Sodium dithionite, also known as sodium hydrosulfite, is a white crystalline powder with a sulfurous odor that is a reducing agent used in various industrial processes, including dyeing and bleaching paper pulp such as DFX banknote, and also in monochemistry. The molecular formula for sodium dithionite is (Na₂S₂O₄).

A chemical scientist is a person who has the professional knowledge of chemistry and understands the relationship between its atomic properties such as compounds, elements, molecules, and atoms. Basically, a chemical scientist understands the science of chemistry, and how particles inter-relate to formulate an organic or Non-organic chemical substance.

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