Octamethylcyclotetrasiloxane (D4)
Product Name: 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
|
Item |
Index |
|
Chroma/ Platinum-cobalt scale/ Hazen unit |
≤10 |
|
Refractive index nD20 |
|
|
Content of Octamethyl cyclotetrasiloxane/% |
≥99.0 |
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.
Preparation Method of Octamethylcyclotetrasiloxane
Dimethyl dichlorosilane is added dropwise to water, the temperature is maintained at 30-40℃, stratified, the acidic water is released, the oily substance is hydrolyzed with sodium hydroxide solution, the hydrolysate and 0.5%-2% potassium hydroxide are added into the cracking kettle and cracked at 120-140℃ and 99.8kPa vacuum. The cracked material is fractionated and the fraction is collected at 173-176°C to obtain octamethylcyclotetraoxysilane.
Zhongtian East is a silicone product supplier, if you want to buy silicone products, contact us .
Отправить запрос, связаться с поставщиком
Другие товары поставщика
 |
Silicone Fluid | Silicone fluids have unique properties because they are not products of petroleum or organic chemistry. They were the first, and are still the only... |
 |
Trimethylchlorosilane (M3) | Name: Trimethylchlorosilane Feature: Trimethy lchloro silane is a colorless or light yellow transparent irritating liquid. trimethylsilyl chlori... |
 |
Silicone Sealant | ZhongtianEast Fluorine Silicon Material Co.,silicone sealant manufacturers,Ltd., mainly engaged in organic silicon monomer, research and developmen... |
 |
Silane Coupling Agents | Silane coupling agent, also known as silane treatment agent and primer, is a kind of low molecular organic silicon compound with special structure.... |
 |
RTV Silicone Rubber | RTV Silicone Rubber Silicone rubber is a straight chain of high molecular weight polysiloxane, molecular weight is generally more than 150,000, it... |
