1-NAPHTHOLBENZEIN INDICATOR REAG. PH EUR

Code: 1062020005 D2-231

Analysis Note

Identity (IR-spectrum): passes testIdentity (UV/VIS-Spectrum): passes testAbsorption maximum λmax.(perchloric acid (0,1 mol/l) in acetic acid): ...


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Analysis Note

Identity (IR-spectrum): passes testIdentity (UV/VIS-Spectrum): passes testAbsorption maximum λmax.(perchloric acid (0,1 mol/l) in acetic acid): 622 - 626 nmSpec. Absorptivity A 1%/1cm (λmax; 0.005 g/l;perchloric acid (0,1 mol/l) in acetic acid;calculated on dried substance): 640 - 950Transition range: pH 8,0 - pH 9,6; apricot - turquoiseblueLoss on Drying (105°C): ≤ 7 %Suitability as indicator (for non-aqueous titration): passes test

Packaging

5 g in Glass bottle

λmax622-626 nm (perchloric acid (0,1 mol/l) in acetic acid)
agencyreag. Ph. Eur.
bulk density120‑300 kg/m3
formsolid
InChI keyVDDWRTZCUJCDJM-SOYKGTTHSA-N
InChI1S/C27H18O2/c28-25-16-14-23(19-10-4-6-12-21(19)25)27(18-8-2-1-3-9-18)24-15-17-26(29)22-13-7-5-11-20(22)24/h1-17,28H/b27-24+
loss≤7% loss on drying, 105°C
mp243-245 °C
Quality Level200
storage temp.2-30°C
visual transition interval8.0-9.6, apricot to turquoise
Cas Number145-50-6
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