NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

Chlorobenzene

CAS
108-90-7

C6H5Cl

RTECS
CZ0175000
Synonyms & Trade Names

Benzene chloride, Chlorobenzol, MCB, Monochlorobenzene, Phenyl chloride
DOT ID & Guide
1134 / 130

Exposure
Limits

NIOSH REL: See Appendix D
OSHA PEL: TWA 75 ppm (350 mg/m3)
IDLH
1000 ppm See: 108907
Conversion
1 ppm = 4.61 mg/m3
Physical Description
Colorless liquid with an almond-like odor.
MW: 112.6
BP: 270°F
FRZ: -50°F
Sol: 0.05%
VP: 9 mmHg
IP: 9.07 eV

Sp.Gr: 1.11
Fl.P: 82°F
UEL: 9.6%
LEL: 1.3%

Class IC Flammable Liquid: Fl.P. at or above 73F and below 100F.
Incompatibilities & Reactivities

Strong oxidizers
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 (flammable)
Change: No recommendation

First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations
OSHA
Up to 1000 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)
(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 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 organic vapor canister/Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
Irritation eyes, skin, nose; drowsiness, incoordination; central nervous system depression; in animals: liver, lung, kidney injury
Target Organs
Eyes, skin, respiratory system, central nervous system, liver
See also: INTRODUCTION   See ICSC CARD: 0642   See MEDICAL TESTS: 0253