XND-932 macroporous weakly basic anion exchange resin

XND-932 macroporous weakly basic anion exchange resinApplication areas: (C21H39N7O12) 3H2SO42, separation of aldehydes (containing impurities such as ortho nitrotoluene, ortho nitrobromobenzyl, ortho nitrodibromobenzyl, ortho nitrobenzyl alcohol, etc.), adsorption with XND-932 resin, addition of regeneration solution, addition of homogeneous water, evaporation of ethanol, cooling of the residue, extraction with petroleum ether at 60-90 ℃, and decolorization with activated carbon. Used for pre-treatment in food and pharmaceutical processing:

1. The new resin after column installation must undergo pre-treatment before use to remove oligomers, organic matter, and harmful ions contained in the resin.

2. Soak the resin in water for one day and night, then perform backwashing and washing until the water is clear and bright.

3. Then alternate treatment with 4% HC1 and 2% NaOH at 2-3 times the volume of the resin, and rinse with water between acid-base treatments; Alternating treatment with 'acid water alkali water' as one cycle, treating at least three cycles. After pre-treatment and regeneration treatment, it can be put into use.

4. Resin should be maintained in a wet state during transportation and storage. Dehydrated and dried resin should not be directly immersed in water. It should be immersed in a 10% NaCl solution first, fully expanded, and gradually diluted before pre-treatment according to the above procedure. (1) Adsorption flow rate: 1BV/h (2) Rinsing solution: 5BV 95% ethanol (3) Regeneration solution: 7BV 1.5-2.0mol hydrochloric acid ethanol solution (4) Regeneration solution flow rate: 1-3BV/h (5) Rinsing: 4-5BV clean or soft water (6) Rinsing solution flow rate: 2-10BV/h (7) Transformation: 2% NaOH 258) Transformation rate.

XND-932 macroporous weakly basic anion exchange resinProduct images