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D301 Macroporous Styrene Series Weakly Alkaline Anion Exchange Resin


This is a kind of anion exchange resin which has tertiary amine groups in styrene-divinylbenzene copolymer. It can remove effectively organic coloring matters, inorganic acids and silicates from acidic and nearly neutral medium, with its weak alkalinity. It also can adsorb the big-sized impurities and be used in non-aqueous solution. This resin has good properties, such as highly-efficient regeneration capability, large exchange capacity, strong contamination resistance, excellent physical strength etc.

2.Typical Physical and Chemical Properties

Items Specification
Polymer Matrix Structure Crosslinked Polystyrene Divinylbenzene
Physical Form and Appearance Ivory opaque spherical particle
Functional Groups R-N(CH₃)2
Ionic Form ,as shipped Free Base
Total Capacity, FB form, wet, volumetric ≥1.45eq/l min
Moisture Retention, FB form 50-60%
Particle Size Range 0.3mm-1.2mm
< 0.3mm (max.) 1%
Uniformity Coefficient (max.) 1.6
effective size 0.4-0.7mm
Reversible Swelling CL-→ OH–(max.) 20-28%
Shipping Weight (approx.) 650 -720g/l

Specific Gravity, moist  FB  Form

pH Range, Stability 1-9

3.Suggested Operating Condition

Maximum Temperature:Free Base From 100°C (212°F) max.
Backwash Rate 50 to 75% Bed Expansion
Regenerant Concentration 2-4% NaOH
Regenerant dosage NaOH NaOh volume:resin volume = 3:1
Regenerant Flow Rate 2 to 4 BV/h
Regenerant contact Time At least 40 minutes
Service Flow Rate 10-25m/h


It is mainly used in purification, ash removal and decolorization of sugar solution, decolorization of xylose, desalination and decolorization of starch sugar and water treatment industry. When being used in industrial water treatment, it can be used for manufacturing the pure water and high purity water, electroplating the chromium from wastewater etc.

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