

: 107-51-7
octamethyltrisiloxabe

: 556-67-2
octamethylcyclotetrasiloxane

Guidance literature:: With NaOH; In water; byproducts: C2H5OH; heating of (CH3)2Si(OC2H5)2, (CH3)3Si(OC2H5) and an excess (50%) of H2O in presence of NaOH; sepn. of C2H5OH by distn.; boiling of the residue with 20% aq. HCl; further products;; distn.;;
DOI:10.1021/ja01215a048