Gunpowder

Gunpowder, formerly known as sulphur, is an item from vannila Minecraft that can be obtained by killing Creepers, Ghasts or looting dungeon chests.

Uses
Gunpowder is used to craft TNT, Nukes and fire charges, and can be brewed with any potion to make a splash potion. Fire charges were added in snapshot 12w04a, and have the same properties as flint and steel, except if launched from a dispenser. Also, in the laest version of Tekkit, thay can be used to craft Dynamite with string