Cellulose

The seeds of the cotton plant are used to produce vegetable oil, cotton is made from its flower, and cellulose, one of the raw materials of celluloid, is made from the downy part of the cotton plant (linter). Cellulose reacts with nitric acid to form nitrocellulose (gun cotton), and becomes celluloid with the addition of camphor, which acts as a plasticizing agent. Initially earthenware pots were used because they are resistant to acid. One of these pots is on display at Celluloid House Yokohama.