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1.05544.1000 POTASSIUM HYDROXIDE SOLUTION MERCK
Product Information
HS Code 3824 99 92
Quality Level MQ200
Physicochemical Information
Density 0.79 g/cm3 (20 °C)
Explosion limit 2 - 13.4 %(V) (2-Propanol)
Flash point 12 °C (2-Propanol)
Ignition temperature 425 °C (2-Propanol)
pH value 13 (H₂O, 20 °C)
Safety Information according to GHS
Hazard Pictogram(s) Hazard Pictogram(s)
Hazard Pictogram(s)
Hazard Pictogram(s)
Hazard Statement(s) H225: Highly flammable liquid and vapour.
H290: May be corrosive to metals.
H315: Causes skin irritation.
H319: Causes serious eye irritation.
H336: May cause drowsiness or dizziness.
Precautionary Statement(s) P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233: Keep container tightly closed.
P234: Keep only in original packaging.
P240: Ground and bond container and receiving equipment.
P303 + P361 + P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P403 + P233: Store in a well-ventilated place. Keep container tightly closed.
Signal Word Danger
Storage class 3 Flammable liquids
WGK WGK 1 slightly hazardous to water
Disposal 1
Strongly contaminated halogen-free organic solvents: container A.
Safety Information
Categories of danger highly flammable, irritant
Storage and Shipping Information
Storage Store at +15°C to +25°C.
Transport Information
Declaration (railroad and road) ADR, RID UN 2924 , 3 (8), II
Declaration (transport by air) IATA-DGR UN 2924 , 3 (8), II
Declaration (transport by sea) IMDG-Code UN 2924 , 3 (8), II, Segregation Group: 18 (Alkalis)
Specifications
Form liquid
Amount-of-substance concentration 0.0995 - 0.1005
Measurement uncertainty +/- 0.0003
Traceability NIST SRM
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.
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 84 potassium hydrogen phthalate) by means of volumetric standard potassium hydrogen phthalate (article number 1.02400), 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.
*) The concentration of this volumetric solution decreases over time of storage. This is not a quality issue of this product, it is a property of this solution. Therefore we strongly recommend to perform a titer determination after opening the originally sealed bottle and every working day.
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