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Bromine

Synonyms & Trade Names
Molecular bromine
CAS No.
7726-95-6
RTECS No.
EF9100000
DOT ID & Guide
1744 154
Formula
Br2
Conversion
1 ppm = 6.54 mg/m3
IDLH
3 ppm
See: 7726956
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)
Measurement Methods

NIOSH 6011;
OSHA ID108
See: NMAM or OSHA Methods
Physical Description
Dark reddish-brown, fuming liquid with suffocating, irritating fumes.
MW:
159.8
BP:
139°F
FRZ:
19°F
Sol:
4%
VP:
172 mmHg
IP:
10.55 eV
Sp.Gr:
3.12
Fl.P:
NA
UEL:
NA
LEL:
NA
Noncombustible Liquid, but accelerates the burning of combustibles.
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.]
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
Target Organs
respiratory system, eyes, central nervous system, skin
Personal Protection/Sanitation
(See protection codes)
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
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

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 0107   See MEDICAL TESTS: 0028
 

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