Rondedzera muchidimbu dzimwe nzira dzinoshandiswa kugadzira verdigris.
Context:Nzira dzakasiyana-siyana dzakarondedzerwa dzokuwana patina iyi yebhuruu yakasvibirira pamhangura, ndarira, kana kuti ndarira. Pakutanga yaigadzirwa nokurembedza ndiro dzendarira pamusoro pevhiniga inopisa muhari yakavharwa kutozosvikira paganda regirini raumbwa pamhangura. Imwe nzira, yaishandiswa muMiddle Ages, yakanga iri yokubatanidza mitsetse yendarira kubhuroko remuti neacetic acid, ipapo kuvhara bhuroko rakavharwa nomucheka. Mavhiki mashomanene gare gare, bhokisi racho raifanira kucherwa, uye mavara akasvibira akabviswa. MuMontpellier, France, yomuzana ramakore rechigumi namasere, yaigadzirwa mudzimba dzomumba, "uko ndiro dzendarira dzaiiswa mumidziyo yevhu yakazadzwa newaini yakanyungudutswa". Maverdigris aichekwa vhiki nevhiki navakadzi vomumba. Mhangura ((II) acetate inogadzirwa nokurapa mhangura ((II) hydroxide neacetic acid.
- Vhara ndiro dzendarira pavhiniga inopisa - Kuviga mitsetse yemhangura nemabhuroko emapuranga uye asidhi yeacetic mumarara uye kuchera mavhiki gare gare - Kuisa ndiro dzendarira mumidziyo yevhu yewaini - Kubatanidza mhangura (II) hydroxide uye acetic acid