Page 212 - Handbook of Hazardous Chemical Properties

202 HYDRAZINE
HYDRAZINE
Chemical Designations - Synonyms: No common synonyms; Chemical Fonnula: N,&.
Observable Characteristics - Physical State (as shipped): Liquid; Color: Colorless; Odor: Ammonia-
like.
Physical and Chemical Properties - Physical State at 15 "c and I atm. : Liquid; Molecular Weight:
32.05; Boiling Point at I atm.: 236.3, 113.5, 386.7; Freezing Point: 34.7, 1.5, 274.7; Critical
Temperature: 716, 380, 653; Critical Pressure: 2130, 145, 14.7; Specijic Gravity: 1.008 at 20°C,
(liquid); Vapor (Gas) Specijic Gravity: Not pertinent; Ratio of Specijic Heats of Vapor (Gas): 1.191;
Latent Heat of Vaporization: 538, 299, 12.5; Heat of Combustion: -8345, -4636, -194.1; Heat of
Decomposition: Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Ammonia-type gas
mask; self-contained breathing apparatus; plastic-coated or rubber gloves, clothes, and apron; safety
shower must be available; Symptoms Following Exposure: Vapors cause itching, swelling, and
blistering of eyelids, skin, nose and throat; symptoms may be delayed for several hours. Temporary
blindness may occur. Liquid causes a caustic-like burn if not washed off at once. Ingestion or
absorption through skin causes nausea, dizziness, headache. Severe exposure may cause death; General
Treatment for Exposure: Call a doctor at once. INHALATION: remove to fresh air; observe for
development of delayed symptoms. Keep quiet. INGESTION: do NOT induce vomiting; give egg
whites or other emollient. SKIN OR EYES: wash with large amounts of water for at least 15 min.;
Toxicity by Inhalation (Threshold Limit Value): 1 ppm; Short-Tenn Inhalation Limits: 1 pprn for 30
min.; Toxicity by Ingestion: Grade 3; LD,, 50 to 500 mg/kg (rat); Late Toxicity: Causes lung cancer
in mice; Vapor (Gas) Im.tant Characteristics: Vapor is moderately irritating such that personnel will
not usually tolerate moderate or high vapor concentrations; Liquid or Solid Irritant Characteristics:
Severe skin irritant. Causes second- and third-degree burns on short contact; very injurious to the eyes;
Odor Threshold 3 - 4 ppm.
Fire Hazards - Flash Point (deg. F): 100 OC; Flammable Limits in Air (96): 4.7 - 100; Fire
Extinguishing Agents: Water, alcohol foam, dry chemical, or carbon dioxide; Fire Extinguishing Agents
Not To Be Used: Not pertinent; Special Hazara3 of Combustion Proahcts: Toxic vapors are generated
when heated; Behavior in Fire: May explode if confined; Ignition Temperature : May ignite
spontaneously, 518; Electrical Hazard: Not pertinent; Burning Rate: 1 mndmin.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: Can
catch fire when in contact with porous materials such as wood, asbestos, cloth, soil, or rusty metals;
Stability During Transport: Stable at ordinary temperatures, however when heated this material can
decompose to nitrogen and ammonia gases. The decomposition is not generally hazardous unless it
occurs in confrned spaces; Neutralizing Agents forAcids and Caustics: Flush with water and neutralize
the resulting solution with calcium hypochlorite; Polymerization: Not pertinent; Inhibitor of
Polymerization: Not pertinent.
HYDROCHLORIC ACID
Chemical Designations - Synonyms: Muriatic acid; Chemical Fonnula: HCl-H,O.
Observable Characteristics - Physical State (as shipped): Liquid; Color: Colorless to light yellow;
Odor: Pungent; sharp, pungent, irritating.
Physical and Chemical Properties - Physical State at 15 "c and I atm. : Liquid; Molecular Weight:
Not pertinent; Boiling Point UI I arm.: 123, 50.5, 323.8; Freezing Point: Not pertinent; Critical
Temperature: Not pertinent; Critical Pressure: Not pertinent; Specific Gravity: 1.19 at 20°C, (liquid);
Vapor (Gas) Specific Gravity: Not pertinent; Ratio of Specijic Heats of Vapor (Gas): Not pertinent;
Latent Heat of Vaporization: 178, 98.6, 4.13; Heat of Combustion: Not pertinent; Heat of
Decomposition: Not pertinent.
Health Hazards Information -Recommended Personal Protective Equipment: Self-contained breathing
equipment, air-line mask, or industrial canister-type gas mask; rubber-coated gloves, apron, coat,
overalls, shoes; Symptoms Following Exposure: Inhalation of fumes results in coughing and choking
sensation, and irritation of nose and lungs. Liquid causes burns; General Treatment for Exposure: