AmberLite CR7300

Summary

Product identification

• Product Name: DuPont™ AmberLite™ CR7300 Resin
• Type: Food Processing Grade, Gel, Strong Base Anion Resin
• Primary Use: Organic Acid and Specialty Sugar Separations
• Document: Product Data Sheet, Form No. 45-D03712-en, Rev. 3, November 2025

Description

DuPont™ AmberLite™ CR7300 resin is a strong base anion resin with a uniform particle size, manufactured for use in simulated moving bed (SMB) chromatographic systems. It is designed for the separation of carboxylic acids (mono- and dicarboxylic) and specialty sugars. The resin's particle size and rapid kinetics are intended to enhance separation performance and minimize product dilution, which is particularly beneficial for fractionating mono- and dicarboxylic acids from residual dextrose and other acids. The resin is typically converted to the sulfate form for improved ionic stability in these applications.

Applications

• Organic acid chromatography
• Purification of organic acids from dextrose and other carbohydrates
• Chromatographic separation for specialty sugars
• Specialty separations

(Refer to the DuPont Separability Advisor™ Bubble Chart, Form No. 45-D01069-en, for guidance on separating binary combinations of organic acids and impurities.)

Typical Properties

Physical Properties

• Copolymer Matrix: Styrene-divinylbenzene
• Type: Gel, Strong base anion, Type I
• Functional Group: Quaternary amine
• Physical Form: Off-white or yellow, translucent, spherical beads

Particle Size (§):

• Particle Diameter (Cl⁻): 310 ± 30 µm
• Uniformity Coefficient: ≤ 1.15
• Broad Range (280 – 350 µm): ≥ 85%
• Narrow Range (300 – 340 µm): ≥ 60%
• Fine Beads (< 280 µm): ≤ 5%
• Coarse Beads (> 340 µm): ≤ 10%

(§ For additional particle size information, please refer to the Particle Size Distribution Cross Reference Chart, Form No. 45-D00954-en.)

Chemical Properties

• Ionic Form as Shipped: Cl⁻
• Total Exchange Capacity (Cl⁻ form): ≥ 1.3 eq/L
• Water Retention Capacity (Cl⁻ form): 46 – 52%

Density

• Particle Density: 1.1 g/mL
• Shipping Weight: 720 g/L (45 lb/ft³)

Stability

• Whole Uncracked Beads: ≥ 95%
• Swell (Cl⁻ → SO₄²⁻): 6%

Suggested Operating Conditions

• Temperature Range:
  • OH⁻ form: 5 – 35°C (41 – 95°F)
  • Cl⁻ and SO₄²⁻ form: 5 – 80°C (41 – 176°F)
• pH Range: Stable at 0 – 14
• Dissolved Oxygen Concentration:
  • Recommended: < 0.1 ppm
  • Maximum: 0.5 ppm

Simulated Moving Bed Operation: With optimized tuning (annually). It is strongly advised to remove oxygen from feed streams and elution water to help maximize resin life.

Hydraulic Characteristics

Bed expansion and pressure drop data are presented graphically in Figures 1 and 2 respectively.

• Figure 1: Backwash Expansion
  • Temperature: 10 – 60°C (50 – 140°F)
• Figure 2: Pressure Drop
  • Temperature: 10 – 60°C (50 – 140°F)
  • Viscosities: 1 cP and 4 cP

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