Page 62 - Handbook of Hazardous Chemical Properties

52 BORON TRICHLORIDE

attempt to neutralize with chemical agents; obtain medical attention unless burn is minor; Toxicity by
Inhalation (Threshold Limir Value): 10 mg/m3 (as boric oxide); Short-Ten Exposure Limits: Data not
available; Toxicity by Ingestion: Grade 2; oral rat LD,, 2.660 mg/kg; Lafe Toxicity: Data not available;
Vapor (Gas) Irritant Characteristics: Data not available; Liquid or Solid Zm‘tant Characteristics: Data
not available; Odor Threshold: Odorless.
Fire Hazards - Flash Point: Not flammable; Flammable Limits in Air (96): Not flammable; Fire
ExtinguiJhing Agents: Not pertinent; Fire Extinguishing Agents Not To Be Used Not pertinent; Special
Hazards of Combustion Products: Not pertinent; Behavior in Fire: Not pertinent; Ignition Temperature:
Not flammable; Electrical Hazard Not pertinent; Burning Rate: Not flammable.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Commn Materials: No
reactions; Stability During Transport: Stable; Neutralizing Agents forAcids and caustcs: Not pertinent;
Polymerimtion: Not pertinent; Inhibitor of Polymerization: Not pertinent.

BORON TRICHLORIDE
Chemical Designations - Synonyms: Boron Chloride; Chemical Formula: Bcl,,
Observable Characteristics - Physical State (as normally shipped) : Liquid; Color: Colorless; Odor:
Acrid and irritating.
Physical and Chemical Properties - Physical State at 15 “c and I atm. : Gas; Molecular Weight:
117.2; Boiling Point at I am.: 54.3, 12.4, 285.6; Freezing Point: -161, -107, 166; Critical
Temperature: 352, 178, 451; Critical Pressure: 566, 38.5, 3.90; Speciflc Gravity: 1.35 at 11°C
(liquid); Vapor (Gas) Density: 4; Ratio of Specijic Heats of Vapor (Gas): 1.1470; Latent Heat of
Vaporization: 68.8, 38.2, 1.60; Heat of Combustion: Not pertinent; Heat of Decomposition: Not
pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Chemical goggles;
rubber protective clothiig and gloves; self-contained breathing apparatus; Symptoms Following
Exposure: Inhalation causes edema and severe irritation of the upper respiratory system. Contact with
liquid causes acid burns of eyes and severe burns of skin. Ingestion causes severe burns of mouth and
stomach; General Treatment for Exposure: INHALATION: remove to fresh air; give oxygen or apply
artificial respiration; keep warm; call a doctor at once; observe for pulmonary edema. EYES: wash
with plenty of water for 15 min.; consult an eye specialist. SKIN: wash off with plenty of water.
INGESTION: do not induce vomiting; give large amount of water; Toxicity by Inhalation (Threshold
Limit Value) : Data not available; Short-Ten Exposure Limits: Data not available; Toxicity by Ingestion:
Grade 2; LD,, 0.5 to 5 g/kg; Late Toxicity: Data not available; Vapor (Gas) Irritant Characteristics:
Vapors cause severe irritation of eyes and throat and cause eye or lung injury. They cannot be tolerated
even at low concentrations; Liquid or SolidZm*tant Characteristics: Severe skin irritant. Causes second-
and third-degree burns on short contact and is very injurious to the eyes; Odor Threshold Decomposes
in moist air, releasing hydrochloric acid and decomposition products. Hydrochloric acid - 1 ppm.
Fire Hazards - Flash Point: Not flammable; Flammable Limits in Air (96): Not flammable; Fire
Extinguishing Agents: Not pertinent; Fire Extinguishing Agents Not To Be Used Not pertinent; Special
Hazards of Combustion Products: Not pertinent; Behavior in Fire: Toxic fumes of hydrogen chloride
are generated upon contact with water used to fight adjacent fires; Ignition Temperature: Not pertinent;
Electrical Hazard Not pertinent; Burning Rate: Not pertinent.
Chemical Reactivity -Reactivity with Water: Reacts vigorously, liberating heat and forming hydrogen
chloride fumes (hydrochloric acid) and boric acid; Reactivity with Common Materials: Vigorously
attacks elastomers and various packaging materials. Viton, Tygon, silastic elastomers, natural rubber,
some synthetic rubbers are not recommended for service. Avoid lead and graphite impregnated
asbestos. In the presence of moisture this chemical will aggressively attack most metals; Stability
During Transport: Stable; Neutralizing Agents for Acids and Caustics: Flush with water and rinse with
sodium bicarbonate and lime solution; Polymerization: Not pertinent; Inhibitor of Polymerizafion: Not
pertinent.