Usage: Use for bleaching, dyeing and synthetic detergent, glass, paper, leather, oil and gas pipelines anticorrosive, metal smelting, surface treatment, filler, etc.
Specification:
|
Item
|
I
|
II
|
III
|
||
|
Excellence
|
First Class
|
First Class
|
Passed
|
||
|
Na2SO4,% ≥
|
99.3
|
99
|
98
|
95
|
90
|
|
Insolubility,% ≤
|
0.05
|
0.05
|
0.1
|
1
|
2
|
|
Mg,% ≤
|
0.1
|
0.15
|
0.3
|
0.4
|
0.5
|
|
Cl,% ≤
|
0.12
|
0.35
|
0.7
|
1
|
1.5
|
|
Fe,% ≤
|
0.002
|
0.002
|
0.01
|
0.04
|
--
|
|
Water,% ≤
|
0.1
|
0.2
|
0.5
|
2
|
5
|
|
Whiteness,% ≥
|
80
|
80
|
--
|
--
|
--
|