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1.09928 Supelco

Potassium dichromate solution

for 1000 ml, c(K₂Cr₂O₇) = 1/₆₀ mol/l (0.1 N) Titrisol®



Related Categories Analytical Reagents, Analytical/Chromatography, Titration, Volumetric Titration Reagents, pH Buffers for Calibration More...
Quality Level   100
form   liquid
reaction suitability   reaction type: Redox Reactions
concentration   1/60 M
application(s)   titration: suitable
pH   4.1 (20 °C in H2O)
density   1.06 g/cm3 at 20 °C
storage conditions   Store at +15°C to +25°C.



Replaces: PX1443-6

Analysis Note

Concentration after dilution to 1 liter: c(K₂Cr₂O₇) = 1/60 mol/l
Amount-of-substance concentration: 1/60 mol/l
The concentration of this solution was determined with sodium thiosulfate standard solution (article number 1.09147) standardized against volumetric standard potassium iodate (article number 1.02404). The determined titer at 20°C was 1.000 with an expanded measurement uncertainty of ± 0.004 (k=2 coverage factor for 95% coverage probability). The certified value is traceable to primary standard NIST SRM 136f (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard potassium iodate, measured in the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany in accordance to DIN EN ISO/IEC 17025.

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