Cotoin is primarily used in the textile industry as a flame-retardant additive for natural and synthetic fibers. It helps improve the fire resistance of fabrics without significantly altering their texture or color, making it suitable for protective clothing, upholstery, and industrial textiles. Due to its stability under high temperatures, Cotoin is also incorporated into coatings and polymers used in electronics and construction materials to enhance safety standards. Additionally, it finds application in the production of flame-resistant paper and packaging materials for sensitive goods. Its low volatility and durability in matrix systems make it a preferred choice for long-term fire protection solutions.