# NIOSH Pocket Guide to Chemical Hazards
Carbon tetrabromide | CAS 558-13-4
CBr4 | RTECS FG4725000
Synonyms & Trade Names Carbon bromide, Methane tetrabromide, Tetrabromomethane | DOT ID & Guide 2516 151
Exposure Limits | NIOSH REL: TWA 0.1 ppm (1.4 mg/m3) ST 0.3 ppm (4 mg/m3)
OSHA PEL†: none
IDLH N.D. | Conversion 1 ppm = 13.57 mg/m3
Physical Description Colorless to yellow-brown crystals with a slight odor.
MW: 331.7 | BP: 374°F | MLT: 194°F | Sol: 0.02%
VP(205°F): 40 mmHg | IP: 10.31 eV |  | Sp.Gr: 3.42
Fl.P: NA | UEL: NA | LEL: NA |
Noncombustible Solid
Incompatibilities & Reactivities Strong oxidizers, hexacyclohexyldilead, lithium
Measurement Methods None available
Personal Protection & Sanitation Skin: No recommendation Eyes: Prevent eye contact Wash skin: Daily Remove: No recommendation Change: Daily Provide: Eyewash | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash promptly Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations To be added later
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, respiratory system; lacrimation (discharge of tears); lung, liver, kidney injury; in animals: corneal damage
Target Organs Eyes, skin, respiratory system, liver, kidneys
See also: INTRODUCTION