ResinTech – Specialty Resins – SIR-500

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ResinTech SIR-500 is a sodium form macroporous chelating weak acid cation resin. SIR-500 has unique aminophosphonic chelating functionality and is particularly selective for alkaline earth metals such as calcium.  SIR-500 is intended for removal of hardness from saturated brine and for removal of divalent metals such as copper and nickel from wastewater and various process streams.  SIR-500 is supplied in the sodium form, can be special ordered in the hydrogen form (as SIR-500-H), or in the buffered form (as SIR-500 pH ADJ).


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Manufacturer ResinTech Inc
Series Resin
Model Number Specialty Resins
Part Number SIR-500

Polymer Structure Styrene/DVB
Polymer Type Macroporous
Functional Group Aminophosphonic
Physical Form Spherical Beads
Ionic Form (as shipped) Sodium
Total Capacity >1.7 meq/mL
Water Retention 50 to 70 percent (Cl Form)
Approximate Shipping Weight 41 lbs/cu.ft. (Cl Form)
Screen Size Distribution 16 to 50 (U.S. Mesh)
Maximum Fines Content 1 percent (less than 50 Mesh)
Minimum Sphericity 95 percent
Uniformity Coefficient 1.6 (Approximate)
Resin Color White to tan

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