Octavinyloctasilasesquioxane

Synonym(s):1,3,5,7,9,11,13,15-Octavinylpentacyclo[9.5.1.1^3,9.1^5,15.1^7,13]octasiloxane;Octavinyloctasilasesquioxane

CAS NO.：69655-76-1
Empirical Formula: C16H24O12Si8
Molecular Weight: 633.04
MDL number: MFCD24450214
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-28 01:25:00

What is Octavinyloctasilasesquioxane?

Description

Octavinyloctasilasesquioxane (OVS) is a useful organic intermediate with eight unsaturated double bonds, and it can be used to adjust the chemical structure of copolymer. It could used as a cross-linking agent to prepared the PHBV/OVS ;composites by melt-reaction technique. It is also used to synthesize highly luminescent PNC-polymer composites with a superhydrophobic micro/nano structured surface. The OVS is condensed into the micro/nano-scale protrusions (second phase) on the PECA substrate because of the strong Si-O bonds between OVS molecules to [1-2]. This method can achieve the purpose of packaging Metal halide perovskite nanocrystals and solve the problem of the low chemical stability against water.

References

[1] Xiang H , et al. The Crystallization, Melting Behaviors and Thermal Stability of Cross-linked Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) by Octavinyloctasilasesquioxane. Chinese Journal of Polymer Science, 2018; 36: 1353–1360.
[2] Wang S, et al. Perovskite nanocrystals-polymer composites with a micro/nano structured superhydrophobic surface for stable and efficient white light-emitting diodes. Chemical Engineering Journal, 2022; 473: 135303.

Properties of Octavinyloctasilasesquioxane

Melting point:	>350 °C (lit.)
Boiling point:	329.4±25.0 °C(Predicted)
Density	1.22±0.1 g/cm3(Predicted)
Flash point:	>200°C
storage temp.	Inert atmosphere,Room Temperature
form	powder to crystal
color	White to Almost white
Specific Gravity	1.350
Hydrolytic Sensitivity	1: no significant reaction with aqueous systems
BRN	2320666
NIST Chemistry Reference	Octa(vinylsilasesquioxane)(69655-76-1)