Sodium azide is a chemical compound with the formula NaN₃. It appears as a white, crystalline solid and is primarily used as a preservative in laboratories and as a propellant in automotive airbags. Sodium azide is highly toxic and can be dangerous if ingested or inhaled, as it can release toxic gases upon decomposition. In addition to its uses in laboratories and automotive safety, sodium azide is also employed in the synthesis of other chemicals. It is important to handle sodium azide with care, following safety protocols to prevent accidental exposure or environmental contamination.