sentences: "Starlite's composition is a closely guarded secret, but it is said to contain a variety of organic polymers and co-polymers with both organic and inorganic additives, including borates and small quantities of ceramics and other special barrier ingredients—up to 21 in all.Perhaps uniquely for a material claimed to be thermal and blast-proof, it is claimed to be not entirely inorganic but up to 90 percent organic.