Evaluated Alternative SOL FR® - flame retardants made from natural cellulose The new generation of environmentally friendly silicone-nitrogen FR cellulose fiber SOL FR® is made from raw materials including natural cellulose and flame retardants. SOL FR® is produced through spinning and solidifying after a grafting reaction between cellulose solution and new silicon-nitrogen flame retardants, which can remain its original frameshape after burning without releasing toxic smoke and exerting bad effect on natural environment after its waste degradation, overcoming the current problems of poisonous gas released by burning phosphorus-containing flame-resistant fabric and water eutrophication in the process of waste degradation. The filament and stable fiber produced by this technique can be used to make into military protective clothing, firefighter uniform, knitting and weaving textile products for household and public interior furnishings.