Cellulose trinitrate synthesis using concentrated sulfuric acid (H2SO4) and concentrated nitric acid (HNO3). Do not attempt to make this. Chemistry = dangerous, acid = dangerous, danger = dangerous.
Nitrocellulose is a highly inflammable material made by treating cellulose with concentrated nitric acid. Nitrocellulose is generally used to make explosives and celluloid, and is also called cellulose nitrate.
Just watch this exploding, flaming, scientific video tutorial to learn how to make nitrocellulose.