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HomeProduct name listOctaphenylsilsesquioxane

Octaphenylsilsesquioxane

Synonym(s):1,3,5,7,9,11,13,15-Octaphenylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane;Octaphenyl-POSS;Octaphenylsilsesquioxane

  • CAS NO.:5256-79-1
  • Empirical Formula: C48H40O12Si8
  • Molecular Weight: 1033.51
  • MDL number: MFCD00308870
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-04-23 13:52:06
Octaphenylsilsesquioxane Structural

What is Octaphenylsilsesquioxane?

The Uses of Octaphenylsilsesquioxane

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.

Properties of Octaphenylsilsesquioxane

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
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)

Safety information for Octaphenylsilsesquioxane

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H332:Acute toxicity,inhalation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for Octaphenylsilsesquioxane

InChIKey KBXJHRABGYYAFC-UHFFFAOYSA-N

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