Properties
White crystals with a melting point of 70°C, deliquescent in air. Soluble in water and ethanol, gradually decomposes in aqueous solution.

Uses
Can be used as a dye intermediate, anti-staining agent for sulfur dyes, and color-protecting agent for dyes. It can also serve as a rust remover for ships and a nickel stripping agent in electroplating, and can be used to prepare vanillin, among others. Additionally, it can be used as a chemical reagent in chemical analysis.

Packed in plastic bags inside woven bags, each bag weighs 25kg. During storage and transportation, protect against moisture, water, fire, and direct sunlight. Store and transport in accordance with regulations for toxic substances.