CuSO4 + 2 KI → CuI2 + K2SO4
Reactants:
- CuSO4 – Copper(II) sulfate


- Other names: Cupric sulphate

, Blue vitriol (pentahydrate)
, Bluestone (pentahydrate)
Bonattite (trihydrate mineral)
, Boothite (heptahydrate mineral)
, Chalcanthite (pentahydrate mineral)
, Chalcocyanite (mineral)
, Cupric sulfate
, Copper sulfate (anhydrous)
, CuSO4
, Copper sulfate
, Cupric sulfate anhydrous
, Copper monosulphate
, Copper sulfate (1:1)
, Cupric sulphate anhydrous
, Copper sulphate
, Copper(2+) sulfate
, Copper(II) sulphate
, Copper monosulfate
, Cupric sulfate, anhydrous
, Cupric sulphate, anhydrous
, Sulfuric acid, copper(2+) salt(1:1) 
- Appearance: Gray-white (anhydrous) | blue (pentahydrate)
; White hygroscopic crystals 
- KI
- Names: Potassium iodide
, KI
, Thyrosafe
Thyroshield
, Iosat
, Kaliumiodid
, Nukepills
, Potassium Iodide 
Products:
- CuI2
- K2SO4
- Names: Potassium sulfate


, Potassium sulphate 
, Dipotassium sulfate 
Kaliumsulfat
, K2SO4
, Sulfuric acid dipotassium salt 
- Appearance: White solid
; Colourless-to-white crystals 