Potassium phosphate

Potassium phosphate is a generic term for the salts of potassium and phosphate ions including:^[1]

• Monopotassium phosphate (KH₂PO₄) (Molar mass approx: 136 g/mol)
• Dipotassium phosphate (K₂HPO₄) (Molar mass approx: 174 g/mol)
• Tripotassium phosphate (K₃PO₄) (Molar mass approx: 212.27 g/mol)

Monopotassium phosphate

Dipotassium phosphate

Tripotassium phosphate

As food additives, potassium phosphates have the E number E340.

References

1. Klaus Schrödter; Gerhard Bettermann; Thomas Staffel; Friedrich Wahl; Thomas Klein; Thomas Hofmann (2012). "Phosphoric Acid and Phosphates". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a19_465.pub3. ISBN 978-3-527-30673-2.