I2 is both an oxidizing and a reducing agent (disproportionation (dismutation)).
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Reactants:
I2
Names: Iodine, Jod, Iode
Appearance: Bluish black or dark purple crystals with pungent odour ; Violet solid with a sharp, characteristic odor.
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).