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Technical standad (GB1626-88)
Appearance:White Crystals
Package:25kg net in plastic waven bags lined with plastic bags
Uses
Electronic Industry : To make electronic materials to clean rate intergrate circuit board.
Metallurgy Industry: As precipitating and resolving agent or rare earth material ect.
Others: As laboratory agent,solvents activato and basic materialsfor chemical industry
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index |
Wonderful grade |
First grade |
Up to grade |
| purity(H2C2O4·H2O)% ≥ |
99.6 |
99.4 |
99.0 |
| suiphate group(SO4-2) % ≤ |
0.0010 |
0.003 |
0.005 |
| Ash % ≤ |
0.01 |
0.015 |
0.08 |
| heavy metal(Pb+2) % ≤ |
0.00005 |
0.0001 |
0.0005 |
| Fe+3 % ≤ |
0.00005 |
0.0001 |
0.0005 |
| Cl- % ≤ |
0.0005 |
0.0005 |
0.001 |
| Ca+2 % ≤ |
0.0001 |
0.00015 |
0.0005 |
| Al % ≤ |
0.0001 |
0.0001 |
0.0001 |
| Mg % ≤ |
0.00005 |
0.00001 |
0.00001 |
| Na % ≤ |
0.00015 |
0.0002 |
0.0005 |
| As % ≤ |
0.00001 |
0.00001 |
0.00001 | |
