Trichloro(chloromethyl)silane

  • (Chloromethyl)trichlorosilane
Formula
CH2Cl4Si
Structure
Description
Clear, colorless liquid.

Registry Numbers and Inventories.
CAS
1558-25-4
EC (EINECS/ELINCS)
216-316-9
R 14 24 26 34
S 26 28 36/37/39 45
RTECS
VV2200000
RTECS class
Other
UN (DOT)
2922
Beilstein/Gmelin
1811640
Beilstein Reference
4-01-00-03074
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
CH2Cl4Si
Formula mass
183.92
Boiling point, °C
117
Vapor density (air=1)
6.3
Density
1.442 g/cm3 (20 C)
Solubility in water
Reacts
Refractive index
1.453 (20 C)

Hazards and Protection.
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.
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.
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
No data.

Fire.
Flash Point,°C
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.
Health
3
 
Flammability
2
 
 
Reactivity
0
 

Health.
Exposure effects
   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

First aid
 
   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.

Transport.
UN number
2922
Response guide
USCG CHRIS Code
TMS