oxalic acid manufacturer: 1: legalized by kosher and ISO 9001:2000 ; 2: the price is the best competitve in china ; oxalic acid UsesAs purifying intermediate in pharmacy, precipitator in rare earths processing, and fiber bleacher, removing rust ItemIndex valueOxalic Acid ≥Ash ≤Heavy Metal ,(as Pb),%,≤Iron,(as Fe),%,≤Chloride,(as CL-1),%,≤