Commission Regulation amending Regulation (EC) No 1272/2008 of the European Parliament and of the Council on classification, labelling and packaging of substances and mixtures as regards the modification of entries in Part 3 of Annex VI for 2-ethylhexanoic acid and its salts, boric acid, diboron trioxide, tetraboron disodium heptaoxide hydrate, disodium tetraborate anhydrous, orthoboric acid sodium salt, disodium tetraborate decahydrate, and disodium tetraborate pentahydrate