What is Sodium azide at room temperature?

Sodium azide (NaN₃) is a white, crystalline solid at room temperature, typically appearing as a powder or small crystals. It is highly soluble in water and is known for its use as a preservative and in various industrial applications, including as a propellant in airbags. Sodium azide is toxic and can be hazardous, requiring careful handling due to its ability to release highly toxic hydrogen azide gas upon decomposition.