Page 248 - Handbook of Hazardous Chemical Properties

238 LITHIUMHYDRIDE

pertinent; Critical Pressure: Not pertinent; Specific Gravity: 0.917 at 15 "C (solid); Vapor (Gas)
Specijic Gravity: Not pertinent; Ratio of Specipc Heats of Vapor (Gas): Not pertinent; Lutent Heat of
vaporization: Not pertinent; Heat of Combustion: Not pertinent; Heat ofDecomposition: Not pertinent.
Health Hazards Information -Recommended Personal Protective Equipment: Rubberized gloves; full
face shield; Symptoms Following Exposure: Contact of solid with eyes and skin causes severe burns
similar to those caused by caustic soda; General Treatment for Exposure: In case of accidental contact
with the skin, wipe off excess with a dry paper towel. Wash the affected area with a large volume of
water to prevent localized heating of the skin; Toxicity by Inhalm'on (Threshold Limit Value): Not
pertinent; Short-Tern Inhalm'on Limits: Not pertinent; Toxicity by Ingestion: Data not available; Lute
Toxicity: Data not available; Vapor (Gas) Irritant Characteristics: Not pertinent; Liquid or Solid Irritant
Characteristics: Moisture of skin causes caustic burns; Odor Threshold: Not pertinent.
Fire Hazards - Flash Point : Solid; Flammable Limits in Air (96): Not pertinent; Fire Extinguishing
Agents: Powdered graphite, powdered salt, or powdered limestone; Fire Extinguishing Agents Not To
Be Used: Do not use water, soda acid, carbon dioxide or dry chemical; Special Hazards of Combustion
Products: Data not available; Behavior in Fire: Decomposes at 257 "F to form hydrogen gas. The heat
generated may cause ignition and/or explosion; Ignition Temperature : Data not available; Electrical
Hazard: Class I, Group B; Burning Rate: Not pertinent.
Chemical Reactivity - Reactivity with Water: Reacts violently with water as a dry solid or when
dissolved in ether. The hydrogen produced by the reaction with water is a major hazard and necessitates
adequate ventilation; Reactivity with Common Materials: Can burn in heated or moist air; Stability
During Transport: Normally stable; unstable at high temperatures; Neutralizing Agents for Acids and
Caustics: Not pertinent; Polymrizm'on: Not pertinent; Inhibitor of Polymerizm'on: Not pertinent.

LlTHIuMHYDlUDE
Chemical Designations - Synonym: No common synonyms; Chmical Formula: LiH.
Observable Characteristics - Physical State (as shipped) : Solid; Color: Gray-blue crystalline mass;
finely ground material ranges in color from white to gray; Odor: None.
Physical and Chemical Properties - Physical State at 15 "c and I atm. : Solid; Molecular Weight:
7.95; Boiling Point at I am.: Not pertinent (decomposes); Freezing Poinl: Not pertinent; Critical
Temperature: Not pertinent; Critical Pressure: Not pertinent; Specipc Gravity: 0.78 at 20 "C (solid);
Vapor (Gas) Specific Gravity: Not pertinent; Ratio of Specific Heats of Vapor (Gas): Not pertinent;
Latent Heat of Vaporization: Not pertinent; Heat of Combustion: Not pertinent; Heat of Decomposition:
Not pertinent.
Health Hazards Information -Recommended Personal Protective Equipment: Goggles or face shield;
rubberized gloves; flame proof outer clothing; respirator; high boots or shoes; Symptom Following
Exposure: Inhalation of dust causes coughmg, sneezing, and burning of nose and throat. Ingestion
causes severe burns of mouth and stomach; symptoms of central nervous system damage may occur.
Contact with eyes causes severe caustic burns; General TreatmentforExposure: Lithium hydride burns
of the eyes, skin, or respiratory tract appear to be worse than those caused by an equivalent amount of
sodium hydroxide. INHALATION: remove victim to fresh air; if irritation persists get medical
attention at once. INGESTION: give large volumes of water and milk; gastric lavage may be indicated.
EYES: flush with copious quantities of running water for at least 15 min; get medical attention. SKlN:
flush with water; treat as a caustic bum; ToxiciQ by Inhalation (Threshold Limit Value): 0.025 mg/m3;
Short-Ten Inhalation Limits: Data not available; Toxicity by Ingestion: Data not available; Late
Toxicity: Data not available; Vapor (Gas) Im'tant Characteristics: Data not available; Liquid or Solid
Irritant Characteristics: Data not available; Odor Threshold: Data not available.
Fire Hazards - Flash Point : Not pertinent (combustible solid); Flammable Limits in Air (Z): Not
pertinent; Fire Extinguishing Agents: Dry nitrogen, graphite, or lithium chloride; Fire Extinguishing
Agents Not To Be Used: Never use water, foam, halogenated hydrocarbons, soda acid, dry chemical,
or carbon dioxide; Special Hazards of Combustion Products: Irritating alkali fumes may form in fire;
Behavior in Fire: May decompose when hot to form flammable hydrogen gas. Reacts violently with
water to produce hydrogen, which may explode in air; Ignition Temperature (deg. F): 392; Elecm'cal