Item

Index

  Standard value

Resuit of inspection

content (%)                    

99.0 ~100.5

99.8

Light  transmittance (%)        

 95

97.2

Readily carbonizable substance 

1.0

0.1

Iron (Fe)content (mg/kg)          

5 .0

5 .0

sulfate(take SO₄)content(%)     

0.01

0.01

Loss on dry                     

2.0

2.0

Arsenic(As)content (mg/kg)      

1

1

chlorides(CL)content (%)        

0.005

0.005

Oxalate                       

0.01

0.01

Calcium salt(%)                

0.02

0.02

Lead(mg/kg)                   

2

2