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Ponceau 4R (E124) is a red synthetic azo dye used in the UK as a food colouring, but banned in the USA and Norway. Ponceau 4R has been found to cause hyperactivity in children and also allergic reactions. Research Ponceau 4R
E124 is the EEC food labelling code for the colouring agent Ponceau 4R. Research E124
 
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