NIOSH Pocket Guide to Chemical Hazards

4-Nitrobiphenyl CAS 92-93-3
C6H5C6H4NO2 RTECS DV5600000
Synonyms & Trade Names
p-Nitrobipheny, p-Nitrodiphenyl, 4-Nitrodiphenyl, p-Phenylnitrobenzene, 4-Phenylnitrobenzene, PNB
DOT ID & Guide
NIOSH REL: Ca See Appendix A
OSHA PEL: [1910.1003] See Appendix B
IDLH Ca [N.D.] Conversion
Physical Description
White to yellow, needle-like, crystalline solid with a sweetish odor.
MW: 199.2
BP: 644°F
MLT: 237°F
Sol: Insoluble
VP: ?
IP: ?

Sp.Gr: ?
Fl.P: 290°F
UEL: ?
LEL: ?

Combustible Solid
Incompatibilities & Reactivities
Strong reducers
Measurement Methods
Personal Protection & Sanitation
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated/Daily
Remove: When wet or contaminated
Change: Daily
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
At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration: (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 with a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Headache, drowsiness, dizziness; dyspnea (breathing difficulty); ataxia, lassitude (weakness, exhaustion); methemoglobinemia; urinary burning; acute hemorrhagic cystitis; [potential occupational carcinogen]
Target Organs Bladder, blood

Cancer Site [in animals: bladder tumors]