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Changyi Haosen Biotechnology Co., Ltd.

Qingfu Village, liutuan Town, Changyi City, Shandong Province,Weifang,Shandong,China

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purity 99.9%min aminoiminomethane sulfinic acid


HG/T 3258-2010

2100 ~ 2300 / Metric Ton Get Latest Price


2100 per Metric Ton

1 Metric Ton

25kg bags, 50kg drums, 500kg bags, 1000kg bags

prompt delivery

7000 Metric Ton per Year

T/T, L/C, D/P, Western Union, Money Gram, PayPal

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Product Specification

Other Names : thiourea dioxide MF : F-A,S-J Purity (%) : 99% Appearance : white crystal powder Usage : Detergent Raw Materials Brand Name : Changyi Haosen CAS No. : - EINECS No. : -
PH : 4 UN NO. : 3341 IMO CLASS : 4.2 other name : thiourea dioxide formula : CH4N2O2S

Product Description

I. Description of the product
TDO ( Thiourea Dioxide ) is also named as FAS. Its appearance is white crystal powder. Thiourea Dioxide is a stable compound with no strong reducing and oxidizing ability, and its dissolvability is 26.7g/l(20),while its PH is 5.0 in saturated solution. TDO appears terrific stable even in 20-30 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 action.
II. Applications of the Product
TDO is a new kind of reducing agent that used as substitute 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. 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, medical, spicery materials in fine chemicals, and also can be applied in the recycling and separating of heavy metals.
III. Quality Terms
PhysicalChemical Features
Name                    FAS
Byname                  Aminoiminomethane Sulfinic Acid
Appearance Odor       White Crystal, odorless
Molecular Formula         (NH2)2CSO2
Molecular Weight          108.12
Melting Point             126
PH                      4 (1% Solution)
CAS NO.                *****73-2 or *****44-0
Dangerous Goods Class     4.2
Specific Gravity           1.68
Thiourea Dioxide(%)      99%
Thiourea(%)             0.2%
Moisture(%)             0.05%
Iron(Fe)(%)              10PPM
Sulphate(%)             0.17%
25kgs kraft paper compound plastic bags
25kgs woven plastic bags(with two inner layers)
50kgs fiber drums
80kgs, 500kgs, 1000kgs container bags
According to the buyers request
IV. Storage Points for Attention
Store in a cool ( below 30), 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 unlabelled 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.
V. Usage Points for Attention
Avoid contact with eyes, skin and clothing. Use with adequate ventilation. Do not swallow. Avoid breathing vapors, mists, or dust. Do not eat, drink, or smoke in work area. Prevent contact with combustible or organic materials. Label containers and keep them tightly closed when not in use. Wash thoroughly after handling.
VI. First-aid Measures
* InhalationRemove affected person to fresh air. Do not use mouth-to-mouth resuscitation. Seek medical attention if effects persist.
* Eye contactFlush eyes with running water for at least 15 minutes with eyelids held open.Seek specialists advice.
* Skin contactWash affected skin with soap and mild detergent and large amounts of water.
* IngestionRemove from exposure to fresh air immediately. If breathing is difficult, give oxygen.
* Do not use mouth-to-mouth resuscitation. Seek medical service immediately.
VII. Shipping Information
* Proper Shipping Name: Thiourea Dioxide
* UN Number: UN3341
* Hazard Class: 4.2
* Labels: 4.2( Flammable Solid )
* Packing Group:III

Contact Us

Contact Person :Ms. Qiao

Company:Changyi Haosen Biotechnology Co., Ltd.

Address:Qingfu Village, liutuan Town, Changyi City, Shandong Province, Weifang, Shandong, China,261303


Ms. Qiao < Changyi Haosen Biotechnology Co., Ltd. >
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