September 2010

NIOSH Publication Number 2010-168c

Sodium azide
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				Measurement Methods OSHA ID121 , ID211
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.]
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 See ICSC CARD: 0950