CPV code 24311410 designates Inorganic acids in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
24311410 sits under 24311400 (Hydrogen chloride, inorganic acids, silicon dioxide and sulphur dioxide) and groups 1 more specific sub-codes. When classifying a tender, choose the narrowest code that still covers the full subject of the contract.