What is Sodium dihydrogen phosphate?
Sodium dihydrogen phosphate is an inorganic monobasic sodium phosphate compound with the chemical formula NaH2PO4. Sodium dihydrogen phosphate is a derivative composed of glycerol derivatives formed by reacting mono and diglycerides that are derived from edible sources with phosphorus pentoxide followed by neutralization with sodium carbonate. Sodium dihydrogen phosphate is a soluble form of phosphate that can be administered intravenously.
Other names – Monobasic sodium phosphate, Monosodium phosphate (MSP)
|NaH2PO4||Sodium dihydrogen phosphate|
|Density||2.36 g/cm3 (anhydrous)|
|Molecular Weight/ Molar Mass||119.98 g/mol|
Sodium dihydrogen phosphate Structure – NaH2PO4
Physical Properties of Sodium dihydrogen phosphate – NaH2PO4
|Appearance||White powder or crystals|
|pH||8.0 and 11.0|
|Solubility in water||Soluble in water; insoluble in alcohol|
Chemical Properties of Sodium dihydrogen phosphate – NaH2PO4
- Sodium dihydrogen phosphate reacts with base like sodium hydroxide resulting in the formation of sodium hydrogen phosphate and water.
NaH2PO4 + NaOH → Na2HPO4 + H2O
- Sodium dihydrogen phosphate reacts with acid like hydrochloric acid results in the formation of phosphoric acid and sodium chloride.
NaH2PO4 + HCl → H3PO4 + NaCl
Uses of Sodium dihydrogen phosphate – NaH2PO4
- Used for water treatment were generally safe, high concentrations had the potential for interfering with human essential trace metal metabolism.
- Phosphorus in domestic sewage may be derived from human wastes, waste food (primarily from household garbage- disposal units), and synthetic detergents.
- Reducing the amount of phosphorus reaching the sewage treatment works by concerted public campaigns can reduce the costs of stripping gas or vapor from a foam.