Sodium Azide

Sodium azide is a highly toxic, colorless, odorless crystalline inorganic salt with the chemical formula NaN₃. It is widely used as a rapid gas-generating agent in automotive airbags, as a biocidal preservative in laboratory reagents, and as an important reagent in chemical synthesis. It is highly soluble in water and acts as a potent inhibitor of mitochondrial respiration.

Key Details:

Chemical Formula: NaN₃

Description: Appearance: Colorless, odorless crystalline solid.
Properties: Highly soluble in water (approximately 50–100 mg/mL at 72°F), dense (1.85 g/cm³), and acutely toxic.
Stability: Generally stable, but may explode if heated to decomposition (~527°F / 275°C) or if it forms shock-sensitive heavy metal azides.

Common Uses:

• Automotive Airbags: Used as a propellant to rapidly generate nitrogen gas during airbag deployment.
• Laboratory Preservative: Acts as a biocidal agent to inhibit microbial growth in biological samples and reagents.
• Chemical Synthesis: Used as a reagent for producing organic and inorganic azide compounds.
• Agriculture: Used in limited applications as a pesticide and herbicide.

Safety Note: Sodium azide is extremely poisonous and acts in a manner similar to cyanide by inhibiting cellular respiration. Strict handling, storage, and disposal controls are required.

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