Kuyambitsa mankhwala athu atsopano a Solvent Black 5, omwe amadziwikanso kuti nigrosine alcohol, utoto wapamwamba kwambiri wa nigrosine wakuda wokwanira pazosowa zanu zonse zopaka utoto wa nsapato. Izi zimagwiritsidwa ntchito kwambiri pamakampani opanga nsapato popaka utoto ndi zikopa zakufa ndi zida zina ndipo timanyadira kuzipereka kwa makasitomala athu.
Zosungunulira zakuda 5, zomwe zimatchedwanso utoto wakuda wa nigrosine, wokhala ndi CAS NO. 11099-03-9, yopereka utoto wakuda kwambiri, imadziwika chifukwa cha kusinthasintha kwake komanso kugwirizanitsa ntchito zosiyanasiyana zamafakitale, monga utoto wamafuta, zokutira ndi pulasitiki. Zosungunulira zakuda zidapangidwa mwapadera ndipo zitha kugwiritsidwa ntchito ngati utoto wa nsapato za Polish.