Description

Amberlite(R) IRA-35 is a weakly basic anion exchange resin supplied in the free base form, widely recognized for its high capacity and excellent chemical stability. This product is essential for the selective removal and recovery of acidic compounds from aqueous and non-aqueous streams across various industries. Key users include manufacturers in the pharmaceutical, chemical, and water treatment sectors who require reliable purification and separation processes.

Application

• Pharmaceutical Purification: Used for the decolorization and removal of acidic impurities during the synthesis of active pharmaceutical ingredients (APIs) and intermediates.
• Catalyst Recovery: Effective in the recovery of precious metal catalysts, such as those based on palladium or platinum, from reaction mixtures in fine chemical synthesis.
• Water Demineralization: Employed in mixed-bed or separate-bed deionization systems to remove anions, including silica and carbonates, for the production of high-purity water.
• Sugar & Sweetener Processing: Facilitates the decolorization and deashing of sugar syrups and high-fructose corn syrup by removing organic acids and ionic color bodies.
• Chemical Separation: Applied in the separation and purification of organic acids, phenols, and other weak acids from process streams.
• Wastewater Treatment: Used to treat industrial effluent by adsorbing and removing toxic anions and organic acids, aiding in environmental compliance.

Basic Information

Product Name	Amberlite(R) IRA-35
CAS No.	76930-03-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polyamine-epichlorohydrin resin; Weakly basic anion exchanger; IRA-35; Amberlite IRA 35; Anion exchange resin, weakly basic; WBA resin; Polymeric amine resin; Ion exchange resin, Type II
EINECS	Contact for details

Quality Control

Our Amberlite(R) IRA-35 is manufactured under a strict quality management system. Each batch undergoes rigorous testing to ensure consistent performance characteristics such as total exchange capacity, moisture holding capacity, and particle size distribution. A Certificate of Analysis (COA) documenting these parameters is provided with every shipment to guarantee compliance with your technical requirements.

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 away from strong oxidizing agents. The resin is supplied in a moist state and should not be allowed to dry out, as this may affect its performance.

Specification

Item	Specification
Appearance	Opaque, spherical beads
Ionic Form (as shipped)	Free base
Total Exchange Capacity	≥ 1.2 meq/mL (min)
Moisture Holding Capacity	50 - 60%
Particle Size Range (US Mesh)	16 - 50
Uniformity Coefficient	≤ 1.7
Reversible Swelling (Cl⁻ → OH⁻)	20 - 30%
Maximum Operating Temperature	60°C (OH⁻ form), 100°C (Cl⁻ form)

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