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Octaphenylsilsesquioxane

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Octaphenylsilsesquioxane Basic information

Product Name:
Octaphenylsilsesquioxane
Synonyms:
  • OCTAPHENYLSILSESQUIOXANE
  • OCTAPHENYL-T8-SILSESQUIOXANE
  • 1,3,5,7,9,11,13,15-OCTAPHENYLPENTACYCLO[9.5.1.13,9.15,15.17,13]OCTASILOXANE
  • Pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane, octaphenyl-
  • Perphenyloctasilsesquioxane
  • 1,3,5,7,9,11,13,15-OCTAPHENYLPENTACYCLO-OCTASILOXANE
  • pss-octaphenyl substituted
  • Octaphenyl-POSS(R), Octaphenylsilsesquioxane, 1,3,5,7,9,11,13,15-Octaphenylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane
CAS:
5256-79-1
MF:
C48H40O12Si8
MW:
1033.51
Mol File:
5256-79-1.mol
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Octaphenylsilsesquioxane Chemical Properties

Melting point:
>350 °C (lit.)
Density 
1.30 g/cm3
refractive index 
1.61
storage temp. 
Inert atmosphere,Room Temperature
form 
powder to crystal
color 
White to Almost white
Specific Gravity
1.35
Hydrolytic Sensitivity
1: no significant reaction with aqueous systems
InChIKey
KBXJHRABGYYAFC-UHFFFAOYSA-N
CAS DataBase Reference
5256-79-1
NIST Chemistry Reference
Silsesquioxane, phenyl-, cubical octamer(5256-79-1)
EPA Substance Registry System
Pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane, 1,3,5,7,9,11,13,15-octaphenyl- (5256-79-1)
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Safety Information

WGK Germany 
3
TSCA 
No
HS Code 
29319000

MSDS

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Octaphenylsilsesquioxane Usage And Synthesis

Uses

Octaphenylsilsequioxane (CAS# 5256-79-1) is a polyhedral oligomeric silsesquioxane (POSS). Octaphenylsilsequioxane has been used in the preparation of flame-retardant and radiation-resistant materials.

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