Melting point :17-18 °C (lit.)
Boiling point :175-176 °C (lit.)
Density :0.956 g/mL at 25 °C (lit.)
vapor density :1 (vs air)
vapor pressure :1.32hPa at 25℃
refractive index :n20/D 1.396(lit.)
Flash point :140 °F
storage temp. :Store below +30°C.
solubility :<0.001g/l Hydrolysis
form :liquid
color :colorless
Specific Gravity :0.956
explosive limit :0.4-11.7%(V)
Water Solubility :INSOLUBLE
Sensitive :Moisture Sensitive
Merck :14,6747
BRN :1787074
Dielectric constant :2.4（20℃）
InChIKey :HMMGMWAXVFQUOA-UHFFFAOYSA-N
LogP :6.98 at 21.7℃
CAS DataBase Reference :556-67-2(CAS DataBase Reference)
NIST Chemistry Reference :Cyclotetrasiloxane, octamethyl-(556-67-2)
EPA Substance Registry System :Octamethylcyclotetrasiloxane (556-67-2)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P202 Do not handle until all safety precautions have been read and understood. P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233 Keep container tightly closed. P240 Ground/bond container and receiving equipment. P273 Avoid release to the environment. P308+P313 IF exposed or concerned: Get medical advice/attention.