Dab tsi yog cov organic pigments?
Cov xim pleev xim rau hauv nruab nrab thiab cov xim inorganic dav dav, feem ntau muaj lub zog ua kom muaj xim ntau dua, hais kom yooj yim zom thiab tawg, tsis yooj yim rau nag lossis daus, xim yog qhov ci dua, tab sis hnub, tshav kub, huab cua tsis kam yog qhov tsis zoo. Cov khoom siv xim organic yog siv ntau hauv cov xim ntawm cov inks, lo lo ntxhuav, khoom siv roj hmab, khoom lag luam yas, khoom siv kev cai thiab khoom siv thiab khoom siv hauv tsev.
Cov xim xim ua qoob loo yog cov chav kawm ntawm cov xim ua los ntawm cov sib txuas nrog cov xim sib xyaw nrog cov xim thiab thaj tsam ntawm lwm cov khoom siv xim. Xim muaj cov khoom suav nrog lub hnub, dej nqus dej, tshuaj tiv thaiv acid, alkali tsis kam, organic hnyav tiv thaiv, kub tsis kam, siv lead ua ruaj khov, tawg thiab npog. Qhov sib txawv ntawm cov organic pigments thiab dyes yog tias lawv tsis muaj kev sib raug zoo nrog cov khoom xim, tsuas yog cov nplaum lossis cov yeeb yaj kiab tso tawm uas txuas rau saum npoo ntawm cov khoom, lossis sib xyaw nrog hauv cov khoom, kom tus kwv xim. Lub tshuab nruab nrab, cov khoom siv ntau lawm thiab cov txheej txheem sib txawv uas xav tau rau nws cov khoom lag luam zoo ib yam li kev tsim cov khoom siv, yog li cov organic xim muaj feem ntau npaj rau hauv kev lag luam zas.
