Ponceau 4R

Ponceau 4R

Chemical Name:Trisodium 1-(4-sulfo-1-naphthylazo)-2- hydroxyl -6,8-naphtalene disulfonate
Molecular Weight:604.48
Molecular Formulat:C20H11N2Na3O10S3
Stability to Light:Good
Dye Content    ≥85.0%
Loss on Drying    ≤10.0%
sodium chlorides & sulphates    ≤8.0%
Water Insoluble Matter    ≤0.2%
Subsidiary Dyes    ≤3.0%
Arsenic(as As)    ≤1ppm



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