1. Kev khaws cia ntev hauv cov cua yog qhov yooj yim rau oxidize thiab cov xim ua tsaus dua, nrog sublimation. Nws muaj qhov tsaus muag peculabor tsw thiab yog khaus rau daim tawv nqaij. Nws yog kev sib txuas ua ke nyob rau hauv cov ntaub ntawv ntawm qhib nplaim taws thiab siab kub.
2. Tshuaj lom zem, tshwj xeeb tshaj yog cov khoom ua tau zoo sib xyaw nrog cov diphenylamine, yuav yog tshuaj lom yog tias noj lossis nqus tau. Cov khoom no tuaj yeem nqus tau los ntawm daim tawv nqaij, ua rau tawv nqaij ua xua, kev ua phem rau cov plaub hau thiab cov tawv nqaij, thiab mob ntsws, mob plab, thiab tachycardia. Cov neeg ua haujlwm yuav tsum hnav cov iav tiv thaiv. Cov neeg uas tau coj nws los ntawm kev yuam kev yuav tsum muaj mob plab hnyuv sai sai rau kev kuaj mob thiab kev kho mob.
