Description

Dowex-50W-Hydrogen is a strongly acidic cation exchange resin supplied in the hydrogen (H+) ionic form. This high-capacity, macroreticular resin is essential for critical separation, purification, and catalysis processes in demanding industrial and laboratory environments. It is a fundamental tool for chemists and process engineers in industries requiring precise ion control, such as pharmaceuticals, water treatment, and chemical synthesis.

Application

• Water Purification & Demineralization: Removal of cationic impurities (e.g., Ca²⁺, Mg²⁺, heavy metals) to produce high-purity deionized water for laboratories, power generation, and microelectronics.
• Pharmaceutical Intermediate Purification: Isolation and purification of active pharmaceutical ingredients (APIs), peptides, and antibiotics via ion exchange chromatography.
• Catalysis: Serving as a solid acid catalyst in organic synthesis reactions, including esterification, hydrolysis, and alkylation, offering advantages in separation and reusability.
• Sugar & Sweetener Processing: Decolorization and demineralization of sugar syrups, high-fructose corn syrup, and other sweeteners.
• Metal Recovery & Hydrometallurgy: Selective recovery of valuable or toxic metal ions from process streams, mining leachates, and wastewater.
• Analytical Chemistry: Used in sample preparation for ion chromatography and as a stationary phase for separating cations in laboratory analyses.
• Nuclear Industry Treatment of low-level radioactive wastewater by removing radioactive cations.

Basic Information

Product Name	Dowex-50W-Hydrogen
CAS No.	39453-27-5
Molecular Formula	(C₈H₈)ₙ (Poly(styrene-co-divinylbenzene) sulfonated)
Molecular Weight	N/A (Polymeric resin)
Synonyms	Dowex 50WX; Amberlite IR-120 (H+ form); Cation Exchange Resin (H+ form); Strongly Acidic Cation Exchanger; Polystyrene Sulfonic Acid Resin; Sulfonated Polystyrene-DVB Resin; Hydrogen Form Cation Exchange Resin; SAC Resin
EINECS	Contact for details

Quality Control

Our Dowex-50W-Hydrogen resin is manufactured under a strict quality management system. Each lot is tested to ensure consistent performance characteristics, including total exchange capacity, moisture holding capacity, particle size distribution, and uniformity coefficient. 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, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture uptake and performance degradation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Ionic Form	Hydrogen (H+)
Matrix	Polystyrene-DVB, Gel Type
Functional Group	Sulfonic Acid (-SO₃H)
Total Exchange Capacity	≥ 1.7 meq/mL (H+ form)
Moisture Content	45 - 55%
Particle Size Range	50 - 100 mesh (Standard Grade)
Uniformity Coefficient	≤ 1.7
Maximum Operating Temperature	150°C
pH Range	0 - 14

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