3206200050
- 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
- Nickel iron chromite black spinel (C.I. pigment black 30) (CAS RN 71631-15-7)