CPV code 24220000 designates Tanning extracts, dyeing extracts, tannins and colouring matter in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
24220000 sits under 24200000 (Dyes and pigments) and groups 5 more specific sub-codes. When classifying a tender, choose the narrowest code that still covers the full subject of the contract.