Thiourea Dioxide/TDO

I. Description of the productThiourea Dioxide (TDO or TUD) is also named as Formamidine Sulfinic Acid. Itsappearance is white crystal powder. Thiourea Dioxide is a stable compound with no strongreducing and oxidizing ability, and its dissolvability is 26.7g/l (20 degrees centigrade), while its PH is 5.0 in saturated solution. TDO appears terrific stable even in 20 -30 degrees centigrade solution, but when it is under heat or catalysesing by alkali, it decomposes gradually to produce sulfoxylic acid through formamidine sulfinic acid to exhibit a reducing actionII. Applications of the ProductTDO is a new kind of reducing agent that used as exchange of sodium hydrosulfite. It iswidely used in textile and paper making industry. This product is also used in leatherprocessing industry, paper, pulp and board industry, photographic industry, bleaching andreducing agents. This product is also a component of decolorisation agents. Inmacromolecule material industry, it is used as catalysis agent and stabilizer of resinicproducing, and it is also used in organic synthesization of sensitizing material, andmedicine, medical, spicery materials in fine chemicals, and also can be applied in therecycling and separating of heavy metals.III. Quality TermsPhysical & Chemical FeaturesName Thiourea DioxideByname Formamidine Sulfinic AcidAppearance & Odor White Crystal, odorlessMolecular Formula (NH2)2CSO2Molecular Weight 108.12Melting Point 126 Degrees centigrageCAS NO. 1758-73-2 or 4189-44-0Dangerous Goods Class 4.2Specific Gravity 1.68SpecificationsThiourea dioxide(%) ≥99%Thiourea(%) ≤0.1%Moisture(%) ≤0.05%Iron (Fe) (%) ≤10PPMSulphate(%) ≤0.17%Packing25kgs kraft paper compound plastic bags 25kgs plastic bags (with two inner layers) 50kgs fiber drums 80kgs, 200kgs, 500kgs, 1000kgs containing bagsaccording to the buyer's requestVI. Storage Points for AttentionStore in a cool (below 30 degrees centigrade ), dry, well ventilated area away from all source of ignition and out of direct sunlight. Keep away from incompatible materials. Keep containers tightly closed. Do not store in unlabeled or mislabeled containers. Protect from moisture. Do not store near combustible materials. Keep containers well sealed, seal only with original vent cap. Ensure pressure relief and adequate ventilation. Store separately from organics and reducing materials. Avoid contamination which may lead to decomposition.