1. Ukugcinwa kwexesha elide emoyeni kulula i-oxidize kwaye umbala uba mnyama, kunye ne-sublimation.Inevumba elimfiliba elingaqhelekanga kwaye iyacaphukisa ulusu.Inokutsha kwimeko yomlilo ovulekileyo kunye nobushushu obuphezulu.
2. I-Toxic, ngokukodwa iimveliso ezihlanjululwe ngokungaphelelanga ezixutywe ne-diphenylamine, ziya kuba yingozi xa zifakwe okanye zifakwe.Le mveliso inokufunxeka eluswini, ibangele ukwaliwa kwesikhumba, i-dermatitis, ukubola kweenwele kunye nezikhonkwane, ukudumba kwe-conjunctiva kunye ne-cornea, ukucaphuka kwesisu kunye namathumbu, ukonakala kwezintso kunye nesibindi, kwaye kubangele i-anemia ye-hemolytic, iintlungu zesisu, kunye ne-tachycardia.Abanini-zithuthi kufuneka banxibe izixhobo zokukhusela.Abo bathathe ngempazamo kufuneka bahlambe isisu ngokukhawuleza ukuxilongwa kunye nonyango.