What Are The Physical And Chemical Properties Of Sodium Dithionite Sigma?

Sodium dithionite (Na2S2O4), also known as sodium hydrosulfite, is a white crystalline powder with a faint sulfurous odor. It is highly water-soluble and readily dissolves in water to form a colorless solution.

Physically, sodium dithionite is a reducing agent that can decompose at temperatures above 90°C, releasing sulfur dioxide gas and leaving behind sodium sulfate residue. It is a stable compound under normal conditions of storage and handling.

Chemically, sodium dithionite is an effective bleaching agent and is widely used in the textile industry for dyeing and printing applications. It is also used as a reducing agent in various chemical reactions, such as the reduction of carbonyl compounds to alcohols and the reduction of nitro compounds to amines.

Sodium dithionite is sensitive to air and moisture, and it should be stored in a dry and well-ventilated area, away from incompatible substances like strong oxidizers or acids. Ingestion or inhalation of sodium dithionite dust may cause irritation to the respiratory system, skin, and eyes.