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Ponceau 4R

Ponceau 4R
Ponceau 4R
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Chemical Name:Trisodium 1-(4-sulfo-1-naphthylazo)-2- hydroxyl -6,8-naphtalene disulfonate
Molecular Weight:604.48
Molecular Formulat:C20H11N2Na3O10S3
Color:
Odor:
Stability to Light:Good
Oxidation:FairOdorlessRed
Specification：
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
Heavy Metals(as Pb)
≤10ppm
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