Karl Fischer Titration
Karl Fischer titration is a classic titration method in chemical analysis to determine trace amounts of water in a sample. The elementary reaction responsible for water quantification in the Karl Fischer titration is oxidation of sulfur dioxide with iodine. This elementary reaction consumes exactly one molar equivalent of water vs. iodine. Iodine is added to the solution until it is present in excess, marking the end point of the titration, which can be detected by potentiometry. The reaction is run in an alcohol solution containing a base, which consume the sulfur trioxide and hydroiodic acid produced.
Applications
- Determination of absolute water content of diverse materials from ppm to % level
- Direct analysis of water in orgnic solvents
- By use of oven method analysis of water content in plastics, silicones, compounds, etc
Technical Specifications
Metrohm Titrando851 & 860 KF Thermoprep
Metrohm Titrando851 for coulometric titration
- Generator electrode with diaphragm
- Double Platinum indicator electrode
- Tiamo software
Metrohm 860 KF Thermoprep for sample preparation
- Gas typ: N2, air
- Gas flow from 10-150ml/min
- Temperature operating range 50-250°C, dependents on sample typ
- Heated transfer line
- Sample vials 10ml
Contact
Chemical and Physical Analytics
E-mail: Analytic.SWM@osram.com
Chemical and Physical AnalyticsMittelstetter Weg 2, 86830 Schwabmünchen