Section 06 Products of the chemical or allied 29 Organic chemicals 29 33 Heterocyclic compounds with nitrogen hetero-atom(s) only 29 33 52 - - Malonylurea (barbituric acid) and its salts 29 33 52 00 - - Malonylurea (barbituric acid) and its salts Commodity Code Description 29 33 52 00 000 - - Malonylurea (barbituric acid) and its salts