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Highly selective for multivalent cations including Ca²⁺, Mg²⁺, and heavy metals such as Ni²⁺ and Cu²⁺.
Optimized macroporous structure provides excellent kinetic performance and resistance to fouling in challenging feed streams.
Stable functionalization with sulfonic acid groups ensures consistent capacity and long service life under variable pH and temperature conditions.
Low osmotic swelling behavior minimizes bed expansion during regeneration, improving hydraulic stability in fixed-bed systems.
Compliant with global food-contact and pharmaceutical water standards (e.g., USP <645>, EP 2.2.43, FDA 21 CFR 173.25).
Purification of ultrapure water for semiconductor manufacturing and microelectronics rinsing processes.
Removal of hardness and trace metals from pharmaceutical process water and WFI (Water for Injection) loops.
Polishing step in nuclear power plant secondary coolant systems to control corrosion-inducing ions.
Pre-treatment for reverse osmosis feed water in high-recovery industrial desalination plants.
Catalyst support matrix and metal recovery in hydrometallurgical leach solutions.
| Chemical Type | Strong Acid Cation (SAC), Macroporous Polystyrene-DVB with Sulfonic Acid Groups |
| Product Form | Moist, Beaded Granular Resin |
| Appearance | Opaque, Amber to Light Brown Spherical Beads |
| Functional Group | –SO₃H (Sulfonic Acid) |
| Ionic Form | H⁺ (Hydrogen Form) |
| Particle Size Range (mm) | 0.3 – 1.2 mm |
| Uniformity Coefficient | ≤ 1.6 |
| Moisture Content (wt%) | 45 – 50% |
Q1: What is the primary functional group and matrix type of LANXESS LEWATIT MDS 2368?
A: LEWATIT MDS 2368 is a macroporous, strongly acidic cation exchange resin based on a styrene-divinylbenzene copolymer matrix, functionalized with sulfonic acid groups. Its macroporous structure provides high stability under varying pH and oxidative conditions, making it suitable for demanding industrial water treatment applications.
Q2: In which types of water treatment processes is LEWATIT MDS 2368 most commonly applied?
A: This resin is widely used in demineralization, softening, and selective removal of heavy metal ions from process streams—particularly in power generation, pharmaceutical water systems, and electronics-grade water production. It performs reliably in both upflow and downflow service modes and exhibits good resistance to fouling by organic matter and iron oxides.
Q3: How does LEWATIT MDS 2368 differ from gel-type strong acid cation resins?
A: Unlike gel-type resins, MDS 2368 features a permanently porous macroporous structure, enabling consistent ion exchange performance across a broad pH range and enhanced tolerance to oxidizing agents and suspended solids. This makes it especially appropriate for pretreated or challenging feedwaters where gel resins may degrade or foul more readily.
Q4: What regeneration chemicals and typical conditions are recommended for this resin?
A: Sodium chloride (NaCl) is the standard regenerant for softening applications, while hydrochloric acid (HCl) is typically used for full demineralization service. Regeneration efficiency depends on dosage, concentration, flow rate, and contact time—all of which should be optimized based on system design and feedwater quality. The resin is compatible with conventional fixed-bed and moving-bed regeneration protocols.
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