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Phenol Red Indicator

Phenolsulfonphthalein

Product Size 25gm/100gm/500gm Grade Laboratory Reagent (LR)
Purity CAS No. 143-74-8
Molecular Formula C19H14O5S Molecular Weight 354.38
H.S. Code 29349990 Shelf Life 60 months
MSDS Certificate of Analysis (COAs)

Specifications

Appearance Bright red powder
Transition range
pH 6.5 Brownish yellow
pH 8.2 Red violet
Solubility 0.1% (ethanol) Clear golden yellow solution
Loss on drying at 110°C (1hr) < 5%
Absorptivity 1%,1cm, (pH 6.5) at ? max. 431.0nm 600 - 700
Absorptivity 1%,1cm, (pH 8.2) at ? max. 558.0nm 1100 - 1200

Safety Information and Hazard Symbols
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