# NIOSH Pocket Guide to Chemical Hazards
alpha-Naphthylamine | CAS 134-32-7
C10H7NH2 | RTECS QM1400000
Synonyms & Trade Names 1-Aminonaphthalene, 1-Naphthylamine | DOT ID & Guide 2077 153
Exposure Limits | NIOSH REL: Ca See Appendix A
OSHA PEL: [1910.1004] See Appendix B
IDLH Ca [N.D.] | Conversion
Physical Description Colorless crystals with an ammonia-like odor. [Note: Darkens in air to a reddish-purple color.]
MW: 143.2 | BP: 573°F | MLT: 122°F | Sol: 0.002%
VP(220°F): 1 mmHg | IP: 7.30 eV |  | Sp.Gr: 1.12
Fl.P: 315°F | UEL: ? | LEL: ? |
Combustible Solid
Incompatibilities & Reactivities Oxidizes in air
Measurement Methods NIOSH 5518; 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 Dermatitis; hemorrhagic cystitis; dyspnea (breathing difficulty), ataxia, methemoglobinemia; hematuria (blood in the urine); dysuria; [potential occupational carcinogen]
Target Organs Bladder, skin Cancer Site [bladder cancer]
See also: INTRODUCTION