ResinTech – Specialty Resins – SIR-400

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ResinTech SIR-400 is a free base form macroporous heavy metal selective weakly basic anion resin. SIR-400 has unique thiouronium functionality and is able to remove mercury and other heavy metals to very low levels (when present as divalent cations). SIR-400 is also quite selective for noble metal cations. SIR-400 is intended for mercury removal and for removal/recovery of various precious metals, when present in cationic form.  SIR-400 is supplied in the free base form.


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Manufacturer ResinTech Inc
Series Resin
Model Number Specialty Resins
Part Number SIR-400

Polymer Structure Styrene/DVB
Polymer Type Macroporous
Functional Group Thiouronium
Physical Form Spherical Beads
Ionic Form (as shipped) Free Base
Total Capacity >1.5 meq/mL (FB Form)
Water Retention 35 to 50 percent (FB Form)
Approximate Shipping Weight 44 lbs/cu.ft. (FB 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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