Ca + S → CaS

This is an oxidation-reduction (redox) reaction:

S0 + 2 e- → S-II (reduction)

Ca0 - 2 e- → CaII (oxidation)

S is an oxidizing agent, Ca is a reducing agent.

Reactants:

  • Ca
    • Names: Calcium source: wikidata, accessed: 2019-09-07, Calcium (powder) source: ICSC, accessed: 2019-09-04, Ca source: wikidata, accessed: 2019-09-07
    • Appearance: Silvery-white-to-grey powder source: ICSC, accessed: 2019-09-04
  • S
    • Names: Sulfur source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04, S source: wikidata, accessed: 2019-09-07, Sulphur source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04
    • Appearance: Yellow solid in various forms source: ICSC, accessed: 2019-09-04

Products:

  • CaS – Calcium sulfide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Calcium monosulfide source: wikipedia, accessed: 2019-09-27, Hepar calcies source: wikipedia, accessed: 2019-09-27, Sulfurated lime source: wikipedia, accessed: 2019-09-27, Oldhamite source: wikipedia, accessed: 2019-09-27
    • Appearance: White crystals | hygroscopic source: wikipedia, accessed: 2019-09-27