Index Name

Liquid

Solid

Top- class

First-  class

Second- class

Top-

class

First-

class

Second- class

Appearance

Colorless

Light yellow

Light yellow

Relative Density(20°C)

            1.15

-----

(AI2O3)%>

12.0

10.0

8.0

30.0

29.0

27.0

Basicity(B)%

       40-85

40-90

40-90

water-insoluble

substense  %≤

0.1

0.2

0.5

0.5

1.0

1.5

PH value(1% Water-insoluble liquid)

3.5-5.0

3.5-5.0

(SO4 -²)%

3.5

9.8

(N)%≤

0.01

0.02

0.03

      0.01

-------

(As)%≤

0.0001

0.0002

----------

0.0002

-------

(Mn)%≤

0.0025

0.0050

----------

0.0075

0.010

-------

(Cr6+)%≤

    0.0005

----------

  0.0005

-------

(Hg)%≤

    0.00001

----------

 0.00001

-------

(Pb)%≤

0.0005

0.001

----------

  0.001

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