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| Bromine | CAS 7726-95-6 | ||
| Br2 | RTECS EF9100000 | ||
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Synonyms & Trade Names Molecular bromine |
DOT ID & Guide 1744 154 |
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Exposure Limits |
NIOSH REL: TWA 0.1 ppm (0.7 mg/m3) ST 0.3 ppm (2 mg/m3) | ||
| OSHA PEL�: TWA 0.1 ppm (0.7 mg/m3) | |||
| IDLH 3 ppm | Conversion 1 ppm = 6.54 mg/m3 | ||
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Physical Description Dark reddish-brown, fuming liquid with suffocating, irritating fumes. |
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MW: 159.8 |
BP: 139°F |
FRZ: 19°F |
Sol: 4% |
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VP: 172 mmHg |
IP: 10.55 eV |
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Sp.Gr: 3.12 |
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Fl.P: NA |
UEL: NA |
LEL: NA |
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| Noncombustible Liquid, but accelerates the burning of combustibles. | |||
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Incompatibilities & Reactivities Combustible organics (sawdust, wood, cotton, straw, etc.), aluminum, readily oxidizable materials, ammonia, hydrogen, acetylene, phosphorus, potassium, sodium [Note: Corrodes iron, steel, stainless steel & copper.] |
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Measurement Methods NIOSH 6011; OSHA ID108 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation Provide: Eyewash, Quick drench |
First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash immediately Breathing: Respiratory support Swallow: Medical attention immediately |
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Respirator Recommendations
NIOSH/OSHA Up to 2.5 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode�/(APF = 25) Any powered, air-purifying respirator with cartridge(s) providing protection against the compound of concern�� Up to 3 ppm: (APF = 50) Any chemical cartridge respirator with a full facepiece and cartridge(s) providing protection against the compound of concern�/(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern�/(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and cartridge(s) providing protection against the compound of concern��/(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 canister providing protection against the compound of concern�/Any appropriate escape-type, self-contained breathing apparatus |
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| Exposure Routes inhalation, ingestion, skin and/or eye contact | |
| Symptoms Dizziness, headache; lacrimation (discharge of tears), epistaxis (nosebleed); cough, feeling of oppression, pulmonary edema, pneumonitis; abdominal pain, diarrhea; measle-like eruptions; eye, skin burns | |
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Target Organs
respiratory system, eyes, central nervous system, skin |
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| See also: INTRODUCTION |