3 NaN3 → Na3N + 4 N2

This is an oxidation-reduction (redox) reaction:

8 N-1/3 - 8/3 e- → 8 N0 (oxidation)

N-1/3 + 8/3 e- → N-III (reduction)

NaN3 is both an oxidizing and a reducing agent (disproportionation (dismutation)).

Reactants:

  • NaN3
    • Names: Sodium azide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Sodium trinitride source: wikipedia, accessed: 2019-09-27, Smite source: wikipedia, accessed: 2019-09-27
    • Appearance: Colorless to white solid source: wikipedia, accessed: 2019-09-27; Colourless hexagonal crystals source: ICSC, accessed: 2019-09-04; Colorless to white, odorless, crystalline solid. [pesticide] [Note: Forms hydrazoic acid (HN3) in water.] source: NIOSH NPG, accessed: 2019-09-02

Products:

  • Na3N
    • Names: Sodium nitride source: wikidata, accessed: 2019-09-02
  • N2
    • Names: Dinitrogen source: wikidata, accessed: 2019-09-07, Nitrogen (compressed gas) source: ICSC, accessed: 2019-09-04, Nitrogen (liquified) source: ICSC, accessed: 2019-09-04
    • Appearance: Odourless colourless compressed gas source: ICSC, accessed: 2019-09-04; Odourless colourless extremely cold liquid source: ICSC, accessed: 2019-09-04