Product Identification

Product Name

Chloro(chloromethyl)dimethylsilane

Synonyms

(Chloromethyl)chlorodimethylsilane
(Chloromethyl)dimethylchlorosilane
Dimethyl(chloromethyl)chlorosilane
LS 230
Silan CMM2

CAS

1719-57-9

Formula

C3H8Cl2Si

Molecular Weight

143.09

EINECS

217-006-6

Beilstein/Gmelin

1731933

Beilstein Reference

4-04-00-04024

EC Class

flammable, corrosive

Physical and Chemical Properties

Appearance

Clear, colorless liquid.

Solubility in water

Insoluble

Melting Point

6

Boiling Point

115

Density

1.071 g/cm3 (20 C)

Refractive Index

1.4511 (20 C)

First Aid Measures

Ingestion

Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.

Inhalation

Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.

Skin

Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.

Eyes

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage

Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Keep under a nitrogen blanket. Flammables-area.

Handling

Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Use only in a chemical fume hood.

Hazards Identification

Ingestion

Causes gastrointestinal tract burns. May cause nausea and vomiting.

Inhalation

Causes chemical burns to the respiratory tract. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema.

Skin

Causes skin burns.

Eyes

Causes eye burns.

Hazards

Vapors form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors may travel to source of ignition and flash back. Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff.

EC Risk Phrase

R 10 34

EC Safety Phrase

S 16 26 36/37/39 45

UN (DOT)

2985

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear chemical goggles and a face shield if splashing is possible. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Fire Fighting Measures

Flash Point

22

Autoignition

355

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. Reacts violently with water. Extinguishing media: Use foam, dry chemical, or carbon dioxide. DO NOT USE WATER!

Upper exp. limit

51.5

Lower exp. limit

1.4

Fire Potential

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Remove all sources of ignition.

Stability and Reactivity

Disposal Code

24

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents, strong acids, moisture.

Decomposition

Hydrogen chloride, carbon monoxide, carbon dioxide, silicon oxide.

Combustion Products

Fire will produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

2985

Hazard Class

3

Packing Group

II

HS Code

2931 00 95