In headings 2904 to 2906, 2908 to 2911 and 2913 to 2920, any reference to halogenated, sulphonated, nitrated or nitrosated derivatives includes a reference to compound derivatives, such as sulphohalogenated, nitrohalogenated, nitrosulphonated or nitrosulphohalogenated derivatives.
Pos. 2904-2906, 2908-2911 og 2913-2920 omfatter foruden halogen-, sulfo-, nitro- og nitrosoderivater også blandingsderivater såsom sulfohalogenerede, nitrohalogenerede, nitrosulfonerede og nitrosulfohalogenerede derivater.