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< /a>
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Item |
Index |
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Chroma/ Platinum-cobalt scale/ Hazen unit |
≤10 |
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Refractive index nD20 |
1.3960~1.3970 |
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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.
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334 Equipment goodsReport abuse
Thursday, May 16, 2024
Automatic Gear Pump Liquid Filling Machine FP-465 is designed and engineered to produce outstanding quality and precision filling suitable for various products like shampoo, hot sauce, lubricant oil etc. FP-465 can also replace piston or peristaltic module for the flexibility of filling demands...
Autopack Co.,Ltd
- autopacker
- 33454 - Taoyuan City
- +88 6 33 68 98 06
334 Equipment goodsReport abuse
Thursday, May 16, 2024
Automatic Gear Pump Liquid Filling Machine FG-465 is designed and engineered to produce outstanding quality and precision filling suitable for various products like shampoo, hot sauce, lubricant oil etc. FG-465 can also replace piston or peristaltic module for the flexibility of filling demands...
Autopack Co.,Ltd
- autopacker
- 33454 - Taoyuan City
- +88 6 33 68 98 06
50000 FoodReport abuse
Tuesday, February 16, 2016
Quantity : 1000 - Price : 1500 USD/ MT CIF
We are a professional manufacture and exporter of dried apricot, raisin and goji berry, we can supply you dried apricot, brown raisin, golden raisin, green raisin and goji berry with high quality and competitive prices. We can do small pack and bulk pack as buyers' requirements,...
KHUN JACK PARTNERSHIP LIMITED
- 50000 - CHIANG MAI
- +66 9 56 19 49 81
