Description

Dowex(R) Hcr-W2 is a high-capacity, strongly acidic cation exchange resin supplied in the hydrogen (H+) form. This product is a critical component for advanced purification, separation, and catalysis processes across numerous industries. It is essential for applications requiring high chemical stability and consistent performance in demanding environments. Key users include manufacturers in the pharmaceutical, power generation, chemical synthesis, and ultrapure water production sectors.

Application

• Ultrapure Water (UPW) Production: Primary polishing and final ion exchange in semiconductor, microelectronics, and power plant boiler feedwater systems.
• Pharmaceutical Purification: Demineralization and deionization of process water, purification of active pharmaceutical ingredients (APIs), and catalyst recovery.
• Chemical & Catalytic Processes: Acts as an acid catalyst in esterification, alkylation, and hydrolysis reactions, offering a reusable alternative to liquid acids.
• Hydrometallurgy & Metal Recovery: Selective recovery and separation of valuable metal ions, such as copper, nickel, and rare earth elements, from process streams.
• Sugar & Sweetener Processing: Decolorization, demineralization, and inversion in the refining of sugar syrups and high-fructose corn syrup.
• Laboratory & Analytical Chemistry: Used in chromatography columns for ion analysis and sample preparation.

Basic Information

Product Name	Dowex(R) Hcr-W2
CAS No.	69011-22-9
Molecular Formula	(C8H8·C4H6O3·C2H4)x
Molecular Weight	N/A (Cross-linked polymer)
Synonyms	Dowex HCR-W2; Dowex 50WX2; Strongly Acidic Cation Exchange Resin; Sulfonated Polystyrene Divinylbenzene Resin; Cation Exchanger (H+ form); Polystyrene Sulfonic Acid Resin; Gel Type Cation Exchange Resin; Ion Exchange Beads
EINECS	Contact for details

Quality Control

Our Dowex(R) Hcr-W2 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against rigorous internal specifications for key parameters such as total exchange capacity, moisture holding capacity, bead size distribution, and chemical stability. A Certificate of Analysis (COA) detailing these results is provided with every shipment 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 ambient temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the original container is securely sealed after each use to prevent moisture uptake, which can affect performance. Keep away from strong oxidizing agents and strong bases.

Specification

Item	Specification
Appearance	Spherical Beads, Amber to Brown
Ionic Form (as shipped)	Hydrogen (H+)
Matrix	Styrene-Divinylbenzene Copolymer
Functional Group	Sulfonic Acid (-SO3H)
Total Exchange Capacity (min.)	1.7 meq/mL (H+ form)
Moisture Holding Capacity	45 - 55%
Particle Size Range	16 - 50 mesh (U.S. Standard)
Uniformity Coefficient (max.)	1.7
Maximum Operating Temperature	120°C (248°F)
pH Range (Stable)	0 - 14

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