Molecular formula： (COOH)2·2H20
Molecular weight： 126
CAS No.： 144-62-7
Property：White crystal & powder, free floating.
Usage：
1.Electronic industry: to make electronic materials, to clean integrate circuit board.
2.Metallurgy industry: as precipitating and resolving agent for rare earth metal, etc.
3.Others: as laboratory agent, solvents, activator and basic materials for chemical industry.
Packing：Net in 25KG pp bag/kraft paper bag, jumbo bag.
Specification：
| Oxalic Acid Content | 99.6% Min | 99.6% Min | 99.6% Min |
| Sulphate (SO42-) | 20ppm Max | 50ppm Max | 100ppm Max |
| Chloride (Cl-) | 5ppm Max | 1ppm Max | 1ppm Max |
| Heavy Metals (Pb2+) | 5ppm Max | 5ppm Max | 5ppm Max |
| Ferrous (Fe3+) | 5ppm Max | 1ppm Max | 1ppm Max |
| Sio | - | 10ppm Max | 10ppm Max |
| Ca | 2ppm Max | 2ppm Max | 2ppm Max |
| Mg | 1ppm Max | 5ppm Max | 5ppm Max |
| Cu | 2ppm Max | 2ppm Max | 2ppm Max |
| Zn | 2ppm Max | 2ppm Max | 2ppm Max |
| Ni | 2ppm Max | 2ppm Max | 2ppm Max |
| Ignition Residue (850ºC) | 0.02% Max | 0.05% Max | 0.02% Max |