Specs.:         
Purity (H₂C₂O₄.2H₂O)                                                 99.6% min.
Sulfate                                                                            0.08% max.
Chloride                                                                       0.001% max.
Iron                                                                                0.005% max.
Heavy metal                                                                 0.002% max.
Ignition 850C                                                                 0.08% max.
Calcium                                                                          5 ppm max.

Packing:    25kgs net plastic woven bag with inner plastic bag