2 NaOH + Cl2 → NaCl + NaClO + H2O – Balanced equation

Or you want a quick look:

This is an oxidation-reduction (redox) reaction:

Cl - 1 e- ClI (oxidation)

Cl + e- Cl-I (reduction)

Cl2 is both an oxidizing and a reducing agent (disproportionation (dismutation)).

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  • NaOH
    • Names: Sodium hydroxide , Caustic soda , Lye
    • Appearance: White, waxy, opaque crystals ; White hygroscopic solid in various forms ; Colorless to white, odorless solid (flakes, beads, granular form).
  • Cl2
    • Names: Chlorine , Molecular chlorine
    • Appearance: Greenish-yellow compressed liquefied gas with pungent odour ; Greenish-yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]


  • NaClSodium chloride
    • Other names: {{unbulleted list , Salt , Table salt
    • Appearance: Colorless cubic crystals
  • NaClOSodium hypochlorite
    • Other names: A , Ntiformin|Bleach|Chloride of soda}}'In dilution:'C , Arrel-Dakin solution|Modified Dakin's solution|Surgical chlorinated soda solution}}
    • Appearance: Greenish-yellow solid (pentahydrate) ; Clear slightly yellow solution with characteristic odour ; Clear slightly yellow solution with characteristic odour
  • H2OWater, oxidane
    • Other names: Water (H2O) , Hydrogen hydroxide (HH or HOH) , Hydrogen oxide
    • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas
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