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, Titriplex®
About This Item
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product name
Potassium hydroxide solution, in ethanol c(KOH) = 0.5 mol/l (0.5 N) (20°C), Titripur®, reag. USP
agency
reag. USP
Quality Level
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
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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.
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 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
signalword
Danger
hcodes
Hazard Classifications
Eye Dam. 1 - Flam. Liq. 2 - Met. Corr. 1 - Skin Corr. 1B
Storage Class
3 - Flammable liquids
wgk_germany
WGK 1
flash_point_f
55.4 °F - closed cup
flash_point_c
13 °C - closed cup
Certificates of Analysis (COA)
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