Oxalic Acid Carbohydrate Oxidation Method
Yore maeni tiyo ku starch man sukari calu piny ma jutiyo kudu man eketho gi doko nitric acid i 73-80 °C mi yubu oxalic acid. Ka wakwanu lanyuth pa starch, yore utiye kudu: 85% pa starch jupoko i pii ma tye ku 10% oxalic acid nyo kongo pa piny mukende, juyike ku acid, man judwokogi pi sawa abusiel mi nwangu glucose. I ngeye, nitric acid man iron-vanadium catalyst jumedo gi i 63 °C pi medo hydrolysis, man oxalic acid ju nwango nikadhu kud i refining ingey reaction.
Lembe ma pire tek utiye loko pa starch ni glucose, ma edoko oxalic acid ku nitric acid i bedo pa
Fe 3+ man V2O5V
catalysts. Yore maeni nyuthu piny ma jutiyo kudu ma yot, yore ma yot, tic ma yot, man lim ma nok, man ngom copo yero piny ma jutiyo kudu matung tung nimakere ku kite ma piny migi utiye kudu. I lembe mi nyak man bero mi lim, corn starch ubedo piny maber uloyu. Ento, peko pare uketho i iye nyak ma nok, camu kodhi madwong, bey ma lee mi yubu, man wel madwong pa nitrogen oxides i tail gas, ma rac man nyayu rac pa kabedu.

Shandong Pulisi Chemical ubedo ja China ma timo tic maber man ma mio oxalic acid (dihydrate, H2C2O₄·2H2O) ma leng pa 99.6%.

Textile & dyeng: Piny ma jwigo rangi, piny ma konyo mi loko rangi
Tiyu ku adila: Jam tiyo ku adila man jwigo adila
Tiyu ku cuma man piny: Kwanyo nyal, jwigo lum, lwoko marble
Metallurgy: Piny ma nyayu pii pi kwanyu cuma ma nen ungo
Organic synthesis: Intermediate pi kemikol ma ber, resin, man catalysts

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