Description

Dowex(R) 50Wx4 Hydrogen Form is a strongly acidic, gel-type cation exchange resin supplied in its hydrogen (H+) ionic form. This high-performance resin is engineered for exceptional capacity and stability in demanding industrial separation and purification processes. It is a critical component for water treatment, chemical processing, catalysis, and pharmaceutical applications where reliable ion exchange is required.

Application

• Water Demineralization & Softening: Removal of calcium, magnesium, and other cationic impurities from process water, boiler feed water, and ultrapure water systems.
• Chemical & Pharmaceutical Purification: Separation and purification of organic bases, amino acids, antibiotics, and other valuable compounds via ion exchange chromatography.
• Catalysis: Serving as a solid acid catalyst in esterification, hydrolysis, and alkylation reactions, offering advantages of easy separation and reusability.
• Metal Recovery & Hydrometallurgy: Selective extraction and concentration of valuable or toxic metal ions (e.g., copper, nickel, rare earth elements) from process streams and leach solutions.
• Sugar & Sweetener Processing: Decolorization, deashing, and purification of sugar syrups, high-fructose corn syrup, and other sweeteners.
• Analytical Chemistry: Used as a stationary phase in ion chromatography columns for the analysis of cations in various samples.

Basic Information

Product Name	Dowex(R) 50Wx4 Hydrogen Form
CAS No.	69011-20-7
Molecular Formula	(C8H8)n·(C4H6O3S)m
Molecular Weight	Contact for details
Synonyms	Dowex 50W-X4; Cation Exchange Resin 50Wx4; Polystyrene sulfonic acid resin; Strongly acidic cation exchanger; Amberlite-type resin (analog); Sulfonated polystyrene-divinylbenzene copolymer; Ion exchange resin H+ form; CAS 69011-20-7
EINECS	Contact for details

Quality Control

Our Dowex(R) 50Wx4 Hydrogen Form is manufactured under a strict quality management system. Each lot is tested against rigorous internal specifications for key parameters such as moisture holding capacity, exchange capacity, particle size distribution, and ionic form. Certificates of Analysis (COA) documenting these results are available upon request to ensure compliance with your process requirements.

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). Keep the resin moist and avoid freezing or exposure to extreme heat. Isolate from strong oxidizing agents and strong bases.

Specification

Item	Specification
Appearance	Tan to brown spherical beads
Ionic Form as Shipped	Hydrogen (H+)
Matrix	Polystyrene-DVB gel
Functional Group	Sulfonic acid
Total Exchange Capacity (min)	1.7 meq/mL (H+ form)
Moisture Holding Capacity	50-60% (H+ form)
Particle Size Range (U.S. Mesh)	50-100 mesh (150-300 µm)
Uniformity Coefficient (max)	1.7
Reversible Swelling (H+ → Na+)	~10%

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