Highly Resistant and pH Independent


Merck’s strongly acidic cation exchanger resins are highly resistant to acids, bases and organic solvents, as well as reducing and oxidizing agents. The ion exchange capacity of these resins is completely independent of the pH value of the solution to be exchanged. This allows the resins to be used across the entire range from pH 0 to14 – without any limitations. In the reaction, the neutral salt is split into the respective acid, whereas the ion exchangers are transferred into salt form. The SO3H functional groups of our strongly acidic cation exchangers exhibit an ionization degree corresponding to that of a strong mineral acid.

Features and Benefits

  • Highly resistant to: acids; bases; organic solvents; reducing and oxidizing agents
  • Effective from pH 0 to 14
  • Ionization degree similar to strong mineral acid

Range of Applications

 

1. Water
Treatment

  • Softening
  • Demineralization
  • Partial
    demineralization
  • Separation of rare
    earth metal ions
  • Separation of amino acids

2. Analytical
Applications

  • Concentration
  • Separation of
    interfering ions

3. Food Stuff
applications

Product Information

Product
Ion exchanger
Ion Exchanger
Amberlite IR-120
Dowex 50 WX-8
Amberlyst 15
Dowex 50 WX-4
Order number 104765 115131 105221 115635 105238
Matrix Gel Gel Gel Macroporous Gel
Functional groups SO3- SO3- SO3- SO3- SO3-
Counter ion/supplied as H+ H+ H+ H+ H+
Total ion exchange capacity (mval/mL) >1.7 >1.7 >1.7 >1.75 >1.1
Maximum swelling % 7 7 3
Max.operating temperature °C 120 120 120 120
pH range 0-14 0-14 0-14 0-14 0-14
Particle size (mm) (mesh) ASTM 0.3-1.2
15-50
0.3-1.2
15-50
0.08-0.25
60-170
0.3-1.2
15-50
0.18-0.5
85-35
Moisture content % 45-55 45-55 50-56 52-57 64-72
Bulk density (g/l) ~800 ~800 ~800 ~800 ~760
Regenerant Concentration in water % HCl
5-10
H2SO4
2-4
NaCl
8-10
 
 
 
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