SODIUM AZIDE

International Chemical Safety Cards

SODIUM AZIDE

ICSC: 0950

SODIUM AZIDE
Azide
Azium
NaN₃
Molecular mass: 65.02
CAS # 26628-22-8
RTECS # VY8050000
ICSC # 0950
UN # 1687
EC # 011-004-00-7

TYPES OF HAZARD/ EXPOSURE	ACUTE HAZARDS/ SYMPTOMS	PREVENTION	FIRST AID/ FIRE FIGHTING
FIRE	Decomposes on heating.	NO contact with acids, heavy metals.	Dry sand, special powder.
EXPLOSION	Risk of fire and explosion on contact with acids and many metals (lead, brass, copper, mercury, silver).	Do NOT expose to friction or shock.	In case of fire: keep drums, etc., cool by spraying with water.

EXPOSURE		STRICT HYGIENE!
INHALATION	Cough. Headache. Shortness of breath. Unconsciousness. Nasal stuffiness. Blurred vision. Slowing heart beat. Fall in blood pressure.	Local exhaust or breathing protection.	Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.
SKIN	MAY BE ABSORBED! Redness. Blisters.	Protective gloves.	Remove contaminated clothes. Rinse skin with plenty of water or shower.
EYES	Redness. Pain.	Safety goggles, or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
INGESTION	Abdominal pain. Nausea. Sweating (further see Inhalation).	Do not eat, drink, or smoke during work.	Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Rest. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Consult an expert! Sweep spilled substance into plastic containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place (extra personal protection: complete protective clothing including self-contained breathing apparatus).

Fireproof. Separated from acids, food and feedstuffs, metals, especially lead and its compounds.

Do not transport with food and feedstuffs.
T+ symbol
R: 28-32
S: (1/2-)28-45
UN Hazard Class: 6.1
UN Packing Group: II

SEE IMPORTANT INFORMATION ON BACK

ICSC: 0950

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

SODIUM AZIDE

ICSC: 0950

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PHYSICAL STATE; APPEARANCE:
ODOURLESS COLOURLESS HEXAGONAL CRYSTALS.

PHYSICAL DANGERS:

CHEMICAL DANGERS:
May explode on heating above melting point, especially on rapid heating , causing fire and explosion hazard. The solution in water is a weak base. Reacts with copper, lead, silver, mercury and carbon disulfide to form particularly shock-sensitive compounds. Reacts with acids, forming toxic and explosive hydrogen azide.

OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV (as (ceiling values)): 0.11 ppm as hydrazoic acid vapour ppm; 0.29 mg/m³ as sodium azide (ACGIH 1996).

ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

INHALATION RISK:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes, the skin and the respiratory tract. Exposure slightly above OEL could cause effects on the nervous system.

PHYSICAL
PROPERTIES

Decomposes below melting point at 275°C
Relative density (water = 1): 1.8475

Solubility in water, g/100 ml at 17°C: 41.7
Solubility in water: good (41.7 g/100 ml water at 17°C)