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Acid Red 18

CAS No.: 2611-82-7
Synonyms:
Formula: C20H11N2Na3O10S3
Exact Mass: 603.92700
Molecular Weight: 604.47300
PSA: 241.69000
LogP: 6.06870
Reference Price: $108/kg Post Buying Request
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Ponceau 4R (known by more than 100 synonyms,:460–461 including as C.I. 16255, Cochineal Red A, C.I. Acid Red 18, Brilliant Scarlet 3R, Brilliant Scarlet 4R, New Coccine,:460 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-sulpho-1-napthylazo)- 2-napthol- 6,8-disulphonic acid, trisodium salt. Ponceau (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.:460; It is used in Europe, Asia and Australia, but has not been approved by the US FDA.:460