Sodium Hydrosulfite

Sodium dithionite, also known as sodium hydrosulfite, is an inorganic substance with the chemical formula Na2S2O4. It is a white sandy crystal or light yellow powder chemical. It has a melting point of 300°C (decomposition) and an ignition temperature of 250°C. It is insoluble in ethanol. , Soluble in sodium hydroxide solution, reacts strongly with water and burns.

Sodium sulfonate is widely used in the textile industry for reducing dyeing, reducing cleaning, printing and decolorization, and for bleaching silk, wool, nylon and other fabrics. Because it does not contain heavy metals, the bleached fabric has bright color and is not easy to fade. Sodium hydroxide can also be used in organic synthesis, such as reducing agent or bleaching agent in the production of dyes and drugs