INS 124

INS124 is the International Numbering System for Food Additives. It is used as a synthetic colouring agent in food and drink products

INS124, Ponceau 4R, C.I. 16255, cochineal red A, C.I. acid red 18, brilliant scarlet 3R, brilliant scarlet 4R or new coccine is a synthetic colourant that may be used as a food colouring.

It is denoted by E Number E124. Its chemical name is 1-(4-sulfo-1-napthylazo)-2-napthol-6,8-disulfonic acid, trisodium salt. Ponceau (17th century French for “poppy-coloured”) is the generic name for a family of azo dyes.

Ponceau 4R is a strawberry red azo dye which can be used in a variety of food products, and is usually synthesized from aromatic hydrocarbons; it is stable to light, heat, and acid but fades in the presence of ascorbic acid.

It is used in Europe, Asia, and Australia, but has not been approved for human consumption by the United States Food and Drug Administration.


There is no evidence of carcinogenicity, genotoxicity, neurotoxicity, or reproductive and developmental toxicity at the permitted dietary exposures

The production process may result in unsulfonated aromatic amines present in concentrations of up to 100 mg/kg which may be linked to cancer. The lake pigment form of the colour additive can also increase the intake of aluminium beyond the tolerable weekly intake (TWI) of 1 mg/kg/week. Therefore, the limit for aluminium may be adjusted to accommodate for this.


Since the 1970s and the well-publicized advocacy of Benjamin Feingold, there has been public concern that food colourings may cause ADHD-like behavior in children.

These concerns have led the FDA and other food safety authorities to regularly review the scientific literature, and led the UK FSA to commission a study by researchers at Southampton University of the effect of a mixture of six food dyes (TartrazineAllura Red AC, Ponceau 4R, Quinoline Yellow WSSunset Yellow and Carmoisine, dubbed the “Southampton 6”) and sodium benzoate (a preservative) on children in the general population, who consumed them in beverages; the study published in 2007.

The study found “a possible link between the consumption of these artificial colours and a sodium benzoate preservative and increased hyperactivity” in the children; the advisory committee to the FSA that evaluated the study also determined that because of study limitations, the results could not be extrapolated to the general population, and further testing was recommended".

The European regulatory community, with a stronger emphasis on the precautionary principle, required labelling and temporarily reduced the acceptable daily intake (ADI) for the food colourings; the UK FSA called for voluntary withdrawal of the colourings by food manufacturers. However, in 2009 the EFSA re-evaluated the data at hand and determined that “the available scientific evidence does not substantiate a link between the colour additives and behavioural effects”.

There is no evidence to support broad claims that food colouring causes food intolerance and ADHD-like behaviour in children.It is possible that certain food colouring may act as a trigger in those who are genetically predisposed, but the evidence is weak.

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