Technical standard (GB1626-88)
Appearance: White Crystals
Package:25kg net in plastic woven 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 bleaching products leather, wood and aluminum ect.
Printing Industry: Dyeing agent
Medicine Industry: For making tetracydine, HCl ect.
Others: As laboratory agent, solvents activator and basic materials for 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 |
/ |
/ |

