Gun cotton, also known as nitrocellulose, is a highly flammable compound created by treating cellulose with a mixture of nitric and sulfuric acids. It was first developed in the mid-19th century and is notable for its use as a propellant in firearms and artillery. Gun cotton burns rapidly, producing a large volume of gas, which makes it effective for use in ammunition. Due to its explosive properties, gun cotton has been used in various military applications and is a key component in some types of explosives. It is also utilized in the production of certain types of films and lacquers. Its invention marked a significant advancement in the field of explosives, influencing the development of modern munitions and pyrotechnics.