Page 173 - Handbook of Hazardous Chemical Properties

ETHYLDICHLOROSILANE 163

pertinent.

ETHYL, CHLOROFORMATE
Chemical Designations - Synonyms: Chloroformic acid, ethyl ester; Ethyl chlorocarbonate; Chemical
Formula: CICOOC,H,,
Observable Characteristics - Physical State (as normally shipped): Liquid; Color: Colorless to pale
yellow; Odor: Irritating; sharp, like hydrochloric acid.
Physical and Chemical Properties - Physical State at 15 “c and I atm. : Liquid; Molecular Weight:
108.5; Boiling Point at I atm.: 201, 94, 367; Freezing Point: -114, -81, 192; Critical Temperature:
Not pertinent; Critical Pressure: Not pertinent; Specific Gmvity: 1.135 at 20°C (liquid); Vapor (Gas)
Density: 3.7; Ratio of Specific Heats of Vapor (Gas): 1.1044; Latent Heat of Vaporization: (est.) 140,
79, 3.3; Heat of Combustion: (est.) -6,900, -3,800, -160; Heat of Decomposition: Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Air-line mask, self-
contained breathing apparatus, or organic and canister mask; full protective clothing; Symptoms
Following fiposure: Inhalation causes mucous membrane irritation, coughmg, and sneezing. Vapor
causes acid-type burns of mouth and stomach; General Treatment for Exposure: INHALATION:
remove patient to fresh air; if breathing stops give artificial respiration. Call a doctor, keep victim quiet
and administer oxygen if needed. EYES: flush with water for at least 15 min.; see a doctor. SKIN:
wash liberally with water for at least 15 min., then apply dilute solution of sodium bicarbonate or
commercially prepared neutralizer. INGESTION: do NOT induce vomiting; give large amount of
water; get medical attention; Toxicity by Inhalation (Threshold Limit Value): Data not available; Short-
Term Exposure Limits: Data not available; Toxicity by Ingestion: Grade 4; oral LD,, < 50 mg/kg (rat);
Late Toxicity: Data not available; Vapor (Gas) Irritant Characteristics: Vapors are moderately irritating
such the personnel will not usually tolerate moderate or high concentration; Liquid or Solid Irritant
Characteristics: Causes smarting of the skin and first-degree burns on short Exposure and may cause
second-degree burns on long Exposure; Odor 77zreshold Data not available.
Fire Hazards -Flash Point (deg. F): 82 OC; 61 CC; FlammableLimits in Air (%): Data not available;
Fire Extinguishing Agents: Water, dry chemical, carbon dioxide; Fire Extinguishing Agents Not To Be
Used: Not pertinent; Special Hazards of Combustion Products: Toxic chlorine and phosgene gas may
be formed in fires; Behavior in Fire: Not pertinent; Ignition Temperature (deg. F): 932; Electrical
Hazard: Data not available; Burning Rate: No data.
Chemical Reactivity - Reactivity with Water: Slow reaction with water, evolving hydrogen chloride
(hydrochloric acid); Reactivity with Common Materials: Slow evolution of hydrogen chloride from
surface moisture reaction can cause slow corrosion; Stability During Transport: Stable; Neutralizing
Agents for Acids and Caustics: Flush with water, rinse with sodium bicarbonate or lime solution;
Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

ETHYLDICHLOROSILANE
Chemical Designations - Synonyms: No common synonyms; Chemical Formula: C,H,SiHCb,
Observable Characteristics - Physical State (as normally shipped): Liquid; Color: Colorless; Odor:
Sharp, hydrochloric acid-like; acrid.
Physical and Chemical Properties - Physical State at 15 “c and I atm. : Liquid; Molecular Weight:
129.1; Boiling Point at I am.: 165,74,347; Freezing Point: Not pertinent; Critical Temperature: Not
pertinent; Critical Pressure: Not pertinent; Specific Gravity: 1.092 at 20°C (liquid); Vapor (Gas)
Density: 4.5; Ratio of SpeciBc Heats of Vapor (Gas): Data not available; Latent Heat of Vqoiization:
(est.) 104, 57.8, 2.42; Heat of Combustion: (est.) -6,500. -3,600, -150; Heat of Decomposition: Not
pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Acid-vapor-type
respiratory protection; rubber gloves; chemical worker’s goggles; other equipment as necessary to
protect skin and eyes; Symptoms Following Exposure: Inhalation irritates mucous membranes. Contact
with liquid causes severe burns of eyes and skin. Ingestion causes severe burns of mouth and stomach;
General Treatment for Exposure: Get medical attention following all Exposures to this compound.