NIOSH Pocket Guide to Chemical Hazards

4-Aminodiphenyl CAS 92-67-1
C6H5C6H4NH2 RTECS DU8925000
Synonyms & Trade Names
4-Aminobiphenyl, p-Aminobiphenyl, p-Aminodiphenyl, 4-Phenylaniline
DOT ID & Guide
NIOSH REL: Ca See Appendix A
OSHA PEL: [1910.1011] See Appendix B
IDLH Ca [N.D.] Conversion
Physical Description
Colorless crystals with a floral odor. [Note: Turns purple on contact with air.]
MW: 169.2
BP: 576°F
MLT: 127°F
Sol: Slight
VP(227°F): 1 mmHg
IP: ?

Sp.Gr: 1.16
Fl.P: ?
UEL: ?
LEL: ?

Combustible Solid, but must be preheated before ignition possible.
Incompatibilities & Reactivities
Oxidized by air
Measurement Methods
NIOSH P&CAM269 (II-4); OSHA 93
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, dizziness; drowsiness, dyspnea (breathing difficulty); ataxia, lassitude (weakness, exhaustion); methemoglobinemia; urinary burning; acute hemorrhagic cystitis; [potential occupational carcinogen]
Target Organs Bladder, skin

Cancer Site [bladder cancer]