Sodium Azide

Sodium azide is a highly toxic and reactive inorganic compound with the chemical formula NaN3. It is a white crystalline solid that is soluble in water and ethanol but insoluble in organic solvents such as ether and chloroform.

Sodium azide is primarily used as a preservative for biological samples, such as blood, because it inhibits bacterial growth by interfering with cellular respiration. It is also used in airbags in automobiles, where it reacts with other chemicals to produce nitrogen gas to inflate the airbag quickly in the event of a collision.

However, sodium azide is highly toxic and can be dangerous if mishandled or ingested. It releases toxic fumes of nitrogen oxide when heated or exposed to acid, and it can react violently with metals such as copper and lead to produce explosive compounds. It can also react with other chemicals to produce highly toxic gases such as hydrazoic acid, which is lethal even at low concentrations.

Symptoms of exposure to sodium azide include difficulty breathing, headache, nausea, vomiting, dizziness, and convulsions. It is important to handle sodium azide with care, wear appropriate personal protective equipment, and store it in a cool, dry, and well-ventilated area away from heat sources, acids, and incompatible materials. Disposal of sodium azide should be done according to local regulations and guidelines to prevent environmental contamination and risk to human health.