Product Identification

Product Name

(Chloromethyl)trichlorosilane

Synonyms

(Chloromethyl)trichlorosilane
Silane CM

CAS

1558-25-4

Formula

CH2Cl4Si

Molecular Weight

183.92

EINECS

216-316-9

RTECS

VV2200000

RTECS Class

Other

Beilstein/Gmelin

1811640

Beilstein Reference

4-01-00-03074

Physical and Chemical Properties

Appearance

Clear, colorless liquid.

Solubility in water

Reacts

Boiling Point

117

Density

1.442 g/cm3 (20 C)

Vapor Density

6.3

Refractive Index

1.453 (20 C)

First Aid Measures

Ingestion

Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.

Inhalation

If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.

Skin

Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.

Eyes

If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.

Handling and Storage

Storage

Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.

Handling

All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.

Hazards Identification

Ingestion

See inhalation.

Inhalation

(Non-Specific -- Methyl Trichlorosilane) If inhaled, may be harmful; contact may cause burns to skin and eyes. Runoff from fire control or dilution water may cause pollution.

Skin

See inhalation.

Eyes

See inhalation

EC Risk Phrase

R 14 24 26 34

EC Safety Phrase

S 26 28 36/37/39 45

UN (DOT)

2922

Exposure Controls/Personal Protection

Personal Protection

Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.

Respirators

Use NIOSH/MSHA approved respirator appropriate for exposure of concern.

Fire Fighting Measures

Flash Point

69

Fire Fighting

(Non-specific -- Methyl Trichlorosilane) Move container from fire area if you can do it without risk. Do not get water inside container. Cool containers that are exposed to flames with water from the side until well after fire is out. Stay away from ends of tanks. Withdraw immediately in case of rising sound from venting safety device or any discoloration of tank due to fire.(Non-Specific -- Methyl Trichlorosilane) Small fires: Dry chemical, carbon dioxide, halon, water spray, or standard foam. Large fires: Water spray, fog, or standard foam is recommended.

Accidental Release Measures

Small spills/leaks

Caution : Extremely flammable; may spontaneously ignite. Avoid sources of extreme heat or ignition including sparks or fire. Trichloro (chloromethyl) silane will liberate hydrochloric acid upon contact with water. (Non-Specific -- Methyl Trichlorosilane) Keep unnecessary people away; isolate hazard area and deny entry. Stay upwind; keep out of low areas. If water pollution occurs, notify appropriate authorities. Shut off ignition sources; no flares, smoking or flames in hazard area. Do not touch spilled material; stop leak if you can do so without risk. Use water spray to reduce vapors; do not get water inside container. Small spills: flush area with flooding amounts of water. Large spills: dike far ahead of spill for later disposal.

Stability and Reactivity

Stability

No data.

Transport Information

UN Number

2922