National food safety standard -
Food additive - Quinoline yellow
1 Scope
This standard is applicable to quinoline yellow, a food additive, which is obtained by sulfonation of 2-(2-quinolyl)-1,3-indandione.
2 Chemical name, molecular formula, structural formula and relative molecular mass of main component
2.1 Chemical name
2-(2-quinolyl)indan-1,3-dione-2-sulfonic acid disulfonate disodium salt
2.2 Molecular formula
C18H9NO8S2Na2
2.3 Structural formula
2.4 Relative molecular mass
477.38 (according to 2021 international relative atomic mass)
3 Technical requirements
3.1 Sensory requirements
The sensory requirements shall meet those specified in Table 1.
Table 1 Sensory requirements
Item Requirement Inspection method
Color and luster Yellow Take a proper amount of specimen and put it into a clean and dry white porcelain dish, and observe its color, luster and state in natural light
State Powder or particulate
3.2 Physical and chemical indexes
The physical and chemical indexes shall meet those specified in Table 2.
Contents
1 Scope
2 Chemical name, molecular formula, structural formula and relative molecular mass of main component
3 Technical requirements
Annex A Inspection methods
Annex B High-performance liquid chromatograms of quinoline yellow standard and non-pigment organic substances
Annex C Preparation method of barium chloride standard solution
