High pressure liquid chromatographic determination of 4,4'-(diazoamino)-dibenzenesulfonic acid in FD&C yellow no. 6.
Fourteen analysts from 9 laboratories evaluated a high pressure liquid chromatographic procedure for the determination of 4,4'-(diazoamino)-dibenzenesulfonic acid (DAADBSA) in FD&C Yellow No. 6. Each collaborator analyzed 5 samples nominally containing 0-0.050% DAADBSA. The repeatability and reproducibility of the method are estimated to be 0.003% and 0.020%, respectively. The method has been adopted as offical fist action.
D001391:Azo Compounds / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid; D005505:Food Coloring Agents / Q000032:analysis*; D009282:Naphthalenesulfonates / Q000032:analysis*; D004124:p-Dimethylaminoazobenzene / Q000031:analogs & derivatives* / Q000032:analysis
D001391:Azo Compounds; D005505:Food Coloring Agents; D009282:Naphthalenesulfonates; D004124:p-Dimethylaminoazobenzene