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®
别名:
Potassium hydroxide ethanol solution
选择尺寸
About This Item
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产品名称
氢氧化钾溶液（乙醇基质）, c(KOH) = 0.5 mol/l (0.5 N), Titripur®, reag. Ph. Eur.
Agency
reag. Ph. Eur.
质量水平
蒸汽压
59 hPa ( 20 °C)
产品线
Titripur®
表单
liquid
自燃温度
425 °C (ethanol)
质量
Analyzed in our ISO 17025 accredited QC lab
expl. lim.
3.5-15.0 % (v/v) ethanol()
反应适用性
reaction type: Acid-base reactions
1 of 4
此商品 | 69478 | M7891 | 394866 |
|---|---|---|---|
| assay ≥98.5% (GC) | assay ≥97.0% | assay - | assay ≥98% |
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
| reaction suitability reagent type: derivatization reagent | reaction suitability reagent type: derivatization reagent | reaction suitability - | reaction suitability reagent type: derivatization reagent |
| bp 130-132 °C (lit.) | bp - | bp 130-132 °C (lit.) | bp 130-132 °C (lit.) |
| form liquid | form liquid | form liquid | form liquid |
| density 1.075 g/mL at 25 °C (lit.) | density - | density 1.07 g/mL at 25 °C (lit.), 1.075 g/mL at 25 °C (lit.) | density 1.075 g/mL at 25 °C (lit.) |
应用
- 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).
特点和优势
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.
包装
分析说明
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.
法律信息
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警示用语：
Danger
危险分类
Eye Dam. 1 - Flam. Liq. 2 - Met. Corr. 1 - Skin Corr. 1B
储存分类代码
3 - Flammable liquids
WGK
WGK 1
闪点(°F)
53.6 °F - (ethanol)
闪点(°C)
12 °C - (ethanol)
法规信息
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