Thiourea Dioxide

Thiourea Dioxide 
Other name: Formamidine Sulfinic Acid
CAS NO.: 1758-73-2
UN NO.:3341.
Class: 4.2



Product name: Thiourea Dioxide 

Other name: Formamidine Sulfinic Acid

CAS NO.: 1758-73-2

UN NO.:3341.

Class: 4.2

2. Molecular formula CH4N2SO2

  Molecular weight108.12


 Melting point126℃ PH value4 dangerous grade4.2

 Thiourea dioxide(TD or TUD)is also named as Formamidine sulfinic acid. Its appearance is white crystal powder. Thiourea is a stable compound with no strong reducing and oxidizing ability.

 Thiourea dioxide has many advantages, such as high reducibility, excellent heat stability, nonpoison, tasteless, easy operation, efficience, transportation and storage convenient etc. It is an exchange product of sodium hydrosulphite.


TDO is a new kind of reducing agent that used as exchange of sodium hydrosulfite. It is widely used in textile and paper making industry. This product is also used in leather processing industry,paper,pulp and board industry,photographic industry, bleaching and reducing agents. This product is also a component of decolorisation agents. In macromolecule material industry, it is used as catalysis agent and stabilizer of resinic producing,and it is also used in organic synthesization of sensitizing material, and medicine,medicial,spicery materials in fine chemicals, and also can be applied in the recycling and separating of heavy metals. The thiourea dioxide’s security performance is better, it does not pollute the environmental when using.














6. Packing

 According to the international marine transportation rule and customers request, we divide the packing into the following kinds:

a.  25kg Kraft paper compound plastic bags

b.  25kg plastic bags(with two inner layers)

c.  50kg fiber drums

d.  500kgs, 1000kgs flexible bags.  


Dry pure environment, the well ventilated condition, and the 30 ℃ warehouse temperature is good for storaging this product. Please Pay attention to moisture-proof, rainproof.

The products are exported to America, Japan, Europe, Korea and other countries and regions.

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