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Information on Sodium Acid Pyro Phosphate
Sodium Acid Pyro Phosphate is a derivative of Phosphoric Acid. Sodium Acid Pyro Phosphate is moderately soluble in water. Sodium Acid Pyro Phosphate is a white crystalline powder with a melting point in excess of 600oC. It should be stored in tightly closed containers in a Room Temperature.
Synthesis / Manufacturing Process of Sodium Acid Pyro Phosphate
The major raw material to all the phosphates is Phosphoric Acid. Phosphoric Acid is manufactured from Rock Phosphate. Phosphate rock is fed to a series of reactors along with recycled phosphoric acid from the process. The phosphoric acid-fluoroapatite slurry is mixed with sulphuric acid which is added to the reactor series as a leaching agent. After completing the reaction series, the process stream is washed with evaporator condensate while being forced through a filter. The filter cake is composed primarily of gypsum (CaSO4 2H2O). The Phosphoric Acid is concentrated to 75-100% by a series of evaporators and then cooled.
Sodium Acid Pyro Phosphate is manufactured by taking a reaction between Sodium Carbonate & Phosphoric Acid, followed by heating of the resulting Sodium Phosphate at 220oC.
Specifications of Sodium Acid Pyro Phosphate
Product Name : Sodium Acid Pyro Phosphate.
Product Code : F010.
Product Category : Phosphates.
CAS No. : 7758-16-9.
HSN No. : 28353100.
Synonyms : Sodium Acid Pyro Phosphate; SAPP.
Molecular Formula : H2Na2O7P2.
Molecular Weight : 221.94.
Appearance : White Crystalline Powder.
Solubility : Soluble In Water.
Assay : 90.0% Min.
P2O5 Content : 59.0% Min.
pH : 4.0 – 6.0.
Packing : 25 Kg. HDPE Bags / Drums.
Uses / Application of Sodium Acid Pyro Phosphate
Sodium Acid Pyro Phosphate is used as chelating agent or buffering agent in many Food & Industrial applications. It is used to remove Iron stains during processing of leather. It is used as a dispersant in oil well drilling application.