Appearance : Colorless Liquid
Chemical Name : Phosphoric Acid
Chemical Formulaü : H3PO4
Packaging Type : Can be transported in 35 kg Drums, IBC tanks and in bulk with Iso tanks or Stainless Tank Trucks.
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Phosphoric acid is produced industrially by a wet method in which sulfuric acid reacts with apatite (tricalcium phosphate rock).
Ca 5 (PO 4 ) 3 CI + 5H 2 SO 4 + 10H 2 O → 3H 3 PO 4 + 5 CaSO 4 · 2H 2 O + HCI
The resulting Phosphoric acid solution is approximately 32-46% H3PO4, so it is then concentrated (by water evaporation) to produce a higher concentration of phosphoric acid at commercial grades.
Pure Phosphoric acid is a white crystalline solid with a melting point of 42.35 °C. When less concentrated, it is a colorless, odorless, viscous liquid with a density of 1.885 g/mL. It is non-toxic and non-volatile. The most common Phosphoric acid concentration is 85% in water.
Phosphoric acid has three acidic and replaceable H atoms. Thus, it reacts differently than other mineral acids. It can react with bases to form three classes of salts by replacing one, two, or three H atoms, such as NaH2PO4, Na2HPO4, and Na3PO4, respectively.
At high temperatures, Phosphoric acid molecules can react and combine together (with the loss of the water molecule) to form dimers, trimers, and even long polymeric chains such as polyPhosphoric acids and metaPhosphoric acids.
2H 3 PO 4 → lH 4 P 2 O 7 (- H 2 O)
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