6747. Octamethylcyclotetrasiloxane

Nomenclature

CAS number: 556-67-2
C8H24O4Si4; mol wt 296.62.
C 32.39%, H 8.16%, O 21.58%, Si 37.87%.

Description and references

Isolated from the hydrolysis product of dimethyldichlorosilane: Patnode, Wilcock, J. Am. Chem. Soc. 68, 358 (1946).

Chemical structure

Properties

Oily liquid. mp 17.5°. bp 175°. bp20 74°. d 0.9558. nD20 1.3968.

Use

Preparation of methyl silicon oils.