Quinoline Yellow E 104

Systematic names: 1;2-(1,3-dioxoindan-2-yl)quinoline, 2;2-(2-Quinolyl)-1,3-indandione, 3;2-(2-Quinolyl)indan-1,3-dione.

Molecular mass: 273.29                                                                              Molecular formula: C₁₈H₁₁NO₂

Functional groups: ketone, pyridyl.

Uses: Used with other yellow colours, especially in smoked fish

Appearance: A synthetic coal tar dye, greenish yellow in colour.