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Potassium thiosulfate

Synonyms:  potassium thiosulphate, potassium hyposulfate, KTS
Molecular formula: K2S2O3  . H2
Molecular weight:: 208.34   
CAS No.:10294-66-3 ( Crystals );     13446-50-9 ( Liquid )        EINECS No.:233-666-8        H.S.Code: 28323000.00    
Properties: colorless monoclinic crystal. Smellless, with cold and bitter taste. Relative Density 2.59(Anhydrate, 20℃). Soluble in water easily, and its solution is one kind of slight alkaline fluid. Soluble in turpentine and ammonia, insoluble in alcohol.

LIQUID FORM (SOLUTION)

Items

Specifications

Appearance :                            

Colorless transparent liquid

Purity [ as  K2S2O3 ]  (g / 100g ) :                   ≥

50

Purity [ as  K2O ]  ( g / 100g )  :                       ≥                                          25 (Calculated value)
Purity [ as S ]  ( g / 100g ) :                              ≤                                           17  (Calculated value)
PH  ( 25℃ )                             7--9 
Density  ( g / cm3 )                       1.385-1.550 
Free S   ( g / 100g )                                         ≤    1

Sulfate & Sulfite  [ as SO4 ]   ( g / 100g )        ≤

   2

 Fe  (  mg / kg )                                                ≤

     200

                                                     if calculate as w/v, then the K = 30% and S = 25%

Packing: In plastic drums of 250Kgs net, or following your demands.

 

CRYSTALS FORM

Items

Specifications

   Appearance :

White crystals 

   Purity [ as K2S2O3 . H2O ]                  % ≥

98

   Free S :                                               % ≤

0.4

   Sulfate & Sulfite [ as SO4 ]                 % ≤

1

   Fe                                                        % ≤

0.02

Packing: In plastic woven bags of 25kgs net,  or following your demands.


Application :  Used as a photographic fixing agent, dechlorinating agent after pulp is bleached or cotton fabrics are bleached. Or used as medicinal detergent and disinfectant.  In food Industry, it can be used as a chelating agent and antioxidant. For agricultural purpose, it can be used as potassium fertilizer and chlorine-free fertilizer. also as  pesticide, herbicide, acaricide
Transportation & storage:  kept in dry, dark and ventilating place. No mix with oxidants.  

   

 

 
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