NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

Bromoform

CAS
75-25-2

CHBr3

RTECS
PB5600000
Synonyms & Trade Names

Methyl tribromide, Tribromomethane
DOT ID & Guide
2515 / 159

Exposure
Limits

NIOSH REL: TWA 0.5 ppm (5 mg/m3) [skin]
OSHA PEL: TWA 0.5 ppm (5 mg/m3) [skin]
IDLH
850 ppm See: 75252
Conversion
1 ppm = 10.34 mg/m3
Physical Description
Colorless to yellow liquid with a chloroform-like odor. [Note: A solid below 47°F.]
MW: 252.8
BP: 301°F
FRZ: 47°F
Sol: 0.1%
VP: 5 mmHg
IP: 10.48 eV

Sp.Gr: 2.89
Fl.P: NA
UEL: NA
LEL: NA

Noncombustible Liquid
Incompatibilities & Reactivities

Lithium, sodium, potassium, calcium, aluminum, zinc, magnesium, strong caustics, acetone [Note: Gradually decomposes, acquiring yellow color; air & light accelerate decomposition.]
Measurement Methods
NIOSH 1003; OSHA 7
See: NMAM or OSHA Methods
Personal Protection & Sanitation
(See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: No recommendation

First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations
NIOSH/OSHA
Up to 12.5 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)
Up to 25 ppm:
(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and organic vapor cartridge(s)
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Up to 850 ppm:
(APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
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 organic vapor canister/Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
Irritation eyes, skin, respiratory system; central nervous system depression; liver, kidney damage
Target Organs
Eyes, skin, respiratory system, central nervous system, liver, kidneys
See also: INTRODUCTION   See ICSC CARD: 0108