Oxalicacidstructuredoxalicacid,namelyoxalicacid,thesimplestErYuanSuan.Itisgenerallycolorlesstransparentcrystal,harmfultohumanbody,canmakethepersoninsidethephofthelostbalanceandinfluenceonchildren'sdevelopment,oxalicacidplaysanimportantroleintheindustryofoxalicacidcanderusting.Oxalicacidaroundinnature,ofteninoxalicacidsaltformsexistinFuNiuflowersandplantslikesheephoofgrass,sorrelandacidmouldgrassmembrane,almostalltheplantscontainingcalciumoxalate.)