Food
Color BRILLIANT BLUE FCF * C. I. FOOD BLUE 2 * FD & C BLUE 1 *
ACID BLUE 9
DEFINITION
Brilliant Blue FCF consists essentially of disodium alpha-(4-(N-ethyl-3-sulfonatobenzylamino) phenyl)-alpha-(4-N-ethyl-3-sulfonatobenzylamino, cyclohexa-2,5-dienylidene) toluene-2-sulfonate and its isomers and subsidiary colouring matters together with sodium chloride and/or sodium sulfate as the principal uncoloured components.
Brilliant Blue FCF is described as the sodium salt. The calcium and the potassium salt are also permitted.
Content not less than 85% total colouring matters, calculated as the sodium salt;
E 1% 1cm 630 at ca 630 nm
DESCRIPTION
Reddish-blue powder
IDENTIFICATION
a. Spectrometry
b. Blue solution in water
Maximum in water at ca 630 nm
PURITY
Water Insoluble matter
Not more than 0.2%
Subsidiary colouring matters
Not more than 6.0%
Organic compounds other than colouring matters
[Sum of 2-, 3- and 4-formyl benzene sulfonic acids] - Not more than 1.5% [3((ethyl)(4-sulfophenyl)amino) methyl benzene sulfonic acid] - Not more than 0.3%
