Case C-380/12: Judgment of the Court (Second Chamber) of 23 January 2014 (request for a preliminary ruling from the Hoge Raad der Nederlanden (Netherlands)) — X BV v Staatssecretaris van Financiën (Tariff headings — Decolourising earth — Chapter 25 of the Combined Nomenclature — Tariff heading 2508 — Concept of washed products — Elimination of impurities without changing the structure of the product — Chapter 38 of the Combined Nomenclature — Tariff heading 3802 )