Description

Dowex MWA-1 Free Base 35-75 Mesh is a strongly basic, macroporous anion exchange resin supplied in the free base form. This product is engineered for high capacity and efficient ion exchange in demanding industrial processes, offering excellent chemical and physical stability. It is a critical component for water purification, chemical catalysis, and pharmaceutical manufacturing where the removal or exchange of anions is required. The 35-75 mesh particle size provides an optimal balance of flow characteristics and surface area for column operations.

Application

• Water Deionization & Purification: Key component in mixed-bed or separate-bed systems for producing high-purity water for power generation, electronics, and laboratory use.
• Chemical Processing & Catalysis: Acts as a catalyst or catalyst support in various organic synthesis reactions, including esterification and hydrolysis.
• Pharmaceutical Intermediates: Used in the purification and isolation of active pharmaceutical ingredients (APIs) and fine chemicals.
• Sugar & Sweetener Decolorization: Employed in the refining process to remove color bodies and ionic impurities from sugar syrups.
• Metal Recovery & Hydrometallurgy: Facilitates the selective recovery and concentration of valuable anionic metal complexes from process streams.
• Condensate Polishing: Used in power plants to remove ionic contaminants from steam condensate, protecting boiler systems.

Basic Information

Product Name	Dowex MWA-1 Free Base 35-75 Mesh
CAS No.	63993-67-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Dowex MWA-1 (OH form); Strongly Basic Anion Exchange Resin Type I; Macroporous Styrene-DVB Anion Resin; Quaternary Ammonium Polystyrene Resin; Amberlyst A26 (OH form) analogue; Anion Exchange Resin (Free Base); MWA-1 Ion Exchange Resin
EINECS	Contact for details

Quality Control

Every batch of Dowex MWA-1 Free Base is manufactured and tested under a rigorous quality management system. Our products undergo comprehensive analysis to ensure they meet precise specifications for exchange capacity, moisture content, particle size distribution, and chemical stability. Certificates of Analysis (COA) documenting these parameters are available upon request to support your quality assurance and regulatory compliance needs.

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). This product is hygroscopic (moisture-sensitive); ensure the container is sealed immediately after use to prevent absorption of atmospheric moisture, which can affect performance. Keep away from strong acids and oxidizing agents.

Specification

Item	Specification
Appearance	Spherical beads, light yellow to tan
Ionic Form (as shipped)	Free Base (OH⁻)
Matrix	Macroporous styrene-divinylbenzene
Functional Group	Quaternary ammonium (Type I)
Particle Size (Mesh)	35 - 75
Total Exchange Capacity (min.)	Contact for details
Moisture Content	Contact for details

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