Explanatory notes
… of the drying oil. These products usually consist of a chemical drier (lead borate, zinc naphthenate, zinc oleate, … wood or sulphate turpentine, white spirit, etc., (e.g., calcium naphthenate or cobalt naphthenate in white spirit) … This heading does not cover : (a) Boiled or otherwise chemically modified oils of heading 15.18 . (b) Separate …