24311521 - Caustic soda

CPV code 24311521 in the EU Common Procurement Vocabulary refers to Caustic soda. It sits at level 6 of the CPV hierarchy as a subcategory within the 24 division. This code is nested directly under 24311500, narrowing the broader category into the specific area of caustic soda. As a leaf code, 24311521 has no further subdivisions and represents the most precise classification available in this branch — buyers should reference it directly in tender notices when the procurement primarily concerns caustic soda. Contracting authorities across the EU use 24311521 in TED notices and national procurement portals to signal that a tender relates to caustic soda.