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Food-grade phosphoric acid (additive E338 [32]) is used to acidify foods and beverages such as various colas and jams, providing a tangy or sour taste. The phosphoric acid also serves as a preservative. [33] Soft drinks containing phosphoric acid, which would include Coca-Cola, are sometimes called phosphate sodas or phosphates.
Phosphates occur widely in nature mostly as phosphate rock or fluorapatite. Large deposits exist in Russia, USA, North Africa, China, where they are obtained mostly by open cast mining. Over 85% is used in fertiliser production and only less than 7% in feed phosphate production. Two types of deposits exist; of volcanic and of sedimentary origin.
ICL Group Ltd. (Hebrew: איי.סי. אל. גרופ בע"מ) (formerly Israel Chemicals Ltd., ICL) [8] is a multi-national manufacturing concern that develops, produces and markets fertilizers, metals and other special-purpose chemical products. ICL serves primarily three markets: agriculture, food and engineered materials. [9]
Phosphoric acids and phosphates. Appearance. Pyrophosphoric acid. In chemistry, a phosphoric acid, in the general sense, is a phosphorus oxoacid in which each phosphorus (P) atom is in the oxidation state +5, and is bonded to four oxygen (O) atoms, one of them through a double bond, arranged as the corners of a tetrahedron.
Sodium hexametaphosphate (SHMP) is a salt of composition Na6[ (PO3)6]. [3] Sodium hexametaphosphate of commerce is typically a mixture of metaphosphates (empirical formula: NaPO 3), of which the hexamer is one, and is usually the compound referred to by this name. Such a mixture is more correctly termed sodium polymetaphosphate.
Ammonium polyphosphate is an inorganic salt of polyphosphoric acid and ammonia containing both chains and possibly branching. Its chemical formula is H(NH 4 PO 3) n OH showing that each monomer consists of an orthophosphate radical of a phosphorus atom with three oxygens and one negative charge neutralized by an ammonium cation leaving two bonds free to polymerize.