Adeegsiga Oxalic Acid ee Daabacaadda Dharka iyo Rinjiga

Isticmaalka Asiidh Oxalic ah
Warshadaha kiimikada, asiidhka oxalic waxaa loo isticmaalaa in lagu soo saaro pentaerythritol, cobalt oxalate, nickel oxalate, fuchsin aasaasiga ah, xirmooyinka reagent-ka oo dhammaystiran oo loogu talagalay falanqaynta birta iyo ciidda, reagent-yada kiimikada, iyo alaabada kale.
Hababka midabaynta degdegga ah, waxay u shaqaysaa sidii wakiil midab-sameeya oo hagaajiya oo hagaajiya.
Waxay u adeegtaa sidii wakiil caday ah oo loogu talagalay waxyaabaha cawska iyo qamadiga laga sameeyo (iyadoo ka faa'iideysanaysa sifooyinka yaraynta oxalic acid) iyo sidii ka saara wasakhda miridhku (oxalic acid waxay la falgashaa birta si ay u samayso oxalate bir ah oo milma, kaas oo si fudud loogu dhaqo biyo, sidaas darteedna ka saaraya wasakhda birta dharka).
Adeegsiga Oxalic Acid ee Daabacaadda Dharka iyo Rinjiga
(1) Ka saarista Wasakhda Midhaha ee Dharka
Marka birtu la kulanto oksijiin iyo qoyaan hawada ku jira, waxay samaysaa isku-dhis adag oo loo yaqaan miridhku. In kasta oo isku-darka saxda ahi uu ku kala duwan yahay xaaladaha samaysmeed, dhammaan miridhku wuxuu ka kooban yahay ion bir ah oo saddex-jibbaaran. Wasakhda miridhku ku yaal dharka suufka ah waxay sameeyaan cillado joogto ah oo ay tahay in laga saaro, asiidhka oxalic-na waa wakiil wax ku ool ah oo lagu baabi'iyo. Mabda'a ayaa ah in asiidhka oxalic uu la falgalo ion bir ah oo saddex-jibbaaran (Fe³⁺) si uu u sameeyo ion isku-dhafan oo aan lahayn ionic, [Fe(C₂O₄)₃]³⁻, kaas oo si fudud loogu milmo biyaha. Isticmaalka caadiga ah waa 20 g/L oo ah asiidhka oxalic oo leh qiyaastii 30 mL/L oo ah 98% asiidh acetic ah.
Fiiro gaar ah: Oxalic acid waxay dhaawici kartaa fiilooyinka. Daawaynta ka dib, dharka suufka ah waa in si fiican loogu raaciyaa biyo nadiif ah si looga saaro dhammaan asiidhka oxalic ee harsan. Haddii aan si fiican loo raacin, asiidhka oxalic ee khafiifka ah ayaa xoogaysan doona inta lagu jiro qalajinta, taasoo keenta dhaawac daran oo faybar ah iyo godad abuura.
Oxalic acid waxay sidoo kale ka saari kartaa wasakhda miridhku ka soo baxo dharka nayloonka, taasoo haddii kale sababi lahayd huruud.
(2) Ka saarista Gaaska Aashitada Nitrous inta lagu jiro horumarinta Midabada Ingrain
Marka la isticmaalayo habka sodium nitrite ee daabacaadda tooska ah iyadoo la adeegsanayo rinjiyeyaasha macdanta oo ay weheliyaan rinjiyeyaasha naphthol, nitrous acid ayaa la sameeyaa inta lagu jiro koritaanka sulfuric acid. Tani waxay keentaa in milixda sodium ee naphthol AS ee ku taal dharka ay sameeyaan daadad casaan-bunni ah, taasoo keenta dhul cad oo aan sinnayn. Si loo baabi'iyo nitrous acid, 1–2 g/L oo oxalic acid ah ayaa mararka qaarkood lagu daraa xalka soo koraya ee sulfuric acid iyadoo ah wakiil yareeya (beddelka formic acid, urea, ama sulfur). Oxalic acid waxay yareysaa nitrous acid una beddelaa gaaska nitrogen, taasoo ka hortageysa HNO₂ inay la falgasho AS si ay u sameyso iskudhisyo bunni ah.