Potassium azide is a chemical compound with the formula KN3. It appears as a white crystalline solid and is primarily used in laboratories and industrial applications. Potassium azide is known for its ability to release nitrogen gas when it decomposes, making it useful in various chemical reactions. In addition to its laboratory uses, potassium azide is also employed in the automotive industry as a propellant in airbag systems. When triggered, it rapidly decomposes to produce gas, inflating the airbag almost instantly. However, it is important to handle potassium azide with care, as it is toxic and can be explosive under certain conditions.