THYMOLPHTHALEIN INDICATOR ACS;REAG. PH EUR

Code: 1081750005 D2-231

Analysis Note

Identity (UV/VIS-Spectrum): passes testAppearance: White to almost white powder, eventually slightly yellowish.Clarity of solution (1 g/l; ethanol): passes test...


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Analysis Note

Identity (UV/VIS-Spectrum): passes testAppearance: White to almost white powder, eventually slightly yellowish.Clarity of solution (1 g/l; ethanol): passes testAbsorption maximum λmax. (buffer pH 10.5): 592 - 596 nmSpec. Absorptivity A 1%/1cm (λmax; 0.01 g/l; buffer pH 10.5; calculated on anhydrous substance): 800 - 900Transition range: pH 9.0 - pH 10.5 colourless - blueTransition range (according to ACS): passes testTransition interval (according Reag. Ph. Eur.): passes testLoss on drying (110 °C): ≤ 1 %

Packaging

25, 100 g in Glass bottle

λmax592-596 nm (buffer pH 10.5)
agencyreag. Ph. Eur.
bulk density400 kg/m3
colorwhite to almost white
formsolid
gradeACS reagent
InChI keyLDKDGDIWEUUXSH-UHFFFAOYSA-N
InChI1S/C28H30O4/c1-15(2)20-13-23(17(5)11-25(20)29)28(22-10-8-7-9-19(22)27(31)32-28)24-14-21(16(3)4)26(30)12-18(24)6/h7-16,29-30H,1-6H3
loss≤1% loss on drying, 110°C
mp253 °C
Quality Level200
storage temp.2-30°C
visual transition interval9.0-10.5, colorless to blue
Cas Number125-20-2
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