2. Academic Validation
  3. High pressure liquid chromatographic determination of 4,4'-(diazoamino)-dibenzenesulfonic acid in FD&C yellow no. 6

High pressure liquid chromatographic determination of 4,4'-(diazoamino)-dibenzenesulfonic acid in FD&C yellow no. 6

  • J Assoc Off Anal Chem. 1977 Jan;60(1):168-72.
D M Marmion
PMID: 401804
Abstract

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.

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