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

CPC v2.1 class (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) within 'Tanning or dyeing extracts; tannins and their derivatives; colouring matter n.e.c.'. UN Central Product Classification grouping of related products at this level.