IRN 77

Summary

Product identification

AMBERLITE™ IRN77 Nuclear Grade Strong Acid Cation Resin.

Physical and Chemical Characteristics

• Physical form: Spherical amber beads
• Matrix: Styrene divinylbenzene copolymer
• Functional group: Sulfonic acid
• Ionic form as shipped: H⁺
• Total exchange capacity: ≥ 1.90 eq/L (H⁺ form)
• Moisture holding capacity: 49 to 55 % (H⁺ form)
• Shipping weight: 800 g/L
• Particle size:
  • Uniformity coefficient: ≤ 1.2
  • Harmonic mean size: 0.600 to 0.700mm
  • Fines (< 0.300 mm): 0.2 % max
• Whole beads: ≥ 95 %
• Breaking weight (average): ≥ 350 g/bead
• Particles > 200 g/bead: ≥ 95 %
• Ionic conversion: ≥ 99 % H⁺

Purity

The manufacturing process is controlled to minimize inorganic impurities. Special treatments remove soluble organic compounds.

• Aluminum (Al): ≤ 50 mg/kg dry resin
• Calcium (Ca): ≤ 50 mg/kg dry resin
• Cobalt (Co): ≤ 30 mg/kg dry resin
• Copper (Cu): ≤ 10 mg/kg dry resin
• Iron (Fe): ≤ 50 mg/kg dry resin
• Mercury (Hg): ≤ 20 mg/kg dry resin
• Potassium (K): ≤ 40 mg/kg dry resin
• Magnesium (Mg): ≤ 50 mg/kg dry resin
• Sodium (Na): ≤ 50 mg/kg dry resin
• Lead (Pb): ≤ 10 mg/kg dry resin

Suggested Operating Conditions

• Maximum operating temperature: 120 °C
• Minimum bed depth: 800 mm
• Service flow rate: 8 to 50 BV*/h
• Service velocity: 60 m/h maximum

*1 BV (Bed Volume) = 1 m³ solution per m³ resin

Applications

• Primary water treatment: Removal of fission products, activated corrosion products, and suspended matter. pH control of reactor coolant by removing excess ⁷Lithium.
• Radwaste treatment: Removal of radioactive cations like ¹³⁷Cesium from waste streams.
• Decontamination: Removal of cationic radioactive material from spent decontaminating solutions.

Hydraulic Characteristics

• Resin handling: Use deionised water.
• Backwashing: Minimum bed expansion of 50%.
• Pressure drop: Data provided in figures for various temperatures and flow rates at the start of the service run with clear water.

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