Karl Fischer Titration Solution (Karl Fischer Reagent) 2.5 lt
15.413,91 TL
Brand
Stock Code
118.600.03
Price
14.012,64 TL + VAT
Money Transfer
15.105,63 TL
(%2,00 bank transfer discount)
* Installments starting from 1.768,10 TL!
Merck code: 188005
The Karl Fischer titration is used as a reference method for many substances and is a chemical analysis based on the oxidation of sulfur dioxide with iodine in a methanolic solution. Basically, the following chemical reaction takes place:
H2O + I2 + SO2 + CH3OH + 3RN -> [RNH]SO4CH3 + 2[RNH]I
Titration can be performed volumetrically or coulometrically. In the volumetric method, Karl Fischer solution containing iodine is added until excess iodine reaches the first level. The amount of iodine converted is determined from the burette volume of the iodine-containing Karl Fischer solution. In the charge measurement procedure, directly reacting iodine is formed in titration by electrochemical iodide oxidation until unreacted iodine is detected. Faraday's law can be used to calculate the amount of iodine produced from the required amount of electricity.
As a water-specific moisture determination method, Karl Fischer titration is suitable for samples with a high water content (titrimetry) and water content in the ppm range (coulometry). It was originally developed for non-aqueous liquids, but is also suitable for soluble solids or solids that release gas when heated.
The coulometric technique, which is the correct reference method, is also suitable for trace matter analysis and water content determination.
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