Description

Dowex(R) 1X8 is a strongly basic anion exchange resin supplied in the chloride form, widely recognized for its high capacity and chemical stability. This product is essential for processes requiring the selective removal or separation of anions from aqueous and organic solutions. It is a critical component for industries such as pharmaceuticals, water treatment, and chemical synthesis, where reliable purification and ion exchange are paramount.

Application

• Water Purification & Demineralization: Used in mixed-bed and separate-bed deionizers to remove anions like nitrate, sulfate, and chloride, producing high-purity water for laboratory, industrial, and power generation use.
• Pharmaceutical Intermediate Purification: Employed in the purification of active pharmaceutical ingredients (APIs) and intermediates by removing acidic impurities and catalysts.
• Catalysis & Organic Synthesis: Serves as a basic catalyst or reagent support in various organic reactions, including esterifications and alkylations.
• Sugar & Sweetener Processing: Utilized in the decolorization and demineralization of sugar syrups and high-fructose corn syrup.
• Metal Recovery & Hydrometallurgy: Applied in the selective recovery of precious metals (e.g., gold, platinum) and the removal of toxic anions from mining wastewater.
• Laboratory Chromatography: Functions as a stationary phase for the separation of anions, organic acids, and other charged species in analytical and preparative columns.
• Nuclear Industry: Used for the removal of radioactive anions from process streams and waste solutions.

Basic Information

Product Name	Dowex(R) 1X8
CAS No.	12627-85-9
Molecular Formula	(C8H8)n·(C2H8NCl)n
Molecular Weight	N/A (Cross-linked polymer)
Synonyms	Dowex 1-X8; Amberlite IRA-400 (Cl form); Strongly Basic Anion Exchange Resin Type I; Polystyrene quaternary ammonium resin; Anion exchanger I; Tulsion A-23; Lewatit M 500; Purolite A400; Ionac A-540; Benzene, diethenyl-, polymer with ethenylbenzene, chloromethanated, N,N-dimethylmethanaminium-treated
EINECS	Contact for details

Quality Control

Every batch of Dowex(R) 1X8 is manufactured and tested under a stringent quality management system to ensure consistent performance. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) are available upon request, providing detailed data on total exchange capacity, moisture content, particle size distribution, and chloride form uniformity.

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 in a moist state; avoid freezing and prolonged exposure to direct heat or sunlight to prevent degradation of the functional groups. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Spherical beads, amber to brown
Ionic Form (as shipped)	Chloride (Cl-)
Total Exchange Capacity	≥ 1.2 meq/mL (min)
Moisture Holding Capacity	40 - 50 %
Particle Size Range (U.S. Standard Mesh)	50 - 100 mesh (Typical)
Uniformity Coefficient	≤ 1.6
Reversible Swelling (Cl- → OH-)	~ 18 %
Maximum Operating Temperature	60 °C (OH- form), 100 °C (Cl- form)

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