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Item

Index

 Superior Grade

First Grade

potassium carbonate content        

99.0

99.0

Insoluble in water content            

0.02

0.03

chloride (as KCL)content             

0.01

0.03

iron (Fe)content                     

0.001

0.002

Sulphur compound(as K₂SO₄)content  

0.005

0.005

Loss on calcination                  

0.60

0.80

Particle distribution(1.40mm)        

                 (180μm)        

       1.0

       90.0

        1.0

         85.0

Bulk density(g/ml)                   

1.3

1.2