# NIOSH Pocket Guide to Chemical Hazards
Sodium azide | CAS 26628-22-8
NaN3 | RTECS VY8050000
Synonyms & Trade Names Azide, Azium, Sodium salt of hydrazoic acid | DOT ID & Guide 1687 153
Exposure Limits | NIOSH REL: C 0.1 ppm (as HN3) [skin] C 0.3 mg/m3 (as NaN3) [skin]
OSHA PEL†: none
IDLH N.D. | Conversion
Physical Description Colorless to white, odorless, crystalline solid. [pesticide] [Note: Forms hydrazoic acid (HN3) in water.]
MW: 65.0 | BP: Decomposes | MLT: 527°F (Decomposes) | Sol(63°F): 42%
VP: ? | IP: 11.70 eV |  | Sp.Gr: 1.85
Fl.P: ? | UEL: ? | LEL: ? |
Combustible Solid (if heated above 572°F).
Incompatibilities & Reactivities Acids, metals, water [Note: Over a period of time, sodium azide may react with copper, lead, brass, or solder in plumbing systems to form an accumulation of the HIGHLY EXPLOSIVE compounds of lead azide & copper azide.]
Measurement Methods OSHA ID121, ID211
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: Daily Provide: Eyewash, Quick drench | First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush immediately 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; headache, dizziness, lassitude (weakness, exhaustion), blurred vision; low blood pressure, bradycardia; kidney changes
Target Organs Eyes, skin, central nervous system, cardiovascular system, kidneys
See also: INTRODUCTION