NIOSH Pocket Guide to Chemical Hazards

Sodium azide

CAS 26628-22-8


RTECS VY8050000
Synonyms & Trade Names
Azide, Azium, Sodium salt of hydrazoic acid
DOT ID & Guide
1687 153


NIOSH REL: C 0.1 ppm (as HN3) [skin] C 0.3 mg/m3 (as NaN3) [skin]
OSHA PEL†: none
IDLH N.D. See: IDLH INDEX 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
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
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
Important additional information about respirator selection
Respirator Recommendations Not available.
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   See ICSC CARD: 0950