Rongalite is a chemical compound with the molecular formula Na+HOCH2SO2−. Rongalite This salt has many additional names, including Rongalit, sodium hydroxymethylsulfinate, sodium formaldehyde sulfoxylate, and Bruggolite.Rongalite It is listed in the European Cosmetics Directive as sodium oxymethylene sulfoxylate (INCI). It is water-soluble and generally sold as the dihydrate. Rongalite The compound and its derivatives are widely used in the dye industry.This reaction proceeds quantitatively, such that dithionite can be determined by its conversion to Rongalite, which is far less O2-sensitive and thus easier to handle.Rongalite C The original use of the compound was as industrial bleaching agent and as a reducing agent for vat dyeing.[1] Another large-scale use is as a reducing agent in redox-initiator systems for emulsion polymerization. Rongalite C One of the typical redox pair examples is t-butyl peroxide. A niche use is its use as water conditioner for aquaria as it rapidly reduces chlorine and chloramine and reacts with ammonia to form the innocuous aminomethylsulfinate ion.Rongalite C It is also used as an antioxidant in pharmaceutical formulation.