7758-16-9

  • CAS No.: 7758-16-9
  • Purity: 99%
  • Type: Disodium dihydrogen pyrophosphate
  • Other Names: SAPP
  • MF: Na2H2P2O7,NaH3P2O7
  • Grade Standard: Food Grade
  • Appearance: white powder
  • Application: food additive

Daily Uses:

  • Used in baking powders to produce CO₂ gas for leavening.
  • Added to fast-food products (e.g., chicken nuggets) to improve batter adhesion.
  • Used in tooth whitening gels to adjust pH.

Application Fields:

  • Baked goodsprocessed foodspersonal carepharmaceutics.

Synthesis Method:

  • Acid-base reaction: React phosphoric acid (H₃PO₄) with sodium hydroxide (NaOH) under controlled pH and temperature.
  • Chemical equation: \(2H_3PO_4 + 2NaOH \rightarrow Na_2H_2P_2O_7 + 4H_2O\)

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