Zinc formaldehyde sulfoxylate

Zinc formaldehyde sulfoxylate (CAS 24887-06-7), also known as zinc bis(hydroxymethanesulphinate), is an inorganic reducing salt used industrially as a bleaching and stripping agent.

Where is Zinc formaldehyde sulfoxylate used?

• Textile dyeing and finishing: discharge agent that selectively removes or reduces dye from fabric, enabling resist and discharge printing effects
• Leather processing: bleaches hides and controls oxidative discoloration during tanning
• Pulp and paper: brightens mechanical pulps and reduces yellowing in finished paper grades
• Water treatment: reducing agent that neutralizes residual oxidants such as chlorine and chromate compounds in industrial effluent streams
• It functions by releasing active reducing species under heat or alkaline conditions.

Commercial specifications

• Purity specifications commonly range from 90% to 98% active content for industrial use
• Packaging in 25 kg bags or bulk quantities
• Store in a cool, dry place to maintain chemical stability