AmberLite HPR4700 OH

Summary

Product identification

• Product Name: AmberLite™ HPR4700 OH Ion Exchange Resin
• Type: Uniform Particle Size, Gel, Strong Base Anion Exchange Resin
• Historical Reference: Previously sold as DOWEX MARATHON™ 550A OH Ion Exchange Resin.

Description

AmberLite™ HPR4700 OH is designed for condensate polishing in fossil-fired electric generating stations and industrial demineralization. It offers a balance of performance, operational simplicity, longevity, and cost-effectiveness. The OH⁻ form facilitates a faster startup with higher water quality and lower TOC (Total Organic Carbon) bleed compared to the Cl⁻ form. Its small average particle size, uniform bead size, and distinguishable light color are engineered for rapid kinetics and excellent separation, particularly when paired with AmberLite™ HPR1300 H. It is also recommended for post-RO mixed bed polishing where silica specifications are stringent and for single-bed demineralization applications without significant organic loading.

Applications

• Demineralization
  • Treating water with a high percentage of silica.
  • Removal of strong and weak acids.
  • Achieving the lowest silica leakage.
  • Single-bed industrial demineralization for high water purity.
• Condensate polishing.
• Mixed bed polishing.

Resin Pairings

• Condensate Polishing: AmberLite™ HPR1300 H Ion Exchange Resin (gel)
• Industrial Demineralization: AmberLite™ HPR1300 H Ion Exchange Resin (gel) or AmberLite™ HPR1200 H Ion Exchange Resin (gel)

System Designs

Compatible with all system technologies, including:

• Co-current
• Counter-current / Hold-down
• Packed beds
• Mixed beds

Typical Properties

Physical Properties

• Copolymer: Styrene-divinylbenzene
• Matrix: Gel
• Type: Strong base anion, Type I
• Functional Group: Trimethylammonium
• Physical Form: White to amber, translucent, spherical beads
• Particle Size (§):
  • Particle Diameter: 590 ± 50 µm
  • Uniformity Coefficient: ≤ 1.10
  • < 300 µm: ≤ 0.5%

  • 850 µm: ≤ 1.0%

• Stability: Whole Uncracked Beads: ≥ 95%
• Swelling: Cl⁻ → OH⁻: 25%
• Density:
  • Particle Density: 1.08 g/mL
• Shipping Weight: 660 g/L

Chemical Properties

• Ionic Form as Shipped: OH⁻
• Total Exchange Capacity: ≥ 1.1 eq/L (OH⁻ form)
• Water Retention Capacity: 55.0 – 65.0% (OH⁻ form)
• Ionic Conversion:
  • OH⁻: ≥ 93%
  • Cl⁻: ≤ 0.5%

Suggested Operating Conditions

• Temperature Range:
  • OH⁻ form ‡: 5 – 60°C (41 – 140°F)
  • Cl⁻ form: 5 – 100°C (41 – 212°F)
• pH Range:
  • Service Cycle: 1 – 14
  • Stable: 0 – 14

‡ Operating at elevated temperatures may impact resin life.

Hydraulic Characteristics

Estimated bed expansion and pressure drop are shown in figures within the original document. These figures are dependent on backwash flowrate, temperature, and service flowrate.

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