Chlorodimethylsilane Property

Melting point:

−111 °C(lit.)

Boiling point:

34.7 °C(lit.)

Density 

0.852 g/mL at 25 °C(lit.)

vapor density 

4 (vs air)

vapor pressure 

8.56 psi ( 20 °C)

refractive index 

n20/D 1.383(lit.)

Flash point:

−20 °F

storage temp. 

2-8°C

solubility 

Miscible with organic solvents.

form 

Liquid

Specific Gravity

0.868

color 

Clear colorless

explosive limit

3.0-20.0%(V)

Water Solubility 

reacts

Sensitive 

Moisture Sensitive

Hydrolytic Sensitivity

8: reacts rapidly with moisture, water, protic solvents

BRN 

1633434

InChIKey

YGHUUVGIRWMJGE-UHFFFAOYSA-N

CAS DataBase Reference

1066-35-9(CAS DataBase Reference)

NIST Chemistry Reference

Silane, chlorodimethyl-(1066-35-9)

EPA Substance Registry System

Silane, chlorodimethyl- (1066-35-9)

Safety

Hazard Codes 

F,C,F+

Risk Statements 

11-34-12-35-20-14/15

Safety Statements 

16-26-36/37/39-45-9-43

RIDADR 

UN 2988 4.3/PG 1

WGK Germany 

1

F 

10-21

TSCA 

Yes

HazardClass 

3

PackingGroup 

I

HS Code 

29310095

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H224Extremely flammable liquid and vapour

H261In contact with water releases flammable gas

H314Causes severe skin burns and eye damage

H331Toxic if inhaled

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P231+P232Handle under inert gas. Protect from moisture.

P233Keep container tightly closed.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Chlorodimethylsilane Chemical Properties,Usage,Production

Chemical Properties

Colorless clear liquid

Uses

Chlorodimethylsilane is used to prepare vinyldimethylsilanols for palladium-catalyzed cross-coupling with aryl iodides. Chlorodimethylsilane in combination with a tertiary amine such as triethylamine is another useful reagent for the synthesis of hydrodimethylsilyl ethers, especially for large scale preparations.

Application

The popular uses of chlorodimethylsilane are listed as below:
Will form high-boiling polymeric by-products with aqueous work-up.
A monomer ('building block') in the production of silicone polymers. Silicone polymers may be oils, greases, rubbers and resins and have a wide-range of uses.
In the electronics industry for the production of ultra-pure polysilicon and in the manufacture of semiconductors and photovoltaics.
Although the end uses of products made from chlorodimethylsilane will vary, it can be assumed that due to its highly reactive nature, no residual unreacted material will be present in any of the final products.

General Description

A colorless fuming liquid with a pungent, burning odor. Flash point -18°F. Boiling point 95°F. Density about 6.9 lb / gal. Extremely corrosive to skin and respiratory tissues, both as a liquid and vapor. Vapors are heavier than air.

Air & Water Reactions

Highly flammable. Reacts violently on contact with water to liberate heat and hydrogen chloride gas.

Reactivity Profile

Chlorosilanes, such as DIMETHYLCHLOROSILANE, are compounds in which silicon is bonded to from one to four chlorine atoms with other bonds to hydrogen and/or alkyl groups. Chlorosilanes react with water, moist air, or steam to produce heat and toxic, corrosive fumes of hydrogen chloride. They may also produce flammable gaseous H2. They can serve as chlorination agents. Chlorosilanes react vigorously with both organic and inorganic acids and with bases to generate toxic or flammable gases.

Health Hazard

May cause toxic effects if inhaled or ingested/swallowed. Contact with substance may cause severe burns to skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.

Fire Hazard

Flammable/combustible material. May be ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

Flammability and Explosibility

Extremely flammable