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Thymol Blue pH Indicator

Thymolsulfonphthalein

Product Size 25gm/100gm/500gm Grade Laboratory Reagent (LR)
Purity CAS No. 76-61-9
Molecular Formula C27H30O5S Molecular Weight 466.60
H.S. Code 29349985 Shelf Life 60 months
MSDS Certificate of Analysis (COAs)

Specifications

Solubility 0.1% (ethanol) Clear Solution
Transition range
pH 1.2 Red
pH 2.8 Greenish yellow
pH 7.8 Greenish yellow
pH 9.5 Blue
Absorptivity 1%/1cm, (pH 7.8) at ? max. 434.0nm 200 - 300
Absorptivity 1%/1cm (pH 9.5) at ? max. 596.0nm 450 - 550
Loss on drying at 110°C (1 hr) < 3%

Safety Information and Hazard Symbols
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