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Macroporous Adsorption Resin AB-8 is a high-performance adsorbent material designed for the extraction, separation, and purification of water-soluble and weakly polar substances. Developed by Hebei Lijiang Biotechnology Co., Ltd., this resin is a styrene-type weakly polar copolymer, utilizing divinylbenzene as a crosslinking agent and methyl acrylate as a monomer. Its unique properties make it a versatile solution for various industrial and scientific applications. This article provides a comprehensive overview of the product's features, technical specifications, applications, and the company behind it. Product Overview The Macroporous Adsorption Resin AB-8 is a weakly polar macroporous adsorption resin that exhibits exceptional stability and selectivity. Its physical structure, composed of polystyrene-divinylbenzene (PSD), ensures durability and resistance to chemical degradation. The resin's milk-white opaque spherical beads are not only easy to handle but also facilitate the visualization of colored organic compounds during processing. This feature is particularly beneficial in applications where color observation is critical for monitoring separation efficiency. One of the standout characteristics of AB-8 is its high specific surface area (≥480 m²/g) and large pore volume (0.73–0.77 ml/g), which enable it to adsorb a wide range of organic compounds efficiently. Its average pore size of 13–14 nm allows for the effective capture of molecules with varying molecular weights, making it suitable for both small and medium-sized compounds. The resin's low moisture content (65%–75%) and high mechanical strength further enhance its performance in industrial settings. Technical Specifications Parameter Specification Appearance Milky white opaque spherical beads Resin Structure Polystyrene-divinylbenzene (PSD) Polarity Weakly polar Moisture Content 65%–75% Particle Size Range 60–16 mesh (0.3–1.25 mm) ≥90% Average Pore Size 13–14 nm Pore Volume 0.73–0.77 ml/g Porosity 42%–46% Real Density 1.05–1.09 g/ml Bulk Density 0.65–0.70 g/ml Specific Surface Area ≥480 m²/g Adsorption Capacity ≥45 mg/g Key Features and Advantages The Macroporous Adsorption Resin AB-8 offers a range of features that make it a preferred choice in various industries: Excellent Stability: The resin is insoluble in acids, alkalis, and organic solvents, ensuring long-term performance in diverse chemical environments. This stability allows for the selection of appropriate adsorbents and desorbents based on the application requirements. High Selectivity: AB-8 demonstrates strong selectivity for organic compounds, even in the presence of inorganic salts. This makes it ideal for purifying complex mixtures where contamination from inorganic substances is a concern. Easy Regeneration: The resin can be regenerated using simple agents such as water, dilute acids, or low-boiling organic solvents like methanol, ethanol, or acetone. This reduces operational costs and extends the resin's lifespan. Robust Mechanical Strength: Its high mechanical strength ensures minimal degradation during repeated use, maintaining consistent performance over time. Color Observation: The milky white or light yellow color of the resin simplifies the monitoring of colored organic compounds during separation and purification processes. Applications The AB-8 resin is widely used in industries requiring efficient separation and purification of organic compounds. Some key applications include: Water Purification: The resin is effective in removing organic pollutants and impurities from water, making it suitable for water purification systems. Its high adsorption capacity ensures the removal of contaminants such as pesticides and industrial chemicals. Pharmaceutical Industry: AB-8 is used in the extraction and purification of bioactive compounds like stevioside and alkaloids. Its selectivity and stability make it a reliable tool for drug development and quality control. Food and Beverage: The resin helps in the separation of natural products, such as flavor compounds and colorants, from food matrices. It is also used in the purification of sweeteners and dietary supplements. Environmental Remediation: AB-8 can be employed to remove organic pollutants from soil and groundwater, contributing to environmental protection and remediation efforts. Chemical Processing: The resin is utilized in the separation of organic compounds from reaction mixtures, enhancing the efficiency of chemical synthesis processes. Company Background: Hebei Lijiang Biotechnology Co., Ltd. Hebei Lijiang Biotechnology Co., Ltd. is a leading manufacturer of advanced materials for purification and separation. Based in Hebei, China, the company specializes in the development and production of macroporous adsorption resins tailored to meet the needs of various industries. With a commitment to innovation and quality, Hebei Lijiang has established itself as a trusted supplier of high-performance resins worldwide. The company's expertise in polymer chemistry and material science enables it to produce resins with precise properties, such as the AB-8 resin. Hebei Lijiang's products are widely used in pharmaceuticals, environmental protection, and food processing, among other sectors. Their dedication to research and development ensures that their products remain at the forefront of technological advancements in the field. For more information about Hebei Lijiang Biotechnology Co., Ltd., visit their official website . Preparation and Regeneration Proper preparation and regeneration of the AB-8 resin are critical to maintaining its performance. Before use, the resin must be pretreated to remove any inert solvents it may contain. This involves soaking the resin in ethanol for 3–4 hours, followed by thorough washing with water until the effluent is clear. This process ensures that the resin is ready for general use. When the resin's adsorption capacity decreases or it becomes contaminated, enhanced regeneration is required. This involves treating the resin with 3–5% hydrochloric acid followed by 5% sodium hydroxide, as described in the product page . After regeneration, the resin is rinsed with water until the pH of the effluent is neutral, ensuring it is ready for reuse. Storage and Handling Precautions To ensure the longevity and effectiveness of the AB-8 resin, proper storage and handling are essential: Store the resin at temperatures between 5–40°C to prevent freezing or mold growth. If the resin loses moisture, avoid direct water injection. Instead, rehydrate it with ethanol before rinsing with water. Before loading the resin, ensure the feed solution is free of impurities to prevent contamination and "acute poisoning" of the resin. After washing, store the resin in clean water or saturated saline/ethanol for long-term preservation. Conclusion The Macroporous Adsorption Resin AB-8 is a versatile and high-performance material that excels in the separation and purification of organic compounds. Its unique combination of stability, selectivity, and ease of regeneration makes it an indispensable tool in industries such as pharmaceuticals, food processing, and environmental remediation. Developed by Hebei Lijiang Biotechnology Co., Ltd., this resin exemplifies the company's commitment to innovation and quality. For detailed specifications and application guidance, refer to the product page . The resin's ability to adapt to diverse conditions and its compatibility with various regeneration methods ensure its continued relevance in modern industrial processes. References For further information on materials science and adsorption technologies, refer to the National Institute of Standards and Technology (NIST) . NIST provides critical standards and research that support advancements in material science and engineering, including the development of adsorption resins and related technologies. Keywords: macroporous adsorption resin , water purification resin , anion chromatography resin