Synthesis of high-purity heptamethylchlorocyclotetrasiloxane

Authors
Martynova, TN Voronkov, MG
Citation
Tn. Martynova et Mg. Voronkov, Synthesis of high-purity heptamethylchlorocyclotetrasiloxane, RUS J AP CH, 73(5), 2000, pp. 921-922
Citations number
4
Categorie Soggetti
Chemistry
Journal title
RUSSIAN JOURNAL OF APPLIED CHEMISTRY
ISSN journal
10704272 → ACNP
Volume
73
Issue
5
Year of publication
2000
Pages
921 - 922
Database
ISI
SICI code
1070-4272(200005)73:5<921:SOHH>2.0.ZU;2-C
Abstract
The procedures of preparation of heptamethylcyclotetrasiloxane (CH3)(7)Si4O 4H in a 60% yield, its exhaustive purification, and its chlorination to for m (CH3)(7)Si4O4Cl in a quantitative yield were developed. The composition o f heptamethylchlorocyclotetrasiloxane and the content of alkali and heavy m etal impurities in this compound, permissible for materials used in electro nics, were determined by elemental analysis, gas-liquid chromatography, fla me photometry, and atomic absorption analysis.