DIAION CR11

Summary

Product identification

• Grade Name: DIAION™ CR11
• Type: Chelating Resin
• Matrix: Styrene-DVB, Highly Porous
• Functional Group: Iminodiacetate
• Ionic Form: Na⁺
• Chemical Structure: CH CH₂ CH₂N CH₂COONa CH₂COONa

DIAION™ CR11 is an iminodiacetate type chelating resin with high selectivity for multivalent metal ions, especially transition metal elements like Fe(III) and Cu(II). It offers rapid kinetics, high operating capacity, low swelling and shrinking, and excellent mechanical stability. It is recommended for chemical process separations and metals removal/recovery from wastewater.

The selectivity order for metal ions is: Cr³⁺ > In³⁺ > Fe³⁺ > Ce³⁺ > Al³⁺ > La³⁺ > Hg²⁺ > UO₂²⁺ > Cu²⁺ > VO²⁺ > Pb²⁺ > Ni²⁺ > Cd²⁺ > Zn²⁺ > Co²⁺ > Fe²⁺ > Mn²⁺ > Be²⁺ > Ca²⁺ > Mg²⁺ > Sr²⁺.

Operating limits

• Maximum Operating Temperature: 120 °C (Na⁺ form), 80 °C (H⁺ form)
• Effective pH Range: 2 - 6

Feed water / Regenerant

• Regenerant: HCl
• Regenerant Concentration: 4 - 10 % HCl
• Regenerant Level: 100 - 200 g/L
• Regenerant Flow Rate: 2 - 10 m/h
• Total Rinse Requirement: 10 - 20 BV

Mechanical / Hydraulic

• Minimum Bed Depth: 800 mm
• Service Flow Rate: 10 - 30 m/h

Typical Properties

• Shipping Density: 730 g/L
• Mean Particle Size: 560 μm
• Water Content: 55 - 65 %
• Whole Bead Count: 95 % min.
• Particle Size Distribution on 1180 μm: 5 % max.
• Particle Size Distribution through 355 μm: 2 % max.
• Effective Size: 0.40 mm min.
• Uniformity Coefficient: 1.6 max.
• Total Swelling (H⁺ to Na⁺): 28 %
• Cu Adsorption Capacity: 0.5 mmol/mL min.
• Calcium Breakthrough Capacity: 0.35 meq/mL-R min.

Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror