Highly flammable substance made from cellulose nitrate and camphor,used in e.g. motion-picture and X-ray film,its use has decreased with the development of nonflammable thermoplastics.

• 极易燃烧的物质，用硝酸纤维素和樟脑制成，用于电影胶片和X光胶片中，由于不可燃烧的热塑性塑料的发展，已减少使用。