Description

Amberlite IRA 45 Anion Exchange Resin, Weakly Basic Styrene Type (320) is a macroreticular, weakly basic anion exchange resin designed for the selective removal of strong acids from aqueous and non-aqueous streams. Its high capacity and excellent physical stability make it a critical component for ensuring product purity and process efficiency in demanding industrial applications. This resin is essential for industries requiring high-quality water treatment, metal recovery, and the purification of organic acids and pharmaceuticals.

Application

• Decolorization and Deacidification in sugar, sweetener, and organic acid (e.g., citric, lactic) purification processes.
• Water Demineralization as part of mixed-bed or two-bed systems for producing high-purity boiler feed and process water.
• Metal Recovery & Hydrometallurgy for the selective adsorption and concentration of anions like chromate, molybdate, and tungstate from waste streams.
• Catalyst & Reagent Recovery in chemical synthesis, particularly for scavenging mineral acids from reaction mixtures.
• Condensate Polishing in power plants to remove corrosive anions and protect turbine systems.
• Pharmaceutical Intermediates Purification for removing acidic impurities and achieving stringent purity specifications.

Basic Information

Product Name	Amberlite IRA 45 Anion Exchange Resin, Weakly Basic Styrene Type (320)
CAS No.	9055-98-5
Molecular Formula	(C8H8·C7H9N)n
Molecular Weight	N/A (Polymeric Resin)
Synonyms	Amberlite IRA-45; IRA 45; Weak Base Anion Exchange Resin; Styrene-Divinylbenzene Weak Base Anion Resin; Poly(styrene-co-divinylbenzene), chloromethylated and aminated; WBA Resin; Anion Exchange Resin, Type II; Dowex WBA; Lewatit Weak Base Anion Resin
EINECS	Contact for details

Quality Control

Our Amberlite IRA 45 resin is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key physical and chemical parameters, including total exchange capacity, moisture holding capacity, and bead integrity. A Certificate of Analysis (COA) detailing these specifications is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). Keep the resin in its original shipping container or a similarly sealed vessel to prevent moisture absorption (hygroscopic) and contamination. Do not allow the resin to freeze.

Specification

Item	Specification
Matrix	Styrene-Divinylbenzene Copolymer
Functional Group	Dimethylaminoethyl
Ionic Form as Shipped	Free Base
Total Exchange Capacity	≥ 1.4 eq/L (min)
Moisture Holding Capacity	50 - 60 %
Particle Size Range (0.3 - 1.2 mm)	≥ 95 %
Uniformity Coefficient	≤ 1.7
Reversible Swelling (OH- -> Cl-)	~ 15 %
Maximum Operating Temperature	40 °C (OH- form), 100 °C (Cl- form)
pH Range	0 - 9

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.