In a smoky 19th century Colorado saloon, two billiard balls collide and explode with a pop like a gunshot, and every man in the room draws his weapon. That documented problem is our entry point into nitrocellulose, the volatile compound that revolutionized global warfare, gave birth to the plastics and motion picture industries, and still hides in plain sight in your bathroom cabinet.

This deep dive explains what happens when cellulose meets nitric and sulfuric acid, then follows the accidental 1846 discovery in Christian Friedrich Schoenbein’s kitchen, the deadly Faversham factory explosion, Frederick Abel’s 48-hour washing fix, and the rise of smokeless powder. We cover John Wesley Hyatt’s camphor-plasticized celluloid and the ivory crisis, mother-in-law silk, Kodak’s flexible film base, the catastrophic nitrate fires of 1914, 1926, 1929 and the Cleveland Clinic disaster, vinegar syndrome, and the modern afterlife of the compound in nail polish, guitar lacquer, ping-pong balls, flash paper and pregnancy tests.

• Why nitrate ester brings its own oxygen and can keep burning underwater
• How Jules Verne’s moon cannon and the Philae comet lander both relied on gun cotton
• Why Hollywood kept using self-destructing film for 60 years for its luminous silver image
• The projector booths, metal magazines and automatic extinguishers still required to screen nitrate prints
• The preservation paradox: the medium that captured our history was built to destroy itself