9 P4 + 16 NaOH + 48 H2O 20 PH4 + 16 NaH2PO4

This is an oxidation-reduction (redox) reaction:

20 P0 + 80 e- 20 P-IV (reduction)

16 P0 - 80 e- 16 PV (oxidation)

P4 is both an oxidizing and a reducing agent (disproportionation (dismutation)).

Reactants:

  • P4
  • NaOH
    • Names: Sodium hydroxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Caustic soda source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Lye source: wikidata, accessed: 2019-09-02
    • Appearance: White, waxy, opaque crystals source: wikipedia, accessed: 2019-09-27; White hygroscopic solid in various forms source: ICSC, accessed: 2019-09-04; Colorless to white, odorless solid (flakes, beads, granular form). source: NIOSH NPG, accessed: 2019-09-02
  • H2OWater, oxidane source: wikipedia, accessed: 2019-09-27
    • Other names: Water (H2O) source: wikipedia, accessed: 2019-09-27, Hydrogen hydroxide (HH or HOH) source: wikipedia, accessed: 2019-09-27, Hydrogen oxide source: wikipedia, accessed: 2019-09-27
    • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas source: wikipedia, accessed: 2019-09-27

Products:

  • PH4
  • NaH2PO4Sodium dihydrogen phosphate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Monosodium phosphate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Monobasic sodium phosphate; source: wikipedia, accessed: 2019-09-27, Sodium dihydrogen phosphate; source: wikipedia, accessed: 2019-09-27
    • Appearance: White powder or crystals source: wikipedia, accessed: 2019-09-27