Chromium (III) Chloride Hexahydrate CrCl3.6H2O

Iron (III) Nitrate Fe(NO3)3.9H2O

Potassium Hexacyanoferrate (III) K3Fe(CN)6

Potassium persulfate (Potassium peroxydisulfate) - K2S2O8

Magnesium powder - MgO

Calcium Hydroxide Ca(OH)2

Sodium Hydrogen Sulfite NaHSO3