Description

Rexyn 201 (Cl-So4) is a strongly acidic, macroreticular ion exchange resin in the chloride-sulfate form. This specialized resin is engineered for demanding industrial separation, purification, and catalysis processes where robust chemical stability is paramount. It is a critical component for chemical manufacturers, pharmaceutical producers, and water treatment facilities requiring high-capacity ion exchange media for applications involving strong acids and organic solvents.

Application

• Catalysis in Organic Synthesis: Acts as a solid acid catalyst for esterification, alkylation, and hydrolysis reactions, offering easy separation and reusability.
• Purification of Acidic Streams: Used to remove cationic impurities from process streams containing strong mineral acids or organic solvents.
• Decolorization & Deashing: Effective in the purification and decolorization of sugar syrups, organic acids, and fermentation broths.
• Pharmaceutical Intermediates: Employed in the isolation and purification of active pharmaceutical ingredients (APIs) and their intermediates.
• Chemical Recovery: Facilitates the recovery of valuable metals or catalysts from industrial waste streams.
• Laboratory Scale Separations: Serves as a reliable medium for chromatographic separations and sample preparation in analytical chemistry.

Basic Information

Product Name	Rexyn 201 (Cl-So4)
CAS No.	69011-47-8
Molecular Formula	(C8H8·C8H7SO3H)n
Molecular Weight	N/A (Cross-linked polymer)
Synonyms	Strongly Acidic Cation Exchange Resin; Polystyrene Sulfonic Acid Resin; Sulfonated Polystyrene Divinylbenzene Resin; Amberlyst-type Resin; Macroreticular Cation Exchanger; Acidic Ion Exchange Resin; Rexyn 201; Rexyn 201 Cl-SO4 Form
EINECS	Contact for details

Quality Control

Every batch of Rexyn 201 (Cl-So4) is manufactured under a strict quality management system. We ensure consistent performance through rigorous testing of key parameters such as total exchange capacity, moisture holding capacity, particle size distribution, and chemical stability. Certificates of Analysis (COA) documenting 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). This product is hygroscopic (moisture-sensitive); ensure containers are sealed immediately after use to prevent moisture uptake and performance degradation. Keep away from strong bases and incompatible materials.

Specification

Item	Specification
Appearance	Opaque, spherical beads
Ionic Form	Chloride/Sulfate
Matrix	Styrene-DVB, Macroreticular
Total Exchange Capacity	≥ 1.7 meq/mL (H+ form)
Moisture Holding Capacity	50 - 60%
Particle Size Range	0.3 - 1.2 mm
Uniformity Coefficient	≤ 1.7
Maximum Operating Temperature	120 °C
pH Range	0 - 14

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