CPV code 24212600 designates Hydroxides for dyes and pigments in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
24212600 sits under 24212000 (Chromium, manganese, magnesium, lead and copper oxides and hydroxides) and groups 5 more specific sub-codes. When classifying a tender, choose the narrowest code that still covers the full subject of the contract.