Sodium Phosphate Dibasic Heptahydrate, USP Grade *


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Sodium Phosphate Dibasic Heptahydrate, also known as Disodium Hydrogen Phosphate Heptahydrate, Dibasic Sodium Phosphate Heptahydrate, Disodium Acid Orthophosphate Heptahydrate, and Disodium Acid Phosphate Heptahydrate, has the chemical formula Na2HPO4-7H2O or H15Na2O11P. It appears as a white powder, crystals, or granules with no odor. It is soluble in Water and Alcohol at ambient conditions. Purified Grade, also known as Pure or Practical Grade, refers to those high-purity compounds that do not fulfill the ACS, the USP, or the FCC grade requirements. They are mostly used in conjunction with Lab Grade chemicals. In the United States of America (USA), Lab Alley is selling its high-quality Sodium Phosphate Dibasic Heptahydrate, USP Grade online at

Sodium Phosphate Dibasic Features:

Assay 98.0-100.5%
Loss on Drying 43.0-50.0%
Insoluble Matter 0.4%
Chloride (Cl) 0.06%
Sulfate (SO4) 0.2%
Arsenic (As) 16 ppm
Heavy Metals (as Pb) 0.002%
Common Uses
  • Reagent
  • Anti-caking additive
  • Thickening agent in desserts
Commercial/Industrial Applications
  • Synthesis of detergents
  • Wastewater treatment
  • Food processing
  • Pharmaceuticals
Safety and Handling

Please contact us to request a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for Sodium Phosphate Dibasic-7H2O USP.

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