Content（with up to2% conditionin agents and anticaking agents,on dry basis）   %（含量）

97.5-100.5

99.0

Content（with anticaking agents on dry basis）%

99.0-100.5

99.0

Content（ on the dried basis）

97.5-100.5

99.0

Heave metals(as Pb)    ≤%

0.0002

<0.0002

AS                  ≤%

0.0001

<0.0001

Loss on drying(110℃,2h)        ≤%

0..006-0.01

0.008

Iodine(potassium iodide)   %               

        0.5

        0.02

Iron              

0.0016

     <0.0016

Sodium Ferrocyanide  ≤%

0.0013

     <0.0013