Description

Dowex SBR OH Form is a strongly basic anion exchange resin supplied in the hydroxide (OH) form, widely recognized for its high capacity and chemical stability. This product is essential for critical separation, purification, and catalysis processes where reliable ion exchange performance is paramount. It serves key roles in industries such as pharmaceuticals, water treatment, chemical synthesis, and food & beverage processing, enabling the removal of contaminants and facilitation of specific reactions.

Application

• Water Purification & Demineralization: For the removal of anions such as nitrates, sulfates, and chlorides in ultrapure water production for power generation, laboratories, and electronics manufacturing.
• Pharmaceutical Intermediates Purification: Used in the isolation and purification of active pharmaceutical ingredients (APIs) and intermediates, particularly in the removal of acidic impurities.
• Catalysis in Organic Synthesis: Acts as a solid-phase basic catalyst for reactions including esterification, alkylation, and condensation, offering easy separation and reusability.
• Sugar & Sweetener Processing: Employed in decolorization and deashing steps to refine sugar syrups and high-fructose corn syrup, improving product quality and taste.
• Chemical Recovery & Metal Separation: Facilitates the recovery of valuable metals from industrial waste streams and the separation of anions in hydrometallurgical processes.
• Laboratory & Analytical Chromatography: Serves as a stationary phase for ion chromatography to separate and analyze ionic species in various samples.

Basic Information

Product Name	Dowex SBR OH Form
CAS No.	68445-20-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Dowex SBR-P (OH); Strongly Basic Anion Exchange Resin Type I; Polystyrene-divinylbenzene anion exchanger; Quaternary ammonium anion resin; Amberlite IRA-400 (OH form) equivalent; Anion exchange resin (strong base); Gel type strong base anion exchange resin; Styrenic strong base anion resin
EINECS	Contact for details

Quality Control

Every batch of Dowex SBR OH Form is manufactured and tested under a strict quality management system. We provide comprehensive Certificates of Analysis (COA) that detail key parameters such as total exchange capacity, moisture content, particle size distribution, and ionic form. Our quality assurance protocols ensure the resin meets the consistent performance standards required for industrial and laboratory applications.

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). The resin is supplied moist; do not allow it to dry out, as this can damage the polymer matrix. Keep away from strong acids and oxidizing agents. For long-term storage, ensure the container is sealed to prevent moisture loss or contamination.

Specification

Item	Specification
Appearance	Spherical beads, amber to brown
Ionic Form	Hydroxide (OH)
Matrix	Polystyrene-DVB, gel type
Functional Group	Quaternary Ammonium (Type I)
Total Exchange Capacity	≥ 1.0 meq/mL (min)
Moisture Holding Capacity	40 - 50 %
Particle Size Range	0.3 - 1.2 mm
Uniformity Coefficient	≤ 1.7

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