Name：sodium disulfite

CAS NO：7775-14-6

Molecular formula：Na₂O₄S₂

Molecular weight：174.1071

Structural formula：

Specification

Properties：white crystalline powder.

Purity：85%

Solubility：Easily soluble in water, insoluble in alcohol.

Use：Widely used in printing and dyeing industry, such as cotton fabric aid and silk fabric bleaching. Also used in medicine, mineral processing, copperplate printing. Paper industry used as bleach, etc. Food grade products used as bleach, preservative, antioxidant.

Storage：Should be stored in a cool, ventilated, dry warehouse. Prevent moisture, prevent direct sunlight, away from fire, do not contact with water or steam, do not store and transport with oxidant or other inflammable articles. Tie the mouth immediately after use, cover it and store it properly.