PUYANG KAIYU CHEMICAL CO.,LTD.

A.Product:Thiourea dioxide,another name for Formamidinesulfinic Acid
Molecular Fonmula:(H2N)2CS
O2

Ⅰ.Physical & Chemical Composition

　1.The product is of ctystal appearing white or light yello
w.It digests at the melting point 126℃.It's a kind of compound of Reducer and anti-oxidant.The odor of liquor is lightly acid.
　2.Ramaims stable in acid liquor,but decomposes rapidly under usual conditions.The formamidinesulfnic acid as
a result of digestion is of strong reduction and enables coutrollable reducing ability of the product.
　3.Compared w
ith safty powder,the reduction potential of the product is higher and of lower decreas speed the decreasing only amount to 1/5 or the safty powder's.
　4.The product has good resist temptation stability,in a state of drier it remains stable bel
ow 70℃.
　5.The product has good safety reliability.Thers is no pollution during producing and using.


Ⅱ.Scope and Field of Application

　1.As reducing agent in printing & dyeing industry.As bleach & reduce dy
estuff for cotton,wool,and chemical fiber .As reducing agent for sulphard dyestuff.Also be application to textile in printing of disperse dye,striping, reprocession and floating color removing,etc.
　2.Can be used in pulp bleaching in paper man
ufacturing industry.
　3.As emulsion sensitizer being token in industry,it enables high stability of the exposure par
t of photographic paper.
　4.As modified catalyst for chemical fibre.It defend the modified fibre from turning yellow
.
　5.As oxygen resister in organic compounding.

Ⅲ.Accordance:ZBG13003-90

　Items z
88;Technique Indexes
　Content % 　≥99
　Thiourea Remains % 　≤0.1%
　
Moisture % 　≤0.05
　Sulphate % 　≤0.17
　Fe P/PM% 　≤10ppm
>B. Other Chemical Product, H2O2,etc

C. Construction Materials