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26628-22-8

Basic Information
CAS No.: 26628-22-8
Name: Sodium azide
Molecular Structure:
Molecular Structure of 26628-22-8 (Sodium azide)
Formula: NaN3
Molecular Weight: 65.0099
Synonyms: Sodium, azoturo di [Italian];Azide, sodium;sodiumazide;Sodium, azoture de [French];azide;Natriummazide [Dutch];RCRA waste no. P105;Nemazyd;Hydrazoic acid, sodium salt;Sodium azide (NaN3);Azydek sodu [Polish];RCRA waste number P105;Sodium azide (Na(N3));Sodium azide [UN1687] [Poison];EPA Pesticide Chemical Code 107701;Kazoe;Natriumazid [German];NCI-C06462;U-3886;NSC-3072;
EINECS: 247-852-1
Density: 1.846 g/cm3
Melting Point: 275 °C
Boiling Point: 300 °C(dec.)
Flash Point: 300°C
Solubility: 420 g/L (17 °C) in water
Appearance: colorless crystalline solid
Hazard Symbols: HarmfulXn,ToxicT,DangerousN,VeryT+
Risk Codes: 28-32-50/53-52/53-22
Safety: 61-60-45-28A-28
Transport Information: UN 1687 6.1/PG 2
PSA: 49.75000
LogP: 0.21376
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    Sodium azide

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Chemistry

Molecular structure of Sodium azide (CAS NO.26628-22-8) is:

Product Name: Sodium azide
CAS Registry Number: 26628-22-8
IUPAC Name: Sodium azide
Molecular Weight: 65.00987 [g/mol]
Molecular Formula: N3Na
H-Bond Donor: 0
H-Bond Acceptor: 2 
EINECS: 247-852-1
Density: 1.846
Melting point: 275 °C
Boiling point: 300 °C(dec.)
Water solubility: 420 g/L (17 °C)
Flash Point: 300 °C
Sensitive: Air & Moisture Sensitive
Stability: Unstable. Avoid heat, sources of ignition, moisture, shock, friction. Incompatible with strong oxidizing agents, mineral acids, water, halogen acids and halogen compounds, barium carbonate, bromine, carbon disulphide, mercury, dimethyl sulphate, common metals, especially brass, copper, lead, silver, strong acids.
Product Categories: Sodium azide;Inorganics;Classes of Metal Compounds;Na (Sodium) Compounds (excluding simple sodium salts);Typical Metal Compounds;Azidation/Diazo TransferChemical Ligation;Azide SourcesMetal and Ceramic Science;Click Chemistry;Salts;Sodium Salts;Superoxide dismutase;R to;Azidation/Diazo Transfer;C-X Bond Formation (Non-Halogen);Synthetic Reagents;Azidation/Diazo TransferEnzyme Inhibitors by Enzyme;Peroxidase Inhibitors;P to;Azidation/Diazo TransferPesticides&Metabolites;Herbicides

Uses

 Sodium azide (CAS NO.26628-22-8) is a useful probe reagent, mutagen, and preservative. It is used in organic synthesis to introduce the azide functional group by displacement of a primary halide.Also it is used for the preparation of other azide compounds.And it can beused in automobile airbags and airplane escape chutes, Organic synthesis and Inorganic synthesis.It has a use in biochemistry and biomedical.

Production

The common synthesis method is the "Wislicenus process," which proceeds in two steps from ammonia. 
          2 Na + 2 NH3 → 2 NaNH2 + H2
The Sodium azide (CAS NO.26628-22-8) is subsequently combined with nitrous oxide:
          2 NaNH2 + N2O → NaN3 + NaOH + NH3

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
bird - wild LD50 oral 23700ug/kg (23.7mg/kg)   Archives of Environmental Contamination and Toxicology. Vol. 12, Pg. 355, 1983.
 
human TDLo oral 710ug/kg (0.71mg/kg) BEHAVIORAL: GENERAL ANESTHETIC

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

KIDNEY, URETER, AND BLADDER: OTHER CHANGES
Journal of Clinical Pathology. Vol. 28, Pg. 350, 1975.
 
man LDLo oral 29mg/kg (29mg/kg) BRAIN AND COVERINGS: INCREASED INTRACRANIAL PRESSURE

CARDIAC: PULSE RATE

LUNGS, THORAX, OR RESPIRATION: ACUTE PULMONARY EDEMA
Medical Toxicology and Adverse Drug Experience. Vol. 4, Pg. 219, 1989.
 
man LDLo oral 129mg/kg (129mg/kg) BEHAVIORAL: COMA

CARDIAC: PULSE RATE

CARDIAC: OTHER CHANGES
Journal of Analytical Toxicology. Vol. 20, Pg. 134, 1996.
 
man LDLo oral 143mg/kg (143mg/kg) SENSE ORGANS AND SPECIAL SENSES: MYDRIASIS (PUPILLARY DILATION): EYE

BEHAVIORAL: IRRITABILITY

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
Journal of Toxicology, Clinical Toxicology. Vol. 24, Pg. 339, 1986.
 
man TDLo oral 129ug/kg (0.129mg/kg) CARDIAC: PULSE RATE INCREASE WITHOUT FALL IN BP

VASCULAR: BP LOWERING NOT CHARACTERIZED IN AUTONOMIC SECTION

BLOOD: CHANGES IN SPLEEN
Gekkan Yakuji. Pharmaceuticals Monthly. Vol. 40, Pg. 1407, 1998.
man TDLo oral 1143ug/kg (1.143mg/kg) CARDIAC: CARDIOMYOPATHY INCLUDING INFARCTION

LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES

MUSCULOSKELETAL: OTHER CHANGES
British Journal of Industrial Medicine. Vol. 39, Pg. 308, 1982.
 
monkey LDLo intravenous 12mg/kg (12mg/kg) SENSE ORGANS AND SPECIAL SENSES: MYDRIASIS (PUPILLARY DILATION): EYE

VASCULAR: BP LOWERING NOT CHARACTERIZED IN AUTONOMIC SECTION

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
Brain; Journal of Neurology. Vol. 95, Pg. 505, 1972.
 
mouse LC50 inhalation 32400ug/m3 (32.4mg/m3) SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE

LUNGS, THORAX, OR RESPIRATION: STRUCTURAL OR FUNCTIONAL CHANGE IN TRACHEA OR BRONCHI

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
"Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 173, 1999.
mouse LD50 intraperitoneal 28mg/kg (28mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

LUNGS, THORAX, OR RESPIRATION: RESPIRATORY STIMULATION

BEHAVIORAL: CHANGES IN MOTOR ACTIVITY (SPECIFIC ASSAY)
Journal of Industrial Hygiene and Toxicology. Vol. 30, Pg. 98, 1948.
mouse LD50 intravenous 19mg/kg (19mg/kg)   Compilation of LD50 Values of New Drugs.
mouse LD50 oral 27mg/kg (27mg/kg)   Compilation of LD50 Values of New Drugs.
mouse LD50 subcutaneous 23060ug/kg (23.06mg/kg) PERIPHERAL NERVE AND SENSATION: SPASTIC PARALYSIS WITH OR WITHOUT SENSORY CHANGE

LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES
Medycyna Pracy. Industrial Medicine. Vol. 12, Pg. 427, 1961.
mouse LD50 unreported 27mg/kg (27mg/kg)   British Journal of Cancer. Vol. 6, Pg. 160, 1952.
 
rabbit LD50 skin 20mg/kg (20mg/kg)   Farm Chemicals Handbook. Vol. -, Pg. C32, 1991.
rabbit LDLo subcutaneous 17mg/kg (17mg/kg)   Archiv fuer Toxikologie. Vol. 22, Pg. 160, 1966.
rat LC50 inhalation 37mg/m3 (37mg/m3) SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

LUNGS, THORAX, OR RESPIRATION: STRUCTURAL OR FUNCTIONAL CHANGE IN TRACHEA OR BRONCHI
"Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 173, 1999.
rat LD50 intratracheal 47500ug/kg (47.5mg/kg) PERIPHERAL NERVE AND SENSATION: SPASTIC PARALYSIS WITH OR WITHOUT SENSORY CHANGE

LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES
Medycyna Pracy. Industrial Medicine. Vol. 12, Pg. 427, 1961.
rat LD50 oral 27mg/kg (27mg/kg)   Farm Chemicals Handbook. Vol. -, Pg. C32, 1991.
rat LD50 skin 50mg/kg (50mg/kg)   "Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 173, 1999.
rat LD50 subcutaneous 45100ug/kg (45.1mg/kg) PERIPHERAL NERVE AND SENSATION: SPASTIC PARALYSIS WITH OR WITHOUT SENSORY CHANGE

LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES
Medycyna Pracy. Industrial Medicine. Vol. 12, Pg. 427, 1961.
rat LDLo intraperitoneal 30mg/kg (30mg/kg)   Public Health Reports. Vol. 58, Pg. 607, 1943.
women LDLo oral 14mg/kg (14mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

CARDIAC: ARRHYTHMIAS (INCLUDING CHANGES IN CONDUCTION)

CARDIAC: CHANGE IN FORCE OF CONTRACTION
Journal of Forensic Sciences. Vol. 35, Pg. 193, 1990.
 
women LDLo oral 786mg/kg (786mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

BEHAVIORAL: COMA

CARDIAC: ARRHYTHMIAS (INCLUDING CHANGES IN CONDUCTION)
Medical Toxicology and Adverse Drug Experience. Vol. 4, Pg. 219, 1989.
women TDLo oral 3mg/kg (3mg/kg) BEHAVIORAL: HEADACHE

LUNGS, THORAX, OR RESPIRATION: DYSPNEA

GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA"
Archiv fuer Toxikologie. Vol. 20, Pg. 279, 1965.

Consensus Reports

Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program. EPA Extremely Hazardous Substances List.

Safety Profile

Poison by ingestion, skin contact, intraperitoneal, intravenous, and subcutaneous routes. Human systemic effects by ingestion: general anesthesia, somnolence, and kidney changes. Questionable carcinogen with experimental tumorigenic data. Human mutation data reported.
Violent reaction with benzoyl chloride combined with KOH, Br2, barium carbonate, CS2, Cr(OCl)2, Cu, Pb, HNO3, BaCO3, H2SO4, hot water, (CH3)2SO4, dibromomalononitrile, sulfuric acid. Incompatible with acids, ammonium chloride + trichloroacetonitrile, phosgene, cyanuric chloride, 2,5-dinitro-3-methylbenzoic acid + oleum, trifluroroacryloyl chloride. Reacts with heavy metals (e.g., brass, copper, lead) to form dangerously explosive heavy metal azides, a particular problem in laboratory equipment and drain traps. When heated to decomposition it emits very toxic fumes of NOx and Na2O. See also AZIDES
Hazard Codes: HarmfulXn, ToxicT, DangerousN, VeryT+
Risk Statements: 28-32-50/53-52/53-22 
R28:Very toxic if swallowed. 
R32:Contact with acid liberates very toxic gas. 
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 
R52/53:Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 
R22:Harmful if swallowed.
Safety Statements: 61-60-45-28A-28
 S61:Avoid release to the environment. Refer to special instructions / safety data sheets. 
S60:This material and its container must be disposed of as hazardous waste. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S28:After contact with skin, wash immediately with plenty of soap-suds.
RIDADR: UN 1687 6.1/PG 2
WGK Germany: 2
RTECS: VY8050000
HazardClass: 6.1
PackingGroup: II

Specification

 Sodium azide , its cas register number is 26628-22-8. It also can be called Azide, sodium ; Azoture de sodium ; Azydek sodu ; Hydrazoic acid, sodium salt ;  Natriumazid ; Nemazyd ; Smite .It is a colorless crystalline solid. It can burns in air and may explode if large quantities are involved. It is toxic by ingestion. It soluble in water. Its dust may form an explosive mixture in air. It is unstable and may explode if shocked. It can cause death by affecting the central nervous system. Contact may cause burns to skin and eyes. It is extremely toxic.