the invention relates to a biodegradable halogen - free flame retardants composition used for fire - safety and prevention , that limits and extinguishes fires by means of increased resistance to ignition , slowing down burning rates and the rate of heat , smoke and toxic gas release from polymers with different physical and chemical properties and structure , such as textiles , wooden materials , paper , cardboard , corrugated board , leather , cellular polystyrene , foamed polyurethane , and items made of them . the composition according to the invention contains orthophosphoric acid , urea , triethanolamine , ammonia water , polydimethylsiloxane , surfactant , which may be anionic , cationic , amphoteric , non - ionic or mixtures thereof and water .