Octamethylcyclotetrasiloxane (D4)

Molecular Formula: (CH3 ) 8 Si4 O4

CAS No.: 556-67-2

Physical and Chemical Properties:

Freezing Point: 17~18℃

Boiling Point: 175-176℃

Flash Point: 60℃ Relative Density（water=1）: 0.956

Appearance: Colorless transparent liquid without visible impurity

Technical Data of Octamethylcyclotetrasiloxane

Octamethylcyclotetrasiloxane Uses

It is colorless, inflammable, and can not dissolve in water, but dissolve in organic solvents such as benzene, etc. It can be used to synthesize organic silicon polymer by acid or alkali catalysis to manufacture silicone oil, silicone rubber, etc. It can also be used directly as a treating agent for rubber stuffing and the raw material for cosmetics.

Package, Storage, and Handling

Steel drum, net weight 190kg/drum or International Bulk Container, net weight 950kg/IBC or ISO TANK. Store in a cool, dry, well-ventilated area and keep away from oxidant, acid, and alkali. The storage area should be equipped with the corresponding species and quantity of fire equipment and leakage emergency equipment. Handling according to hazardous substances. Be careful when loading and unloading to avoid damages to the package.

Chemical Stability: Stable in closed containers under specified storage and handling conditions.

Conditions to Avoid: Incompatible materials, any sources of ignition or heat, exposure to moist air or water.

Incompatibilities with Other Materials: Strong oxidizing agents, acids, bases.

Hazardous Decomposition Products: In the case of a fire, oxides of carbon, hydrocarbons, silicon oxide, fumes, and smoke may be generated by thermal decomposition or combustion.

Hazardous Polymerization: May occur.