Technical standad (GB1626-88)
Appearance:White Crystals
Package:25kg net in plastic waven bags lined with plastic bags
Uses
Metallurgy industry :As precipitating and resolving agent for rare earth metal,etc.
Organic Synthesis:For 2133 rein,ures form aldehyde powder etc.
Light industry:Polishing of DA LI stone,removing rust bleachingproductssof leather,wood and aluminium ect.
Printing Industry:Dyeing agent
Medicine Industry:For making tetracydine,HCl ect.
Others:As laboratory agent,solvents activato and basic materialsfor chemical industry
| index |
Wonderful grade
|
First grade
|
Up to grade
|
| purity% ≥ |
99.6
|
99.4
|
99.0
|
| suiphate group % ≤ |
0.08
|
0.10
|
0.20
|
| ignition (850oC) % ≤ |
0.08
|
0.10
|
0.20
|
| heavy metal % ≤ |
0.001
|
0.002
|
0.02
|
| Iron content % ≤ |
0.0012
|
0.002
|
0.01
|
| chlorides % ≤ |
0.003
|
0.004
|
0.01
|
| calcium % ≤ |
0.0012
|
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|
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