Section 06 Products of the chemical or allied industries 32 Tanning or dyeing extracts; tannins and their derivatives; dyes,pigments and other colouring matter; paints and varnishes; putty and other mastics; inks 32 04 Synthetic organic colouring matter and preparations and products 32 04 20 Synthetic organic products of a kind used as fluorescent brightening agents 32 04 20 00 Synthetic organic products of a kind used as fluorescent brightening agents Commodity Code Description 32 04 20 00 000 Synthetic organic products of a kind used as fluorescent brightening agents