Item

Index

Liquid

       Solid

Excellent

Class 1

Excellent

Class 1

 Al2O3(/% )                  ≧

Basicity (%)

density(20℃)/(g/cm3)          ≧    

Insoluble substance (% )        ≤

PH(1% water solution)

 

10.0

40～85

1.15

0.1

3.5～5.0

10.0

40～85

1.15

0.3

3.5～5.0

30.0

40～90

—

0.3

3.5～5.0

28.0

40～90

—

1.0

3.5～5.0

 NH3-N ( /% )                ≤

 As ( /%)                    ≤

Pb (/%)                     ≤Cd(/%)                     ≤   Hg (/%)                      ≤Cr+6 (/%)                    ≤

0.01

0.0001

0.0005

0.0001

0.00001

0.0005

0.01

0.0002

0.001

0.0002

0.00001

0.0005

Note: The mass fractions of NH3-N, As , Pb, Cd, Hg and Cr6+ are calculated based on that of AL2O3 as 10.0%.