Here’s what AI says about it.
Pyroxylin (also known as soluble guncotton or nitrocellulose) is a highly flammable mixture of cellulose nitrates used to form protective films. A key ingredient in collodion, it is utilized as a binder in lacquers, artificial leathers, quick-drying varnishes, and certain medical and photographic applications.Key CharacteristicsComposition: Produced by treating plant fibers (like cotton linters or wood pulp) with a mixture of nitric and sulfuric acids.Physical Properties: Resembles raw cotton but is harsh to the touch. When dry, it is highly flammable and burns rapidly; consequently, it is usually stored dampened with alcohol or other solvents.Solubility: Unlike highly nitrated guncotton, pyroxylin is distinct for being soluble in organic solvent mixtures like ether and alcohol.Common ApplicationsCollodion: A solution of pyroxylin in ether and alcohol. When the solvents evaporate, it leaves behind a flexible, waterproof film used historically in liquid bandages, photographic plates, and engraving.Lacquers & Coatings: Dissolved in volatile solvents with added plasticizers, it creates durable, quick-drying protective coatings (e.g., traditional automotive finishes).Early Plastics: When colloided with camphor, pyroxylin was the base for early plastics like celluloid.Art & Specialty Materials: Occasionally used in older varnishes or as a binder for certain paints and sculptures.