Synthetic organic colouring matter and preparations based thereon, synthetic organic products of a kind used as fluorescent brightening agents or as luminophores, colour lakes and preparations based thereon
Sintetična organska barvila in preparati na njihovi osnovi, sintetični organski proizvodi, ki se uporabljajo kot fluorescenčna belilna sredstva ali kot luminofori, lak barve ter preparati na osnovi lak barv