# NIOSH Pocket Guide to Chemical Hazards
Aniline (and homologs) | CAS 62-53-3
C6H5NH2 | RTECS BW6650000
Synonyms & Trade Names Aminobenzene, Aniline oil, Benzenamine, Phenylamine | DOT ID & Guide 1547 153
Exposure Limits | NIOSH REL: Ca See Appendix A
OSHA PEL†: TWA 5 ppm (19 mg/m3) [skin]
IDLH Ca [100 ppm] | Conversion 1 ppm = 3.81 mg/m3
Physical Description Colorless to brown, oily liquid with an aromatic amine-like odor. [Note: A solid below 21°F.]
MW: 93.1 | BP: 363°F | FRZ: 21°F | Sol: 4%
VP: 0.6 mmHg | IP: 7.70 eV |  | Sp.Gr: 1.02
Fl.P: 158°F | UEL: 11% | LEL: 1.3% |
Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
Incompatibilities & Reactivities Strong oxidizers, strong acids, toluene diisocyanate, alkalis
Measurement Methods NIOSH 2002, 2017
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation Provide: Quick drench | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash promptly 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 (gas mask) with a chin-style, front- or back-mounted organic vapor canister/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Headache, lassitude (weakness, exhaustion), dizziness; cyanosis; ataxia; dyspnea (breathing difficulty) on effort; tachycardia; irritation eyes; methemoglobinemia; cirrhosis; [potential occupational carcinogen]
Target Organs Blood, cardiovascular system, eyes, liver, kidneys, respiratory system Cancer Site [bladder cancer]
See also: INTRODUCTION