Question

Sodium dithionite v/s sodium metabisulphite

Answer 1

 sodium metabisulphite (concoction recipe Na2S2O5), additionally called disodium, is a white-yellowish crystalline powder utilized as a cancer prevention agent, disinfectant, and additive operator. It effortlessly breaks down in water.
Sodium dithionite (also known as sodium hydrosulfite) is a white crystalline powder with a weak sulfurous odor. Although it is stable in the absence of air, it decomposes in hot water and in acid solutions.