sodium dithionite (sodium dithionite), also known as low sodium sulfite, insurance powder. Molecular formula Na2S2O4, molecular weight 174.11. It's a strong reducing agent.

Appearance and properties: white solid

Density: 2.13

Boiling point: 1390°C

Melting point: 300 °C

Water solubility: 250 g/L (20 oC)

Stability: Stable, but air sensitive. Incompatible with strong acids, strong oxidizing agents, water, moisture.

Storage: Store at RT.

Usage:

Insurance powder is widely used in the textile industry for reducing dyeing, reduction cleaning, printing and decolorization and for bleaching silk, wool, nylon and other fabrics, because it does not contain heavy metals, the color of the fabric after bleaching is bright and not easy to fade. In terms of various substances, insurance powder can also be used for food bleaching, such as gelatin, sucrose, honey, soap, animal (plant) oil, bamboo, China clay bleaching and so on. Insurance powder can also be used in organic synthesis, such as dyes, pharmaceutical production as a reducing agent or bleach, it is the most suitable for wood pulp paper bleaching agent.