Thiourea Dioxide Product name: Thiourea Dioxide, TDO Molecular formula：CH4N2O2S Place of Origin: Yantai, China. Other names: formamidinesulfinic acid, FAS(in paper industry） Appearance: white crystal powder CAS No.: 1758-73-2 UN No.: 3341 HS Code: 2930.9090 Quality standard: HG/T 3258--2001 Description of goods: Thiourea dioxide is a new-type, environmentally friendly products used as substitute of rongalite. It has very high reduction potential, is non-toxic, very stable, non-toxic, tasteless and environmentally friendly. It has been widely used in the dyeing of vat dyes and sulfur dyes, bleaching of wool and real silk, cleaning of disperse dyes, cleaning of dye vat etc. It is also used as reducing agent, bleaching agent, plastic stabilizer, anti-oxidants for organic synthesis, and sensibilizer of sensitive materials. Applications: 1) Can be used as exchange of sodium hydrosulfite and organic syntheses in synthetic fiber industry 2) Used as reducing agent in printing and dyeing industry 3) Used in pulp bleaching and paper industry 4) Used as additive of polythene sensitizer of photographical emulsion Specifications: Thiourea Dioxide 99.0 % Min Thiourea 0.10 % Max Moisture 0.05 % Max Ash 0.17 % Max Fe 0.001 % Max Storage and Handling Should be stored in a cool, ventilated and dry place, Avoid moisture and insolation, keep away from oxidizing agents. Packing: 25 KG Kraft paper bag/ plastic woven bag. 50KG/100KG fiber drum. 500KG/1000KG FIBC bags