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p-Nitroaniline

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Synonyms & Trade Names
para-Aminonitrobenzene, 4-Nitroaniline, 4-Nitrobenzenamine, p-Nitrophenylamine, PNA
CAS No.
100-01-6
RTECS No.
BY7000000
DOT ID & Guide
1661 153
Formula
NO₂C₆H₄NH₂
Conversion
IDLH
300 mg/m3
See: 100016
Exposure Limits
NIOSH REL
TWA 3 mg/m3 [skin]
OSHA PEL
TWA 6 mg/m3 (1 ppm) [skin] See Appendix G
Measurement Methods
NIOSH 5033
See: NMAM or OSHA Methods
Physical Description
Bright yellow, crystalline powder with a slight ammonia-like odor.
Molecular Weight
138.1
Boiling Point
630°F
Melting Point
295°F
Solubility
0.08%
Vapor Pressure
0.00002 mmHg
Ionization Potential
8.85 eV
Specific Gravity
1.42
Flash Point
390°F
Upper Explosive Limit
?
Lower Explosive Limit
?
Combustible Solid
Incompatibilities & Reactivities
Strong oxidizers, strong reducers [Note: May result in spontaneous heating of organic materials in the presence of moisture.]
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation nose, throat; cyanosis, ataxia; tachycardia, tachypnea; dyspnea (breathing difficulty); irritability; vomiting, diarrhea; convulsions; resp arrest; anemia; methemoglobinemia; jaundice
Target Organs
respiratory 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
Change:Daily
Provide:Quick drench
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Water flush immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

NIOSH

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

Escape:
(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

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0308   MEDICAL TESTS: 0160
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health