Merck 109114 1000 Potassium Hydroxide Solution in Ethanol 1 LT.

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Description
Catalogue Number	109114

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Product Information
Grade	Reag. Ph Eur
HS Code	3822 90 00
Quality Level	MQ200

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Applications
Application	Potassium hydroxide solution in ethanol c(KOH) = 0.5 mol/l (0.5 N) Titripur® Reag. Ph Eur,Reag. USP. ph value 14 (H₂O, 20 °C).

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Physicochemical Information
Boiling point	78.3 °C (1013 hPa) (ethanol)
Density	0.85 g/cm3 (20 °C)
Explosion limit	3.5 - 15.0 %(V) (ethanol)
Flash point	12 °C (ethanol)
Ignition temperature	425 °C (ethanol)
Melting Point	-114.5 °C (ethanol)
pH value	14 (H₂O, 20 °C)
Vapor pressure	59 hPa (20 °C)

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Safety Information according to GHS
Hazard Pictogram(s)	\n\n
Hazard Statement(s)	H225: Highly flammable liquid and vapour.\nH290: May be corrosive to metals.\nH314: Causes severe skin burns and eye damage.
Precautionary Statement(s)	P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.\nP233: Keep container tightly closed.\nP234: Keep only in original packaging.\nP280: Wear protective gloves/ protective clothing/ eye protection/ face protection/ hearing protection.\nP303 + P361 + P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water.\nP305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.\nP403 + 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\nStrongly contaminated halogen-free organic solvents: container A.

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Safety Information
Categories of danger	highly flammable, corrosive

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Storage and Shipping Information
Storage	Store at +15°C to +25°C.

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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)

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Specifications
Form	liquid
Amount-of-substance concentration	0.4975 - 0.5025
Measurement uncertainty	+/- 0.0015
Traceability	NIST SRM
The amount-of-substance concentration of this volumetric solution is analyzed by our quality control laboratory of Merck KGaA, Darmstadt, Germany according to DIN EN ISO/IEC 17025.\nThe concentration is determined by volumetric titration and refers to 20°C.\nThe 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%.\nNote: 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.