Description

Dowex(R) 1X2 CAS NO 9085-42-1 is a strongly basic anion exchange resin supplied in the chloride form, featuring a styrene-divinylbenzene matrix with quaternary ammonium functional groups. This product is engineered for high capacity and efficient separation, purification, and deionization processes in demanding industrial applications. It is a critical component for industries requiring reliable ion exchange, including water treatment, pharmaceuticals, chemical synthesis, and hydrometallurgy.

Application

• Water Purification & Demineralization: Key component in mixed-bed and separate-bed deionization systems for producing high-purity water for power generation, electronics, and laboratories.
• Pharmaceutical Purification: Used for the isolation, purification, and decolorization of active pharmaceutical ingredients (APIs), antibiotics, and other fine chemicals.
• Chemical Processing: Effective for catalyst recovery, acid removal, and the separation of ionic species in various organic and inorganic synthesis processes.
• Sugar & Sweetener Refining: Employed in decolorization and demineralization steps to improve product quality and yield.
• Hydrometallurgy: Facilitates the recovery and concentration of valuable metals like gold, uranium, and rare earth elements from process streams.
• Analytical Chemistry: Serves as a stationary phase for ion chromatography and sample preparation techniques.

Basic Information

Product Name	Dowex(R) 1X2
CAS No.	9085-42-1
Molecular Formula	(C8H7·C8H8·C2H8NCl)n
Molecular Weight	N/A (Polymeric Resin)
Synonyms	Dowex 1-X2; Dowex 1x2; Amberlite IRA-400 (similar type); Strongly Basic Anion Exchange Resin; Quaternary Ammonium Polystyrene Resin; Anion Exchange Resin (Type I); Polystyrene quaternary ammonium chloride; Gel Type Anion Exchanger
EINECS	Contact for details

Quality Control

Our Dowex(R) 1X2 is manufactured under a stringent quality management system. Each batch undergoes rigorous testing to ensure consistent performance characteristics such as total exchange capacity, moisture holding capacity, particle size distribution, and chloride form uniformity. Certificates of Analysis (COA) detailing these specifications are available upon request 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 room temperature (15-25°C). Keep away from strong oxidizing agents. The resin should be kept moist and not allowed to dry out, as this can cause physical damage to the beads.

Specification

Item	Specification
Matrix	Styrene-Divinylbenzene Copolymer
Functional Group	Quaternary Ammonium (Type I)
Ionic Form (as shipped)	Chloride (Cl⁻)
Total Exchange Capacity	≥ 1.0 meq/mL (min)
Moisture Holding Capacity	40 - 50 %
Particle Size Range	16 - 50 mesh (U.S. Standard Sieve)
Uniformity Coefficient	≤ 1.7
Reversible Swelling (Cl⁻ → OH⁻)	~18%

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