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, Titriplex^®

• 同義詞: Potassium hydroxide ethanol solution
• 分類程式碼代碼: 12352305
• NACRES: NA.21

屬性

• 產品名稱: 0.5mol/L 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.
• 品質等級: 200
• 蒸汽壓力: 59 hPa ( 20 °C)
• 產品線: Titripur^®
• 形狀: liquid
• 自燃溫度: 425 °C (ethanol)
• 品質: Analyzed in our ISO 17025 accredited QC lab
• expl. lim.: 3.5-15.0 % (v/v) ethanol)
• 反應適用性: reaction type: Acid-base reactions
• 濃度: 0.5 M
• 技術: titration: suitable
• pH值: 14 (20 °C in H₂O)
• bp: 78.3 °C/1013 hPa (ethanol)
• mp: -114.5 °C (ethanol)
• 轉變溫度: flash point 12 °C (ethanol)
• 密度: 0.85 g/cm³ at 20 °C
• 儲存溫度: 15-25°C

描述

應用

• 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).

特點和優勢

Accreditation:
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.

包裝

SKU-pack size numbers ending with a "3" are SmartChemicals with an RFID tag on the label for seamless data transfer to the instrument, e.g. xxxxxx1003 or xxxxxxx 4003. More information on www.sigmaaldrich.com/SmartChemicals

分析報告

Form liquid
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.

法律資訊

Titripur is a registered trademark of Merck KGaA, Darmstadt, Germany

安全資訊

• 象形圖: GHS02,GHS05
• 訊號詞: Danger
• 危險聲明: H225 - H290 - H314
• 防範說明: P210 - P233 - P234 - P280 - P303 + P361 + P353 - P305 + P351 + P338
• 危險分類: Eye Dam. 1 - Flam. Liq. 2 - Met. Corr. 1 - Skin Corr. 1B
• 儲存類別代碼: 3 - Flammable liquids
• 水污染物質分類（WGK）: WGK 1
• 閃點（°F）: 53.6 °F - (ethanol)
• 閃點（°C）: 12 °C - (ethanol)