1.09119
Potassium dichromate solution
c(K₂Cr₂O₇) = 0.020 mol/l, for determination of COD, ready-to-use volumetric solution for titration, Titripur®
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| A voi/SKU | Disponibilità | Prezzo |
|---|---|---|
1 L | Spedizione prevista il10 agosto 2026daMerck Life Science S.r.l. | 62,10 € |
Informazioni su questo articolo
Nome del prodotto
Potassium dichromate solution, for determination of COD c(K2Cr2O7) = 0.020 mol/l, Titripur®
Quality Segment
product line
Titripur®
form
liquid
quality
Analyzed in our ISO 17025 accredited QC lab
reaction suitability
reaction type: Redox Reactions
concentration
0.02 M
technique(s)
titration: suitable
pH
3.8 (20 °C in H2O)
density
1.0 g/cm3 at 20 °C
storage temp.
15-25°C
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This volumetric solution is analyzed by our calibration laboratory D-K-15185-01-00 which is accredited according to DIN EN ISO/IEC 17025 for analysis of amount-of-substance concentrations in volumetric solutions by DAkkS (Deutsche Akkreditierungsstelle - German National Accreditation Body). The accreditation certificate can be found at www.sigmaaldrich.com/ISO17025.
Packaging
Analysis Note
Amount-of-substance concentration 0.01990 - 0.02010 mol/L
Measurement uncertainty ± 0.00006 mol/L
Traceability NIST SRM
The concentration is determined by volumetric titration and refers to 20°C.
The amount-of-substance concentration of this volumetric solution is determined with standardized sodium thiosulfate solution (article number 1.09147). The sodium thiosulfate solution is standardized and traceable to a primary standard reference material (SRM) from the National Institute of Standards and Technology, Gaithersburg, USA (NIST SRM 136 potassium dichromate) by means of volumetric standard potassium iodate (article number 1.02404), certified reference material according to ISO 17034, analyzed by our accredited calibration laboratory of Merck KGaA, Darmstadt, Germany according to DIN EN ISO/IEC 17025. The uncertainty is expressed as expanded measurement uncertainty with a coverage factor k=2 covering a confidence level of 95%.
Note: The titer is a correction factor to correct for variations of the volumetric solution, the titration equipment, the temperature and other laboratory conditions. For correct titration results it is recommended to determine a titer with the laboratory specific equipment and under laboratory specific conditions directly after opening a new bottle and at regular time intervals.
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Danger
Hazard Classifications
Aquatic Chronic 3 - Carc. 1B - Muta. 1B - Repr. 1B
wgk
WGK 3
hcodes
Classe di stoccaggio
6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
Elenchi normativi
Forniamo informazioni su eventuali restrizioni prevalentemente per i prodotti chimici. Per altre tipologie di prodotto siamo in grado di fornire soltanto informazioni limitate. Nessuna segnalazione significa che nessuno dei componenti è citato in un elenco. È dovere dell’utilizzatore assicurarsi che il prodotto venga impiegato in maniera sicura e a norme di legge.
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