# NIOSH Pocket Guide to Chemical Hazards
Diphenylamine | CAS 122-39-4
(C6H5)2NH | RTECS JJ7800000
Synonyms & Trade Names Anilinobenzene, DPA, Phenylaniline, N-Phenylaniline, N-Phenylbenzenamine [Note: The carcinogen 4-Aminodiphenyl may be present as an impurity in the commercial product.] | DOT ID & Guide
Exposure Limits | NIOSH REL: TWA 10 mg/m3
OSHA PEL†: none
IDLH N.D. | Conversion
Physical Description Colorless, tan, amber, or brown crystalline solid with a pleasant, floral odor. [fungicide]
MW: 169.2 | BP: 576°F | MLT: 127°F | Sol: 0.03%
VP(227°F): 1 mmHg | IP: 7.40 eV |  | Sp.Gr: 1.16
Fl.P: 307°F | UEL: ? | LEL: ? |
Combustible Solid; explosive if a cloud of dust is exposed to a source of ignition.
Incompatibilities & Reactivities Oxidizers, hexachloromelamine, trichloromelamine
Measurement Methods OSHA 22, 78
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: Daily Remove: When wet or contaminated Change: Daily | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash promptly Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations To be added later
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, mucous membrane; eczema; tachycardia, hypertension; cough, sneezing; methemoglobinemia; increased blood pressure, heart rate; proteinuria, hematuria (blood in the urine), bladder injury; in animals: teratogenic effects
Target Organs Eyes, skin, respiratory system, cardiovascular system, blood, bladder, reproductive system
See also: INTRODUCTION