Description

Dowex Marathon Msc (H) Ion-Exchange Resin is a premium-grade, strongly acidic cation exchange resin supplied in the hydrogen (H+) form, based on a macroporous polystyrene-divinylbenzene matrix. This robust resin is engineered for superior performance, offering high capacity, excellent physical stability, and resistance to osmotic shock and organic fouling in demanding environments. It is an essential component for industrial water treatment, chemical processing, and hydrometallurgy, where reliable ion separation and purification are critical.

Application

• Demineralization & Deionization: Core component in mixed-bed and two-bed systems for producing high-purity water for power generation, microelectronics, and pharmaceuticals.
• Chemical Process Catalysis & Purification: Used as a solid acid catalyst in organic synthesis and for the removal of metal cations from process streams in chemical manufacturing.
• Hydrometallurgy & Metal Recovery: Critical for the selective extraction, concentration, and purification of valuable metals like copper, nickel, and rare earth elements from leach solutions.
• Sugar & Sweetener Processing: Employed for decolorization, deashing, and inversion processes in the production of high-fructose corn syrup and refined sugar.
• Condensate Polishing: Removes trace cationic impurities from boiler feedwater and condensate return lines in steam systems to prevent corrosion and scaling.
• Wastewater Treatment: Effective for removing heavy metals (e.g., lead, cadmium, zinc) and ammonium ions from industrial effluent to meet environmental discharge standards.

Basic Information

Product Name	Dowex Marathon Msc (H) Ion-Exchange Resin
CAS No.	53025-53-9
Molecular Formula	(C8H8·C10H10·C8H8O3S)n
Molecular Weight	N/A (Cross-linked polymer)
Synonyms	Strongly Acidic Cation Exchange Resin (H+ form); Polystyrene sulfonic acid resin; Macroporous cation exchanger; DOWEX Marathon MSC-H; DOWEX MSC-1; DOWEX HCR-S; Amberlite IR-120 Plus; Lewatit S 1467; Purolite C-150; Gel Strong Acid Cation Resin
EINECS	Contact for details

Quality Control

Our Dowex Marathon Msc (H) resin is manufactured under a stringent quality management system. Each lot is tested against rigorous specifications for exchange capacity, moisture retention, bead size distribution, and physical integrity to ensure consistent, reliable performance. Certificates of Analysis (COA) detailing these parameters are provided with every shipment. Our quality commitment supports compliance with relevant standards for water treatment and industrial process applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at ambient temperature (15-25°C). The resin is supplied in a moist state and must not be allowed to freeze or dry out, as this can cause irreversible damage to the polymer matrix. Keep away from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Ionic Form as Shipped	Hydrogen (H+)
Matrix	Macroporous polystyrene-DVB
Functional Group	Sulfonic acid (-SO3H)
Total Exchange Capacity (min.)	≥ 1.8 eq/L (H+ form)
Moisture Holding Capacity	50 - 60%
Particle Size Range	0.3 - 1.2 mm
Uniformity Coefficient (max.)	≤ 1.7
Specific Gravity	1.2 - 1.3
Shipping Weight	Approx. 800 - 850 g/L
Maximum Operating Temperature	120°C (248°F)
pH Range	0 - 14

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