Sodium phosphate, dibasic, heptahydrate

For research use only. Not for therapeutic Use.

  • CAT Number: L011448
  • CAS Number: 7782-85-6
  • Molecular Formula: H15Na2O11P
  • Molecular Weight: 268.07
  • Purity: ≥95%
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Sodium phosphate, dibasic, heptahydrate (Cat No.:L011448) is an inorganic compound composed of sodium cations, hydrogen phosphate anions, and seven molecules of water of crystallization. It appears as a colorless to white crystalline solid and is highly soluble in water. Commonly used as a buffering agent, it helps maintain pH in biological and chemical systems. It also finds applications in food processing, water treatment, and laboratory reagents. The heptahydrate form ensures stability and ease of handling, making it suitable for preparing phosphate buffer solutions in biochemical and pharmaceutical formulations.


CAS Number 7782-85-6
Molecular Formula H15Na2O11P
Purity ≥95%
IUPAC Name disodium;hydrogen phosphate;heptahydrate
InChI InChI=1S/2Na.H3O4P.7H2O/c;;1-5(2,3)4;;;;;;;/h;;(H3,1,2,3,4);7*1H2/q2*+1;;;;;;;;/p-2
InChIKey PYLIXCKOHOHGKQ-UHFFFAOYSA-L
SMILES O.O.O.O.O.O.O.OP(=O)([O-])[O-].[Na+].[Na+]
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