Dimethyldichlorosilane

• Dimethyldichlorosilane
• Repel - silane
• DMDCS

Colorless, flammable liquid with a pungent odor

Liquid

1.06 g · cm -3

-86 ° C

70 ° C.

150 hPa ( 20 ° C)

Violent decomposition in water

Risk

6056 mg · kg -1 ( LD50, rat, oral)

Template: Infobox chemical / molecular formula search available

Dichlorodimethyl is a colorless, corrosive, highly flammable liquid, which is one of the silanes. It is mainly used for silylation. The resulting derivatives are generally thermally stable and hydrophobic.

Production and representation

Dichlorodimethyl is produced together with chlorotrimethylsilane and trichloromethylsilane about the Müller -Rochow synthesis. In this case, powdered silicon with methyl chloride reacts at 350 ° C in the presence of powdered copper and copper oxide as a catalyst to dichlorodimethylsilane.

Properties

Trichloromethylsilane is a colorless liquid which hydrolyzes in moist air or water to form polymeric methyl siloxanes.

Use

Dichlorodimethylsilane is a universal silylating agent (e.g., for the derivatization of alcohols, diols, carboxylic acids, ( di) amines, amides, ketones, dithiols, etc.) and is mainly used as an intermediate for the production of silicones. As the compound other compounds gives hydrophobic properties, it can be used ( for example, in food chemistry ) to prevent clumping.

Safety

Dichlorodimethyl reacts with alcohols, amines, alkalis, acids and water.