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HYDROGEN BROMIDE HBr  

General Characteristics
Hydrogen Bromide is a colorless, corrosive, irritating, nonflammable, toxic gas with a suffocating odor. It is shipped as a liquefied gas in steel cylinders under its own vapor pressure.
 
Physical Properties
Molecular Weight 80.914
Flammability Limits in air Nonflammable
Specific Gravity,
Gas @ 70°F(21.1°C), 1 atm(Air=1)
2.79
Density,
Gas @ 70°F(21.1°C), 1 atm
0.209lb/ft^3 (3.35g/l)
Specific Volume, Gas @ 70°F(21.1°C), 1 atm 4.78 ft^3/lb (0.30l/g)
Melting Density @ 75.1 psia (518 kPa) -124.35°F (-86.86°C)
Boiling Point @ 1 atm -88.1°F (-66.72°C)
Critical Temperature 193.6°F (89.8°C)
Critical Pressure 1234.5 psia (85.1 bar)
Toxicity
PEL/TLV 3 ppm
LC50RAT 2880 ppm
IDLH 50 ppm
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