Oxalic Acid [ 144-62-7 ]

Specifications:
Index of quality grade a qualification
Purity (H2C2O4, H2O) % 99.6 99.4 99.0 p
Sulphate % acuities 0.08 0.10 0.20
Burning scraps (850oC) % acuities 0.08 0.10 0.20
Heavy metals % acuities 0.001 0.002 0.02
Iron content % acuities 0.0012 0.002 0.01
Chloride % acuities 0.003 0.004 0.01
The calcium content % 0.0012 / / more than

After purification specifications:
Index of quality grade a qualification
Purity (H2C2O4, H2O) % 99.6 99.4 99.0 p
Sulphate SO4-2) % 0.0010 0.003 0.005 acuities
Arsenic % acuities 0.01 0.015 0.08
Heavy metal (Pb + 2) % acuities 0.00005 0.0001 0.0005
Fe + 3 % acuities 0.00005 0.0001 0.0005
Cl - % acuities 0.0005 0.0005 0.001
Ca + 2 % acuities 0.00015 0.0001 0.0005
Al % acuities 0.0001 0.0001 0.0001
Mg % acuities 0.