oxalic acid purity:99.6% min packing:25kg bag OXALIC ACID1.SpecificationPurity: 99.6% minPB: 0.001% maxFe: 0.0015% maxCl: 0.003% max 2.Packing:25kg bag 3.Using: Calico printing and dyeing;lanundry;tanning industry;bleaching straw and cotton linters;removing rust or ink stains;manufacturing oxalates,bule ink,celluloid,intermediates and dyes;metal polish 4.Export port:Vietnam and brazil