NIOSH Pocket Guide to Chemical Hazards

2-Aminopyridine CAS 504-29-0
NH2C5H4N RTECS US1575000
Synonyms & Trade Names
alpha-Aminopyridine, alpha-Pyridylamine
DOT ID & Guide
2671 153
NIOSH REL: TWA 0.5 ppm (2 mg/m3)
OSHA PEL: TWA 0.5 ppm (2 mg/m3)
IDLH 5 ppm Conversion 1 ppm = 3.85 mg/m3
Physical Description
White powder, leaflets, or crystals with a characteristic odor.
MW: 94.1
BP: 411°F
MLT: 137°F
Sol: >100%
VP(77°F): 0.8 mmHg
IP: 8.00 eV

Sp.Gr: ?
Fl.P: 154°F
UEL: ?
LEL: ?

Combustible Solid
Incompatibilities & Reactivities
Strong oxidizers
Measurement Methods
NIOSH S158 (II-4)
Personal Protection & Sanitation
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
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/OSHA
Up to 5 ppm: (APF = 10) Any supplied-air respirator*/(APF = 50) Any self-contained breathing apparatus with a full facepiece
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 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 Irritation eyes, nose, throat; headache, dizziness; excitement; nausea; high blood pressure; respiratory distress; lassitude (weakness, exhaustion); convulsions; stupor
Target Organs central nervous system, respiratory system