title: A highly sensitive colorimetric method for the determination of carbodiimides.
mesh_terms: D001463:Barbiturates; D002234:Carbodiimides / Q000032:analysis*; D002863:Chromogenic Compounds; D003124:Colorimetry / Q000379:methods; D011725:Pyridines; D013053:Spectrophotometry
chemical_list: D001463:Barbiturates; D002234:Carbodiimides; D002863:Chromogenic Compounds; D011725:Pyridines; C018924:1,3-dimethylbarbituric acid; C023666:pyridine; C032232:barbituric acid