Sodium hydroxy methylene sulfonate PN, CAS No. 870-72-4, used to complex ... etc Sodium hydroxy methylene sulfonate PN, CAS No. 870-72-4, TECHNICAL DATA SHEET PN Chemical natureChemical name Sodium hydroxy ... °C)Well soluble in water.Secondary constituentMethyl aldehyde Application PN is used to complex with heavy metal ions such ... Nickel plating chemical additive/Sodium hydroxy methylene sulfonate PN