METHYLTHYMOL BLUE SODIUM SALT METAL INDICATOR

Code: 1060840005 D2-231

Analysis Note

Identity (UV/VIS-Spectrum): passes testAbsorption maximum λ 1 (buffer pH 7.0): 602 - 606 nmAbsorption maximum λ 2 (buffer pH 7.0): 430 - 450 nmSpec. A...


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Analysis Note

Identity (UV/VIS-Spectrum): passes testAbsorption maximum λ 1 (buffer pH 7.0): 602 - 606 nmAbsorption maximum λ 2 (buffer pH 7.0): 430 - 450 nmSpec. Absorptivity A 1%/1cm (λ1max; 0.04 g/l; buffer pH 7.0; calc. on dried substance): ≥ 60Spec. Absorptivity A 1%/1cm (λ2max; 0.04 g/l; buffer pH 7.0; calc. on dried substance): ≥ 85Loss on drying (50 °C/ ﹤1 hPa; 3h): ≤ 7%Suitability as indicator (for metal titration): passes test

Packaging

5 g in Glass bottle

Amax602-606 nm (buffer pH 7.0), 430-450 nm (buffer pH 7.0)
bulk density570 kg/m3
formsolid
InChI keyDIZZDZCUMBBRSG-UHFFFAOYSA-J
InChI1S/C37H44N2O13S.4Na/c1-19(2)23-11-28(21(5)25(35(23)48)13-38(15-31(40)41)16-32(42)43)37(27-9-7-8-10-30(27)53(50,51)52-37)29-12-24(20(3)4)36(49)26(22(29)6)14-39(17-33(44)45)18-34(46)47;;;;/h7-12,19-20,48-49H,13-18H2,1-6H3,(H,40,41)(H,42,43)(H,44,45)(H,46,47);;;;/q;4*+1/p-4
loss≤7% loss on drying, 50°C/ ﹤1 hPa; 3h
pH6.2 (20 °C, 10 g/L in H2O)
Quality Level200
solubility460 g/L
storage temp.2-30°C
Cas Number1945-77-3
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