[Studies on rejected food yellow No. 5 (sunset yellow FCF)].
One of the sunset yellow FCFs (Y-5) in the official inspection of coal-tar dyes in 1998 was rejected. The results of tests of the rejected sample were submitted to JSFA-VI except for a sub-spot by paper chromatography. HPLC of the raw materials, intermediates, and subsidiary dyes according to JSFA-VII was performed on the rejected and submitted samples of Y-5. The sub-spot in the rejected sample was identified as sulfanilic acid-azo-R salt, and its content was estimated at more than 5%.
tsuji@nihs.go.jp
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Tsuji
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Matsumura
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Nakamura
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Tonogai
D002851:Chromatography, High Pressure Liquid; D002854:Chromatography, Paper; D003033:Coal Tar; D003979:Diazonium Compounds / Q000032:analysis / Q000302:isolation & purification; D005505:Food Coloring Agents / Q000737:chemistry*; D005513:Food Inspection; D007564:Japan; D013425:Sulfanilic Acids / Q000032:analysis / Q000302:isolation & purification
D003979:Diazonium Compounds; D005505:Food Coloring Agents; D013425:Sulfanilic Acids; D003033:Coal Tar; C000469:diazobenzenesulfonic acid