Specification:
Appearance
|
White fine
powder
|
Light Yellow
fine powder
|
Yellow fine
powder
|
Yellow
powder
|
Dark yellow or
gray powder
|
AL2O3(%)
|
30±1
|
30±1
|
30±1
|
30±1
|
27±1
|
Basicity (%)
|
45-60
|
45-60
|
65-85
|
75-90
|
75-90
|
Water insoluble, %≤
|
0.1
|
0.1
|
0.3
|
0.5
|
2.5
|
PH value
|
3.5-5
|
3.5-5
|
3.5-5
|
3.5-5
|
3.5-5
|
SO4-2 %≤
|
--
|
98
|
--
|
--
|
--
|
Iron(Fe)% ≤
|
0.005-0.03
|
0.03
|
--
|
--
|
--
|
Arsenic (As), % ≤
|
0.0002
|
0.0002
|
0.0002
|
0.0002
|
0.0002
|
Manganese (Mn), % ≤
|
0.0015
|
0.0015
|
0.0015
|
0.0015
|
0.0015
|
Cadmium (Cd), % ≤
|
0.0002
|
0.0002
|
0.0002
|
0.0002
|
0.0002
|
lead (Pb), % ≤
|
0.001
|
0.001
|
0.001
|
0.001
|
0.001
|
Mercury (Hg), % ≤
|
0.00001
|
0.00001
|
0.00001
|
0.00001
|
0.00001
|
Chromium (Cr+6), % ≤
|
0.0005
|
0.0005
|
0.0005
|
0.0005
|
0.0005
|
Ammonia
Nitrogen(N), %≤
|
0.01
|
0.01
|
0.01
|
0.01
|
0.01
|