|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Hydrogen bromide | CAS 10035-10-6 | ||
| HBr | RTECS MW3850000 | ||
|
Synonyms & Trade Names Anhydrous hydrogen bromide; Aqueous hydrogen bromide (i.e., Hydrobromic acid) |
DOT ID & Guide 1048 125 (anhydrous) 1788 154 (solution) |
||
|
Exposure Limits |
NIOSH REL: C 3 ppm (10 mg/m3) | ||
| OSHA PEL�: TWA 3 ppm (10 mg/m3) | |||
| IDLH 30 ppm | Conversion 1 ppm = 3.31 mg/m3 | ||
|
Physical Description Colorless gas with a sharp, irritating odor. [Note: Shipped as a liquefied compressed gas. Often used in an aqueous solution.] |
|||
|
MW: 80.9 |
BP: -88°F |
FRZ: -124°F |
Sol: 49% |
|
VP: 20 atm |
IP: 11.62 eV |
RGasD: 2.81 |
|
|
Fl.P: NA |
UEL: NA |
LEL: NA |
|
| Nonflammable Gas | |||
|
Incompatibilities & Reactivities Strong oxidizers, strong caustics, moisture, copper, brass, zinc [Note: Hydrobromic acid is highly corrosive to most metals.] |
|||
|
Measurement Methods NIOSH 7903; OSHA ID165SG |
|
Personal Protection & Sanitation Skin: Prevent skin contact (solution)/Frostbite Eyes: Prevent eye contact (solution)/Frostbite Wash skin: When contaminated (solution) Remove: When wet or contaminated (solution) Change: No recommendation Provide: Eyewash (liquid), Quick drench (solution), Frostbite |
First Aid (See procedures) Eye: Irrigate immediately (solution)/Frostbite Skin: Water flush immediately (solution)/Frostbite Breathing: Respiratory support Swallow: Medical attention immediately (solution) |
|
Respirator Recommendations
NIOSH/OSHA Up to 30 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode�/(APF = 25) Any powered, air-purifying respirator with acid gas cartridge(s)�/(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted acid gas canister/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode/(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus Escape: (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted acid gas canister/Any appropriate escape-type, self-contained breathing apparatus |
|
| Exposure Routes inhalation, ingestion (solution), skin and/or eye contact | |
| Symptoms Irritation eyes, skin, nose, throat; solution: eye, skin burns; liquid: frostbite | |
|
Target Organs
Eyes, skin, respiratory system |
|
| See also: INTRODUCTION |