1.60341

Potassium hydroxide solution

c(KOH) = 0.5 mol/l (0.5 N), in ethanol, reag. USP, ready-to-use volumetric solution for titration in non-aqueous media, Titripur^®

• Wzór liniowy: KOH
• Numer CAS: 1310-58-3
• Masa cząsteczkowa: 56.11
• NACRES: NA.21
• UNSPSC Code: 12352320
• MDL number: MFCD00003553

Właściwości

• Nazwa produktu: Potassium hydroxide solution, in ethanol c(KOH) = 0.5 mol/l (0.5 N) (20°C), Titripur^®, reag. USP
• agency: reag. USP
• Quality Level: 200
• product line: Titripur^®
• form: liquid
• quality: Analyzed in our ISO 17025 accredited QC lab
• reaction suitability: reaction type: Acid-base reactions
• concentration: 0.4975 - 0.5025 (mol/L)
• technique(s): titration: suitable
• SMILES string: [K+].[O-][H]
• InChI: 1S/K.H2O/h;1H2/q+1;/p-1
• InChI key: KWYUFKZDYYNOTN-UHFFFAOYSA-M

Opis

Features and Benefits

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.

Analysis Note

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 determined with standardized hydrochloric acid solution (article number 1.09057). The hydrochloric acid solution is standardized and traceable to a primary standard reference material (SRM) from the National Institute of Standards and Technology, Gaithersburg, USA (NIST SRM 723 Tris(hydroxymethyl)aminomethane) by means of volumetric standard Tris(hydroxymethyl)aminomethane (article number 1.02408), 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

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

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Informacja o środkach bezpieczeństwa

• pictograms: GHS02,GHS05
• signalword: Danger
• pcodes: P210 - P233 - P234 - P280 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Flam. Liq. 2 - Met. Corr. 1 - Skin Corr. 1B
• Klasa składowania: 3 - Flammable liquids
• wgk: WGK 1
• flash_point_f: 55.4 °F - closed cup
• flash_point_c: 13 °C - closed cup
• hcodes: H225,H290,H314