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Triple superphosphate is a component of many proprietary fertilisers. It primarily consists of monocalcium phosphate, Ca(H 2 PO 4) 2. It is obtained by treating phosphate rock with phosphoric acid. Many proprietary fertilisers are derived from triple superphosphate, for example by blending with ammonium sulfate and potassium chloride.
In the beginning it only produced Triple Super Phosphate (TSP) fertilizer and from 1990 is started producing Single superphosphate fertilizer also. The fertilizer complex is located Karnaphuli river bank at Patenga, Chittagong. [3]
This solid is called triple superphosphate. Several million tons are produced annually for use as fertilizers. Using sulfuric acid, fluorapatite is converted to a mixture of Ca(H 2 PO 4) 2 and CaSO 4. This solid is called single superphosphate.
Triple superphosphate (TSP) typically consists of 44–48% of P 2 O 5 and no gypsum. A mixture of single superphosphate and triple superphosphate is called double superphosphate. More than 90% of a typical superphosphate fertilizer is water-soluble. The main potassium-based straight fertilizer is muriate of potash (MOP, 95–99% KCl). It is ...
Phosphoric acid is reacted with phosphate rock to produce the fertilizer triple superphosphate or with anhydrous ammonia to produce the ammonium phosphate fertilizers. Elemental phosphorus is the base for furnace-grade phosphoric acid, phosphorus pentasulfide, phosphorus pentoxide, and phosphorus trichloride. [citation needed]
Fertilizers are usually labeled with three numbers, as in 18-20-10, indicating the relative content of the primary macronutrients nitrogen (N), phosphorus (P), and potassium (K), respectively. More precisely, the first number ("N value") is the percentage of elemental nitrogen by weight in the fertilizer; that is, the mass fraction of nitrogen ...