Title: Decamethyltetrasiloxane
CAS Registry Number: 141-62-8
Molecular Formula: C10H30O3Si4
Molecular Weight: 310.69
Percent Composition: C 38.66%, H 9.73%, O 15.45%, Si 36.16%
Literature References: Prepn: Patnode, Wilcock, J. Am. Chem. Soc. 68, 358 (1946).
Properties: Liquid. bp 194°. d 0.8536. nD20 1.3895. mp ~-70°. Stable. Inert to most chemical reagents and rubber. Maintains about the same viscosity over a wide temp range. Sol in benzene and the lighter hydrocarbons; slightly sol in alc and heavy hydrocarbons.
Melting point: mp ~-70°
Boiling point: bp 194°
Index of refraction: nD20 1.3895
Density: d 0.8536
Use: As a basis for silicone oils or fluids designed to withstand extremes of temp; as a foam suppressant in petr lubricating oil. |