PN

Product Description
Chemical name: Formaldehyde sodium bisulfite
CAS Number: 870-72-4
Appearance:  Off-white powder
Molecular Weight: 134.09
Purity: ≥ 95%
Melting Point: 190.0 - 210.0 °C

Product Applications
Electroplating Industry：
1. Nickel Brightener & Leveler: Effectively improves brightness and micro-leveling of nickel deposits, resulting in denser, smoother coatings. Acts as a heavy metal complexing agent in plating baths to effectively complex copper, zinc, lead and other metallic impurities, purifying the bath and reducing defects.
2. Acid Copper Brightener High-Temperature Carrier: An excellent high-temperature carrier in acid copper plating processes, suitable for complex workpieces, maintaining stable performance across a temperature range of 15°C to 45°C.
3. Synergistic Application: Commonly used in combination with additives such as saccharin (primary brightener) and SPS to enhance deposit ductility and throwing power.
Mineral Processing Aid：Serves as a flotation agent for lead-zinc ores, helping to improve recovery rates of valuable metals.
Polymer Modification：Acts as a sulfonating agent for sulfomethylation modification of polymers (e.g., polysulfone) to prepare ultrafiltration membranes with improved hydrophilicity for wastewater treatment and other applications.
Surfactant：Can be used as a surfactant component in detergents, shampoos, body washes, and other personal care products.
Color Photograph Auxiliary：Used to prevent fading and staining of color photographs.
Organic Synthesis Catalyst：Exhibits catalytic activity in oxacyclization, alcohol esterification, and acylation reactions.