10 NaN3 + 6 SiO2 + 2 KNO3 K2SiO3 + 5 Na2SiO3 + 16 N2

This is an oxidation-reduction (redox) reaction:

30 N-1/3 - 10 e- 30 N0 (oxidation)

2 NV + 10 e- 2 N0 (reduction)

NaN3 is a reducing agent, KNO3 is an oxidizing agent (synproportionation (comproportionation)).

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
  • SiO2
    • KNO3Potassium nitrate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04
      • Other names: Saltpeter source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Saltpetre source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Nitrate of potash source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
      • Appearance: White solid source: wikipedia, accessed: 2019-09-27; Colourless-to-white crystalline powder source: ICSC, accessed: 2019-09-04

    Products:

    • K2SiO3
    • Na2SiO3
      • Names: Sodium metasilicate source: wikidata, accessed: 2019-09-02, Sodium metasilicate (anhydrous) source: ICSC, accessed: 2019-09-04, Sodium sesquisilicate source: wikidata, accessed: 2019-09-02
      • Appearance: Colourless-to-white hygroscopic solid in various forms source: ICSC, accessed: 2019-09-04
    • 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