- In analytical chemistry, Karl Fischer titration is the classical titration method using coulometric titration or volumetric titration to determine the water content in the sample. It was invented in 1935 by the German chemist Karl Fischer. Today, titration is carried out with an automatic Karl Fischer titrator.
- The basic reaction used to quantify water in the Karl Fischer titration is the oxidation of sulfur dioxide ( SO 2 ) with iodine :
- This basic reaction consumes exactly one mole of water per mole of iodine. Iodine is added to the solution until it is in excess, marking the endpoint of the titration, which can be detected by potentiometric measurement. The reaction is carried out in an alcoholic solution containing a base, which consumes the stored sulfur trioxide and hydroiodic acid that is produced.
Representative products of the Hydranal chemical range
PacificLAB specialises in supplying Hydranal chemicals for Karl Fischer titrators to determine water content, with the following representative products:
34730 Hydral Solvent E, 1L
34732 Hydranal Titrant 5E, 1L
34801 Hydranal Titrant 5
34800 Hydranal Solvent
34698 Hydranal medium K,1L
34805 Hydranal Composite 5, 1L
34805 Hydranal Composite 5, 2.5L
34836 Hydranal coulomat AG, 500ml
34840 Hydranal coulomat CG, 50ml
34847 Hydranal Water standard 0.1
34849 Hydranal Water standard 1.00
34828 Hydranal Water standard 10.0
Advantages of using Hydranal chemicals for Karl Fischer titrators
- Chemicals with a purity of 99,9999%.
- Honeywell Fluka's philosophy is to always provide the best customer service with continuously renewed products and high quality.
- The Honeywell Fluka team, including research, development, QA, QC and sales, is well equipped with knowledge and continuously introduces new products that meet customer needs worldwide.
- The PacificLAB warehousing, delivery and service team is always friendly and enthusiastic, ensuring delivery at the earliest time.