Description

Amberlite(R) Ira 958 CAS NO 79620-27-2 is a strongly basic, macroreticular, Type II anion exchange resin supplied in the chloride form. This high-capacity resin is engineered for superior performance in demanding demineralization and deionization processes, offering excellent physical stability and resistance to organic fouling. It is an essential component for industries requiring high-purity water, such as power generation, microelectronics, pharmaceuticals, and chemical processing.

Application

• Industrial Water Treatment: Primary application in mixed-bed and separate-bed deionizers for the production of high-purity water for boilers, cooling towers, and process streams.
• Power Generation: Critical for condensate polishing and makeup water demineralization in thermal and nuclear power plants to prevent corrosion and scaling.
• Microelectronics & Semiconductor Manufacturing: Used in ultrapure water (UPW) systems to achieve the extreme purity levels required for wafer rinsing and chemical processing.
• Pharmaceutical & Biotechnology: Integral to Water-for-Injection (WFI) and Purified Water (PW) systems, ensuring compliance with pharmacopeial standards (USP, EP).
• Chemical & Petrochemical Processing: Removal of anions and organic acids from process streams, catalyst recovery, and product purification.
• Food & Beverage Industry: Water softening and dealkalization for ingredient water, boiler feedwater, and cleaning-in-place (CIP) solutions.

Basic Information

Product Name	Amberlite(R) Ira 958
CAS No.	79620-27-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Amberlite IRA 958; Amberlite IRA958; Amberlite IRA-958; Strong Base Anion Exchange Resin Type II; Macroreticular Anion Exchange Resin; Polystyrene Quaternary Ammonium Resin; Anion Exchange Resin (Chloride Form); Styrene-DVB Anion Resin
EINECS	Contact for details

Quality Control

Every batch of Amberlite IRA 958 is manufactured under a stringent quality management system and tested to ensure it meets consistent performance specifications. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing key parameters such as total exchange capacity, moisture content, and bead size distribution are available upon request.

Storage

Preserve in a tightly closed container, protected from light. This product is hygroscopic (moisture-sensitive) and must be stored in a cool, dry, and well-ventilated area. The original, unopened container should be kept at ambient temperature (15-25°C). Avoid exposure to extreme temperatures and direct sunlight. Keep containers tightly sealed when not in use to prevent moisture uptake and contamination.

Specification

Item	Specification
Appearance	Spherical, opaque beads
Ionic Form as Shipped	Chloride (Cl-)
Matrix	Styrene-DVB, macroreticular
Functional Group	Quaternary ammonium, Type II
Total Exchange Capacity (min.)	1.0 meq/mL (Cl- form)
Moisture Holding Capacity	54 - 60 %
Particle Size Range	0.3 - 1.2 mm
Uniformity Coefficient (max.)	1.7
Reversible Swelling (Cl- to OH-)	20 % (approx.)

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