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2-Aminopyridine

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Synonyms & Trade Names
α-Aminopyridine, α-Pyridylamine
CAS No.
504-29-0
RTECS No.
US1575000
DOT ID & Guide
2671 153
Formula
NH₂C₅H₄N
Conversion
1 ppm = 3.85 mg/m3
IDLH
5 ppm
See: 504290
Exposure Limits
NIOSH REL
TWA 0.5 ppm (2 mg/m3)
OSHA PEL
TWA 0.5 ppm (2 mg/m3)
Measurement Methods
NIOSH S158 (II-4)
See: NMAM or OSHA Methods
Physical Description
White powder, leaflets, or crystals with a characteristic odor.
Molecular Weight
94.1
Boiling Point
411°F
Melting Point
137°F
Solubility
>100%
Vapor Pressure
(77°F): 0.8 mmHg
Ionization Potential
8.00 eV
Specific Gravity
?
Flash Point
154°F
Upper Explosive Limit
?
Lower Explosive Limit
?
Combustible Solid
Incompatibilities & Reactivities
Strong oxidizers
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, nose, throat; headache, dizziness; excitement; nausea; high blood pressure; resp distress; lassitude (weakness, exhaustion); convulsions; stupor
Target Organs
central nervous system, respiratory system
Personal Protection/Sanitation
(See protection codes)
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 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: 0214
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health