1.09114
Potassium hydroxide solution
c(KOH) = 0.5 mol/l (0.5 N), in ethanol, reag. Ph. Eur., ready-to-use volumetric solution for titration in non-aqueous media, Titripur®
Synonym(s):
Potassium hydroxide ethanol solution
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About This Item
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Product Name
Potassium hydroxide solution in ethanol, c(KOH) = 0.5 mol/l (0.5 N), Titripur®, reag. Ph. Eur.
Agency
reag. Ph. Eur.
Quality Level
vapor pressure
59 hPa ( 20 °C)
product line
Titripur®
form
liquid
autoignition temp.
425 °C (ethanol)
quality
Analyzed in our ISO 17025 accredited QC lab
expl. lim.
3.5-15.0 % (v/v) ethanol)
reaction suitability
reaction type: Acid-base reactions
Related Categories
1 of 4
This Item | 109115 | 109351 | 111587 |
|---|---|---|---|
| technique(s) titration: suitable | technique(s) titration: suitable | technique(s) titration: suitable | technique(s) titration: suitable |
| product line Titripur® | product line Titripur® | product line Titripur® | product line Titripur® |
| agency reag. Ph. Eur. | agency reag. USP | agency - | agency - |
| vapor pressure 59 hPa ( 20 °C) | vapor pressure - | vapor pressure - | vapor pressure - |
| form liquid | form liquid | form liquid | form liquid |
Application
- Voltammetric Determination: Potassium hydroxide solution in ethanol is used in voltammetric determination of antioxidants in various matrices. A recent study demonstrated its application in the voltammetric determination of the antioxidant 2,6-di-tert-butyl-p-cresol (T501) in transformer oil using a graphite electrode. This method enhances the sensitivity and accuracy of antioxidant detection, crucial for ensuring the stability and performance of oils and other industrial fluids (Zhou et al., Analytical Letters, 2021).
Features and Benefits
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 0.4975 - 0.5025 mol/L
Measurement uncertainty ± 0.0015 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 traceable to a primary standard reference material (SRM) from the National Institute of Standards and Technology, Gaithersburg, USA (NIST SRM 350 benzoic acid) by means of volumetric standard benzoic acid (article number 1.02401), 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.
Legal Information
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Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Dam. 1 - Flam. Liq. 2 - Met. Corr. 1 - Skin Corr. 1B
Storage Class Code
3 - Flammable liquids
WGK
WGK 1
Flash Point(F)
53.6 °F - (ethanol)
Flash Point(C)
12 °C - (ethanol)
Regulatory Information
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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