Dimethyldichlorosilane

Dimethyldichlorosilane

Names
Preferred IUPAC name Dichlorodi(methyl)silane
Other names Dichlorodimethylsilane, dichlorodimethylsilicon, dimethylsilicon dichloride, dimethylsilane dichloride, DMDCS
Identifiers
CAS Number	75-78-5 Y
3D model (JSmol)	Interactive image
ChemSpider	6158 Y
ECHA InfoCard	100.000.820
EC Number	200-901-0
PubChem CID	6398
RTECS number	VV3150000
UNII	8TSJ92JX69 Y
UN number	1162
CompTox Dashboard (EPA)	DTXSID9026425
InChI InChI=1S/C2H6Cl2Si/c1-5(2,3)4/h1-2H3 Y Key: LIKFHECYJZWXFJ-UHFFFAOYSA-N Y InChI=1/C2H6Cl2Si/c1-5(2,3)4/h1-2H3 Key: LIKFHECYJZWXFJ-UHFFFAOYAT
SMILES C[Si](C)(Cl)Cl
Properties
Chemical formula	C2H6Cl2Si
Molar mass	129.06 g·mol−1
Appearance	Colorless liquid
Density	1.07 g·cm−3 (l)
Melting point	−76 °C (−105 °F; 197 K)
Boiling point	70 °C (158 °F; 343 K)
Solubility in water	Decomposes
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H225, H315, H319, H335
Precautionary statements	P210, P233, P240, P241, P242, P243, P261, P264, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P233, P403+P235, P405, P501
Flash point	−9 °C (16 °F; 264 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Dimethyldichlorosilane is a tetrahedral organosilicon compound with the formula Si(CH₃)₂Cl₂. At room temperature it is a colorless liquid that readily reacts with water to form both linear and cyclic Si-O chains. Dimethyldichlorosilane is made on an industrial scale as the principal precursor to dimethylsilicone and polysilane compounds.