Page 214 - Handbook of Hazardous Chemical Properties

204 HYDROGEN BROMIDE
Agents for Acids and Caustics: Flush with water and apply powdered limestone, slaked lime, soda ash,
or sodium bicarbonate; Polymerization: Not pertinent; Inhibitor of Polymerizalion: Not pertinent.

HYDROGEN BROMIDE
Chemical Designations - Synonyms: Hydrobromic acid, anhydrous; Hydrogen bromide, anhydrous;
Chemical Formula: HBr.
Observable Characteristics - Physical State (as shipped): Compressed; liquefied gas; Color:
Colorless; Odor: Sharp, pungent, irritating.
Physical and Chemical Properties - Physical State at 15 'C and 1 atm: Gas; Molecular Weigk
80.92; Boiling Point at 1 arm: -88.2, -66.8, 206.4; Freezing Point: Not pertinent; Critical
Temperature: 193.6, 89.8, 363.0; Critical Pressure: 1,235,84, 8.52; Specific Gravity: 2.14 at -67 "C
(liquid); Vapor (Gas) Specific Gravity: 2.71; Ratio of Specific Heats of Vapor (Gas): 1.38; Latent Heat
of Vaporization: 923, 51.3, 2.15; Heat of Combustion: Not pertinent; Heat ofDecomposition: Not
pertinent.
Health Hazards - Personal Protective Equipment: Full face mask and acid gas canister, self-contained
breathing apparatus: chemical goggles: rubber apron and gloves: acid-proof clothing: safety shower;
SLmptoms Following Exposure: Inhalation causes severe irritation of nose and upper respiratory tract,
lung injury. Ingestion causes burns of mouth and stomach. Contact with eyes causes severe irritation
and burns. Contact with skin causes irritation and burns; Trement for Exposure: Get medical attention
after all overexposure to this chemical. INHALATION: move victim to fresh air and keep him warm
and quiet: if a qualified person is available lo give oxygen, such treatment may be helpful.
INGESTION: give large amounts of water or milk: do not induce vomiting. EYES: flush with water
for at least 15 min. SKIN: flush with water; treat acid burns; Toxicity by Inhalation (ThresholdLimit
Value): 3 ppm; Short-Term Inhalation Limits: 5 ppm for 5 min.; Toxicity by Ingestion: Data not
available; Late Toxicity: Data not available; Vapor (Gas) Irritant Characteristics: Data not available;
Liquid or Solid Zm'tant Characteristics: Data not available; Odor Threshold: Data not available.
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
Hazardr of Combustion Products: Not pertinent; Behavior in Fire: Pressurized containers may explode
and release toxic and irritating vapors; Ignition Temperature : Not pertinent; Electrical Hazard: Not
pertinent; Bunting Rate: Not pertinent.
Chemical Reactivity - Reactivity with Water: Moderate reaction with the evolution of heat; Reactivity
with Common Materials: Rapidly absorbs moisture , forming hydrobromic acid . Highly corrosive to
most metals, with the evolution of flammable and explosive hydrogen gas; Stability During Transport:
Stable; Neutralizing Agents for Acids and Caustics: Flush with water and apply powdered limestone,
slaked lime, soda ash, or sodium bicarbonate; Polymerization: Not pertinent; Inhibitor of
Polymerization: Not pertinent.
HYDROGEN CHLORIDE
Chemical Designations - Synonyms: Hydrochloric acid, anhydrous; Chemical Formula: Hcl.
Observable Characteristics - Physical State (as shipped): Compressed liquefied gas; Color: Colorless
to slightly yellow; Odor: Sharp, pungent, irritating.
Physical and Chemical Properties - Physical State at 15 'C and 1 atm: Gas; Molecular Weight:
36.42; Boiling Point at 1 am: -121, -85.0, 188.2; Freezing Point: -175, -115, 158; Critical
Temperature: 124.5, 51.4, 324.6; Critical Pressure@sia, atm, MN/m2): 1200, 81.6, 8.27; Specific
Gravity: 1.191 at -85°C (liquid); Vapor (Gm) Specipc Gravity: 1.3; Ratio of Specipc Heats of Vapor
(Gas): 1.398; Latent Heat of Vaporization: 185, 103,4.31; Heat of Combustion: Not pertinent; Heat
of Decomposition: Not pertinent.
Health Hazards - Personal Protective Equipment: Full face mask and acid gas canister; self-contained
breathing apparatus; chemical goggles; rubber apron and gloves; acid-proof clothing; safety shower;
Symptoms Following Exposure: Severely irritating to nose and upper respiratory tract; lung injury;
Treatment for Exposure: INHALATION: immediately remove patient to fresh air, keep him warm and