Common Name: Sodium hydroxymethanesulfinate Synonyms: Formaldehyde sodium bisulfite | Sodium formaldehyde sulfoxylate | Formaldehyde sodium hydrosulfite | Sodium hydroxymethanesulfinate | Formaldehyde-sodium bisulfite adduct | Sodium hydroxymethylsulfinate | Sodium hydroxy methanesulfonate English Name: Sodium formaldehyde bisulfite CAS No.: 870-72-4 EINECS: 212-800-9 Molecular Formula: CH?NaO?S Molecular Weight: 134.087 Boiling Point: 184°C Melting Point: 200°C Flash Point: 184°C Appearance: Monohydrate crystallizes as needle-like crystals from water. Solubility: Water solubility 800 g/L Uses: 1. Used as a brightener in nickel plating to enhance brightness and leveling effects. 2. Serves as an intermediate for electroplating additives, used in formulating nickel plating brighteners. 3. Employed in the production of pharmaceuticals such as Carcinoma-M, Neoarsphenamine, and Isoniazid sulfonate sodium.