Ponceau 4R

Ponceau 4R (also known as Food Red 7, C.I. 16255, Cochineal Red A, New Coccine, Acid Red 18, SX purple) is a colourant that may be added to foods to induce a colour change. It is denoted by E Number E124, and has the capacity for inducing an allergic reaction. Its chemical name is trisodium salt of 1-(4-sulpho-1-napthylazo)- 2-napthol- 6,8-disulphonic acid. Image File history File links Ponceau_4R.png Summary Description: Chemical structure of Ponceau 4R Author, date of creation: selfmade by Shaddack, 4 November 2005 Source: self-made Copyright: Public Domain (PD) Comments: b/w hires PNG; ChemDraw Licensing File links The following pages link to this file: Ponceau 4R ... Image File history File links Ponceau_4R.png Summary Description: Chemical structure of Ponceau 4R Author, date of creation: selfmade by Shaddack, 4 November 2005 Source: self-made Copyright: Public Domain (PD) Comments: b/w hires PNG; ChemDraw Licensing File links The following pages link to this file: Ponceau 4R ... For the mathematical constant see: E (mathematical constant). ... Pancreatitus can be caused by an Allergic Reaction to a food. ...

Ponceau 4R is a synthetic coal tar and red azo dye which can be used in a variety of food products. Coal tar is the liquid by-product of the distillation of coal to make coke. ... In chemistry, azo compounds generally have a molecular formula of the form R-N=N-R, in which R and R can be either aromatic or aliphatic. ...

Since it is an azo dye, it may elicit intolerance in people allergic to salicylates (aspirin). Additionally, it is a histamine liberator, and may intensify symptoms of asthma. Salicylic acid is a colorless, crystalline organic carboxylic acid. ... Aspirin or acetylsalicylic acid is a drug in the family of salicylates, often used as an analgesic (against minor pains and aches), antipyretic (against fever), and anti-inflammatory. ... Histamine is a hemolytic protein involved in local immune responses as well as regulating physiological function in the gut and acting as a neurotransmitter. ...

External link

Carcinogenic Potency Database Project entry for SX purple, alias Ponceau 4R