Synonyms & Trade Namespara-Aminonitrobenzene, 4-Nitroaniline, 4-Nitrobenzenamine, p-Nitrophenylamine, PNA
NIOSH RELTWA 3 mg/m3 [skin]
OSHA PELTWA 6 mg/m3 (1 ppm) [skin] See Appendix G
Physical DescriptionBright yellow, crystalline powder with a slight ammonia-like odor.
Vapor Pressure0.00002 mmHg
Ionization Potential8.85 eV
Upper Exposive Limit?
Lower Explosive Limit?
Incompatibilities & ReactivitiesStrong oxidizers, strong reducers [Note: May result in spontaneous heating of organic materials in the presence of moisture.]
Exposure Routesinhalation, skin absorption, ingestion, skin and/or eye contact
Symptomsirritation nose, throat; cyanosis, ataxia; tachycardia, tachypnea; dyspnea (breathing difficulty); irritability; vomiting, diarrhea; convulsions; resp arrest; anemia; methemoglobinemia; jaundice
Target Organsrespiratory system, blood, heart, liver
Personal Protection/Sanitation(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated/Daily
Remove:When wet or contaminated
First Aid(See procedures)
Skin:Water flush immediately
Swallow:Medical attention immediately
Up to 30 mg/m3:
(APF = 10) Any supplied-air respirator*
Up to 75 mg/m3:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
Up to 150 mg/m3:
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Up to 300 mg/m3:
(APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
Emergency or planned entry into unknown concentrations or IDLH conditions:
(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
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division