Description

Dowex-50W-Hydrogen is a strongly acidic, macroreticular cation exchange resin supplied in the hydrogen (H+) ionic form. This product is essential for a wide range of industrial separation, purification, and catalysis processes due to its high capacity and chemical stability. It is a critical component for industries requiring precise ion removal or acid catalysis, including pharmaceuticals, water treatment, chemical synthesis, and food & beverage processing.

Application

• Pharmaceutical Purification: Used for the demineralization and purification of antibiotics, amino acids, and other active pharmaceutical ingredients (APIs).
• Ultrapure Water Production: A key component in mixed-bed and polishing demineralizers for power generation, semiconductor manufacturing, and laboratory water systems.
• Chemical Catalysis: Serves as a solid acid catalyst in esterification, alkylation, and hydrolysis reactions, offering easy separation and reusability.
• Sugar & Sweetener Processing: Employed in the decolorization and deashing of sugar syrups, high-fructose corn syrup, and other sweeteners.
• Metal Recovery & Hydrometallurgy: Effective for the selective removal and recovery of valuable or toxic metal ions from process streams and wastewaters.
• Analytical Chromatography: Used in ion-exchange chromatography columns for the separation and analysis of cations, amino acids, and peptides.
• Nuclear Industry: Applied in the treatment of low-level radioactive wastewater for the removal of fission product cations.

Basic Information

Product Name	Dowex-50W-Hydrogen
CAS No.	9051-01-8
Molecular Formula	(C8H8)n·(C4H6O2)m·(C3H6O)p (Polymer)
Molecular Weight	N/A (Cross-linked Polymer)
Synonyms	Dowex 50WX; Amberlite IR-120 (H+ form); Cation Exchange Resin (H+ form); Strongly Acidic Cation Exchanger; Polystyrene Sulfonic Acid Resin; Sulfonated Polystyrene-Divinylbenzene Copolymer; Sodium Polystyrene Sulfonate Resin (precursor); Hydrogen Form Cation Exchange Beads
EINECS	Contact for details

Quality Control

Our Dowex-50W-Hydrogen resin is manufactured under a strict quality management system. Each batch is tested to ensure consistent performance characteristics such as total exchange capacity, moisture holding capacity, particle size distribution, and uniformity coefficient. Certificates of Analysis (COA) documenting these key parameters 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 oxidizing agents.

Specification

Item	Specification
Appearance	Spherical Beads, Amber to Dark Brown
Ionic Form	Hydrogen (H+)
Matrix	Polystyrene-Divinylbenzene
Functional Group	Sulfonic Acid (-SO3H)
Total Exchange Capacity	≥ 1.7 meq/mL (H+ form)
Moisture Holding Capacity	45 - 55%
Particle Size Range	Contact for details
Uniformity Coefficient	≤ 1.7
Maximum Operating Temperature	150°C (H+ form)
pH Range	0 - 14

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