... acid molecular formula:H2C2O4the molecular mass:90.04character: colorless crystal or white crystaline powder, odorlessstorage:the sealing preservationrelative density:1 ... acid, oxalate and oxalic amide and other products, and with two ethyl oxalate and sodium oxalate, calcium oxalate, yield ... acid can be used for removing rust.But be careful with oxalic acid, strong corrosive to stainless steel. High ...