Pigment: Zinc oxide, Titanium dioxide, Iron oxide, Chromium oxide green, Carbon black, and so on.
Acid: Formic acid,Oxalic acid, EDTA, Acetic Acid and so on.
Alkali: Caustic Soda, Soda Ash, Caustic Potash and son on,
Sulphate and Carbonates: Sodium salts, Calcium salts