Hexamethyldisiloxane (silicone, MM capping agent), colorless and transparent liquid, easy to deliquesce. Insoluble in water, soluble in many organic solvents. Used as silicone oil, silicone rubber, pharmaceuticals, gas chromatography fixatives, analytical reagents, water-repellent agents, etc. Produced by hydrolysis of trimethylchlorosilane.

1. Properties: colorless transparent liquid, easy to deliquesce.
2. Solubility: insoluble in water, soluble in most organic solvents;
Stability: stable;
Hazard marking: F Flammable substances
3. Technical indicators:
Density: 0.762-0.770g/ml
Refractive index: 1.3748
Melting point: -59℃
Boiling point: 99.5℃
Flash point: -1℃
4. Dangerous characteristics: It can easily cause burning in case of high heat, open flame and strong oxidant
Combustion (decomposition) products: carbon monoxide, carbon dioxide, silicon oxide.

62.49g (0.575mol) trimethylchlorosilane was added dropwise to a solution composed of 72.7g (0.06mol) N,N-dimethylaniline and 7g water, and heated to reflux for 1h. Atmospheric distillation, collecting 98-101 ℃ fractions, after drying it is hexamethyldisilyl ether, to obtain 43-44g, yield 92-94%. Industrial production is to hydrolyze trimethylchlorosilane at 30-40℃.

Used as silicone oil, silicone rubber, pharmaceuticals, gas chromatography fixed liquids, analytical reagents, water-repellent agents, etc. This product is used as a head sealer, cleaning agent, and stripping agent. It is mainly used in the production of organic chemicals and pharmaceutical chemicals.

Hexamethyldisiloxane (HMDO) is an organosilicon compound having the formula O [Si(CH3)3] 2. The volatile colorless liquid is used as a solvent and reagent in organic synthesis. It is prepared by hydrolysis of trimethylsilyl chloride. This molecule is a typical disiloxane, similar to the subunits of polydimethylsiloxane. Silways manufacturer is recognized as China's leading wholesaler of hexamethyldisiloxane and Alkyl Modified Siloxane , Dimethicone 5cst , we provide reliable quality and affordable products and win the market Most consumers recognize and love. Welcome to consult and order: https://www.silways.com/hexamethyldisiloxane-hmdo.html