Resistant and Regenerable Gel-Type Based Resins
Merck’s weakly acidic cation exchangers are completely resistant to strong alkalis, as well as aliphatic and aromatic solvents. In their H+ form, these gel-type based ion exchanger resins do not split neutral salts. Their ion exchange capacity is effective from pH 6 to 14, and relies on the pH value of the solution to be exchanged. Furthermore, their degree of ionization is comparable to that of acetic acid. For maximum efficiency, weakly acidic ion exchangers can be regenerated through treatment with dilute mineral acid, slightly above the stoichiometric ratio.
Ion exchanger IV
|Counter ion/supplied as||H+|
|Total ion exchange capacity (mval/mL)||>3.2|
|Maximum swelling %||75-100|
|Max. operating temperature °C||120|
|Particle size (mm)
|Moisture content %||45-55|
|Bulk density (g/l)||700|
Concentration in water %
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