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Sodium azide

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Synonyms & Trade Names
Azide, Azium, Sodium salt of hydrazoic acid
CAS No.
26628-22-8
RTECS No.
VY8050000
DOT ID & Guide
1687 153
Formula
NaN₃
Conversion
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
C 0.1 ppm (as HN3) [skin] C 0.3 mg/m3 (as NaN3) [skin]
OSHA PEL
none See Appendix G
Measurement Methods
OSHA ID121 , ID211
See: NMAM or OSHA Methods
Physical Description
Colorless to white, odorless, crystalline solid. [pesticide] [Note: Forms hydrazoic acid (HN3) in water.]
Molecular Weight
65.0
Boiling Point
Decomposes
Melting Point
527°F (Decomposes)
Solubility
(63°F): 42%
Vapor Pressure
?
Ionization Potential
11.70 eV
Specific Gravity
1.85
Flash Point
?
Upper Explosive Limit
?
Lower Explosive Limit
?
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.]
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
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:Eyewash, Quick drench
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Water flush immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0950
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health