Section 06 Products of the chemical or allied 29 Organic chemicals 29 31 Other organo-inorganic compounds 29 31 10 - Tetramethyl lead and tetraethyl lead 29 31 10 00 - Tetramethyl lead and tetraethyl lead Commodity Code Description 29 31 10 00 000 - Tetramethyl lead and tetraethyl lead