Disenchant

You choose one common or uncommon magic item, which you must touch throughout the casting of this spell. When you finish casting the spell, the magic item is destroyed and it's material is turned into residuum dust. The amount of residuum created is determined by the rarity of the magic item that was destroyed by this spell, as described in the table below. A magic item conjured or created by a spell of limited duration, including spell scrolls and potions, is destroyed but doesn’t create residuum. Artifacts, attuned, cursed, and magic items created using a 9th level spell slot are not affected by this spell. 

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, you can target a rare magic item; using a spell slot of 6th level or higher, a very rare magic item; and using a spell slot of 8th level or higher, a legendary magic item. 

Disenchant Table