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)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	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.