SAC resins are stable chemically and physically, and can operate across a wide pH range (0–14). They can also withstand high temperatures of 100–120°C.

 Strong acid cation (SAC) exchange resins are ion exchange resins with sulfonic acid functional groups that perform well in a variety of applications: 

Stability

SAC resins are stable chemically and physically, and can operate across a wide pH range (0–14). They can also withstand high temperatures of 100–120°C. 

Resistance

SAC resins are resistant to acids, bases, organic solvents, reducing agents, and oxidizing agents. 

Ion exchange capacity

The ion exchange capacity of SAC resins is independent of the pH of the solution being exchanged. 

Selectivity

Macroporous SAC resins are more selective than gel SAC resins. 

Applications

SAC resins are used in a variety of applications, including:

Water purification 

Water softening 

Wastewater treatment 

Purification of pharmaceuticals and food 

Chemistry 

Catalysis 

SAC resins come in two structures: gel and macroporous. Macroporous resins have a more robust pore structure than gel resins, which allows them to be used as catalysts and in non-polar applications.