Page 268 - Handbook of Hazardous Chemical Properties

258 METJXYLDICHLOROSILANE

with water for 15 min.; call physician. SKIN: flush with water, then wash with soap and water.
INGESTION: do NOT induce vomiting; guard against aspiration into lungs. ASPIRATION: enforce
bed rest; give oxygen; seek medical attention; Toxicity by Inhalation: No data; Short-Term Inhalation
Limits: 300 ppm for 60 min.; Toxicity by Ingestion: Grade 1; LD,, 5 to 15 g/kg; Late Toxicity: No data;
Vqor (Gas) Irritant Characteristics: Vapors are nonirritating to the eyes and throat; Liquid or Solid
Irritant Characteristics: If spilled on clothing and allowed to remain, may cause smarting and reddening
of skin; Odor llreshold No data.
Fire Hazards - Fhh Point (deg. F): < 0 CC; Flammable Limits in Air (%): 1.1 - 8.7; Fire
Extinguishing Agents: Dry chemical, foam, carbon dioxide; Fire Extinguishing Agents Not To Be Used:
Water may be ineffective; Special Hazards of Combustion Products: Not pertinent; Behavior in Fire:
Vapor is heavier than air and may travel a considerable distance to a source of ignition and flash back;
Ignition Temperature (deg. F): 624; Electrical Hazard: No data; Burning Rate: 7.1 dmin.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: No
reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent;
Polymerization: Not pertinent; Inhibitor of Polymerizalion: Not pertinent.

METHYLDICHLOROSILANE
Chemical Designations - Synonyms: No common synonyms; Chemical Formula: CH,SiHCl,.
Observable Characteristics - Physical State (as shipped) : Liquid; Color: Colorless; Odor: Acrid;
sharp, hydrochloric acid-like.
Physical and Chemical Properties - Physical State at I5 'C and I atm. : Liquid; Molecular Weight:
115; Boiling Point at I atm.: 106.7,41.5,314.7; Freezing Point: -135, -93, 180; Critical Temperature:
Not pertinent; Critical Pressure: Not pertinent; Specific Gravity: 1.11 at 25 "C (liquid); Vapor (Gas)
Specipc Gravity: 4; Ratio of Specijk Heats of Vapor (Gas): Data not available; Latent Heat of
Vqorim'on: 106, 59, 2.5; Heat of Combustion: (est.) -4,700, -2,600, -1 10; Heat ofDecomposition:
Not pertinent.
Health Hazards Information -Recommended Personal Protective Equipment: Full protective clothing;
acid-vapor-type respiratory protection; rubber gloves; chemical worker's goggles; other protective
equipment as necessary to protect skin and eyes; Symptoms Following Exposure: Inhalation causes
irritation of respiratory tract; heavy exposure can cause pulmonary edema. Contact of liquid with skin
or eyes causes severe burns. Ingestion causes burns of mouth and stomach; General Treatment for
Exposure: Get medical attention following all exposure to this compound. INHALATION remove
victim from exposure; if breathing has stopped, begin artificial respiration. EYES: flush with water for
15 min. SKIN: flush with water. INGESTION: do NOT induce vomiting; give large amounts of water;
Toxicity by Inhalation (Threshold Limit Value) : Data not available; Short-Tern Inhalation Limits: Data
not available; Toxicity by Ingestion: Grade 3; LD,, 50 to 500 mg/kg; Lute Toxicity: Data not available;
Vapor (Gas) Im'tant Characteristics: Vapors cause severe irritation of eye and throat and can cause eye
and lung injury. They cannot be tolerated even at low concentrations; Liquid or Solid Irritant
Characteristics: Severe skin irritant. Causes second- and third-degree bums on short contact and is very
injurious to the eyes; Odor Threshold: Data not available.
Fire Hazards -Flash Point (deg. F): - 14 OC; Flammable Limits in Air (%): 6 - 55; Fire Extinguishing
Agents: Dry chemical or carbon dioxide; Fire Extinguishing Agents Not To Be Used: Water, foam;
&ecial Hazards of Combustion Products: Toxic hydrogen chloride and phosgene gases may be formed;
Behavior in Fire: Difficult to extinguish; re-ignition may occur. Contact with water, applied to adjacent
fires will generate irritating hydrogen chloride gas; Ignition Temperature (deg. F): > 600; Electrical
Hazard: Data not available; Burning Rate: 3.0 mm/min.
Chemical Reactivity - Reactivity with Water: Reacts violently to form hydrogen chloride (hydrochloric
acid); Reactivity with Common Materials: Reacts with surface moisture to evolve hydrogen chloride,
which is corrosive to common metals; Stability During Transport: Stable; Neutralizing Agents for Acids
und Caustics: Flood with water, rinse with sodium bicarbonate or lime solution; Polymerization: Not
pertinent; Inhibitor of Polymerization: Not pertinent.