Argon is colorless, odorless, nonflammable and nontoxic as a solid, liquid or gas. UHMWPE is odorless, tasteless, and nontoxic. Modern techniques involve renewable, nonflammable and nontoxic chemicals. Precast concrete is nontoxic and environmentally safe. Most inorganic phosphates are relatively nontoxic and essential nutrients. Balsam fir oil is an EPA approved nontoxic rodent repellent. Zinc oxide paints were nontoxic and resistant to pollution. The pigment is a nontoxic alternative to cadmium sulfide pigments. Natural processes can also introduce toxic substances into nontoxic honey produced from nontoxic nectar. Being inexpensive, nontoxic, and fairly inert, stearic acid finds many niche applications. It is mildly toxic, but can be degraded biologically by conversion into nontoxic compounds. Paracetamol is metabolized primarily in the liver, into toxic and nontoxic products. This material is nonallergic, nontoxic, antibacterial and resistant to UV rays. Bioglass and glass ceramics are nontoxic and chemically bond to bone. Sodium thiosulfate then binds with cyanide creating the nontoxic thiocyanate.