Description

Dowex(R) Hydrogen is a high-performance, strongly acidic cation exchange resin supplied in its hydrogen (H+) form. This product is essential for applications requiring the selective removal or exchange of cations from aqueous and non-aqueous solutions. It is a critical component in water purification, chemical processing, and pharmaceutical manufacturing, where consistent ion exchange capacity and chemical stability are paramount. Industries such as power generation, food & beverage, and laboratory research rely on its predictable performance for demineralization, catalysis, and purification processes.

Application

• Water Treatment & Demineralization: Primary application for producing high-purity deionized (DI) and ultrapure water in power plants, laboratories, and microelectronics manufacturing.
• Chemical Processing & Catalysis: Used as an acid catalyst in organic synthesis reactions, including esterification, alkylation, and hydrolysis, offering a reusable alternative to liquid acids.
• Pharmaceutical Purification: Employed in the purification of antibiotics, vitamins, and other active pharmaceutical ingredients (APIs) through ion exchange chromatography.
• Food & Beverage Processing: For decolorization, deashing, and removal of metal ions in the production of sweeteners, fruit juices, and alcoholic beverages.
• Hydrometallurgy & Metal Recovery: Selective recovery and separation of valuable or toxic metal cations (e.g., copper, nickel, uranium) from process streams and waste solutions.
• Sugar & Sweetener Refining: Softening and demineralization of sugar syrups to improve color, taste, and crystallization efficiency.

Basic Information

Product Name	Dowex(R) Hydrogen
CAS No.	62996-83-2
Molecular Formula	(C8H8·C4H6O3·C2H4)x
Molecular Weight	N/A (Cross-linked polymer)
Synonyms	Dowex 50W; Polystyrene sulfonic acid resin; Strongly acidic cation exchange resin (H+ form); Sulfonated polystyrene-divinylbenzene copolymer; Cation exchanger; Ion exchange resin (H+); Amberlite IR-120 (H+) equivalent; Gel-type sulfonic acid resin
EINECS	Contact for details

Quality Control

Our Dowex(R) Hydrogen resin is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including total exchange capacity, moisture holding capacity, particle size distribution, and uniformity coefficient. Certificates of Analysis (COA) documenting these specifications are provided with every shipment. Our quality commitment aligns with cGMP principles where applicable, supporting use in regulated industries.

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 / 59-77°F). The resin is moisture-sensitive; keep the original container sealed to prevent dehydration or uptake of atmospheric carbon dioxide. Isolate from strong oxidizing agents. For long-term storage, ensure the resin remains in its hydrated form as specified.

Specification

Item	Specification
Ionic Form	Hydrogen (H+)
Matrix	Polystyrene-DVB, Gel
Functional Group	Sulfonic acid (-SO3H)
Total Exchange Capacity	≥ 1.7 meq/mL (H+ form)
Moisture Holding Capacity	45 - 55%
Particle Size Range	300 - 1200 µm
Uniformity Coefficient	≤ 1.7
Maximum Operating Temperature	150°C (302°F)
pH Range	0 - 14

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