All Photos(1)

1.09114

Supelco

Potassium hydroxide solution in ethanol

c(KOH) = 0.5 mol/l (0.5 N), Titripur®, reag. Ph. Eur.

Quality Level

Agency/Method

reag. Ph. Eur.

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

concentration

0.5 M

application(s)

titration: suitable

pH

14 (20 °C in H2O)

bp

78.3 °C/1013 hPa (ethanol)

mp

-114.5 °C (ethanol)

transition temp

flash point 12 °C (ethanol)

density

0.85 g/cm3 at 20 °C

storage temp.

15-25°C

Related Categories

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.

Packaging

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

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 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

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

pictograms

FlameCorrosion

signalword

Danger

Hazard Classifications

Eye Dam. 1 - Flam. Liq. 2 - Met. Corr. 1 - Skin Corr. 1B

Storage Class Code

3 - Flammable liquids

WGK Germany

WGK 1

Flash Point F

53.6 °F - (ethanol)

Flash Point C

12 °C - (ethanol)

Certificate of Analysis

Certificate of Origin

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service