3206200070
- Other colouring matter; preparations as specified in note 3 to this chapter, other than those of heading 3203, 3204 or 3205; inorganic products of a kind used as luminophores, whether or not chemically defined
- Pigments and preparations based on chromium compounds
- Copper chromite black spinel (C.I. pigment black 28) (CAS RN 68186-91-4)