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Composition
With two-component reagents, the reactants are in two separate solutions. HYDRANAL®-Solvent is a solution of sulfur dioxide and
imidazole in methanol. HYDRANAL®-Titrant is a solution of iodine, dissolved in a suitable solvent, with an exact titre and a high stability of the titre.
Stability
The titrants have a shelf life of three years, the solvents of five years.
Toxicity
Non-toxic E-Type reagents based on ethanol make safer Karl Fischer titration possible.
Advantages of the two-component titration
- Higher titration speed compared with volumetric one-component titration.
- Greater accuracy for small amounts of water.
- Higher buffer capacity.
- Exact and stable titre.
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Literature
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