Macroporous Weakly Basic
Acrylic-based Anion Exchange Resin


D311, aka 703 is a macroporous weakly basic acrylic-based anion exchange resin. With its uniform and solid structure and low swelling rate after ionic state transition, it performs with strong resistance to osmotic shock. And organic macromolecules are easy to be released due to its good adsorption properties. Therefore it is widely applied to demineralization system to protect strongly basic anion exchange resin from being polluted by organics and also generally used in sugar refining and de-colorization.

Matrix: Methl acrylate -divinylbenzene
Functional groups: -N(CH3)C2H4R
Physical form: Opalescent to yellowish
opaque spherical beads
Moisture holding capacity(%): 48 to 58%
Ionic form as shipped: Free Amine(FA) form
Total mass exchange capacity: ≥6.5 mmol/g
Total bulk exchange capacity: ≥2.0mmol/mL
Moisture true density: 1.10~1.16g/mL
Moisture bulk density: 0.65~0.75g/mL
Effective particle size: 0.40~0.70mm
Particle size: 0.315~1.25mm
Uniformity coefficient: ≤1.6
Integrated beads ratio after grinding test: ≥90℅
Max swelling rate of resin after ionic state transition: OH ->Cl: 15%
Maximum operating temperature: 40°C
Minimum bed depth: 800mm
Service flow rate: 5~40 BV*/h
Maximum service velocity: 60 m/h
Regenerant: NaOH Na2CO3   NH3H2O
Level(Counted by100%): 70-160g/L 100-210g/L 60~140g/L
Concentration: 2~4℅ 4~8℅2~4℅
Flow rate: 2~8 BV*/h 2~8 BV*/h2~8 BV*/h
Minimum contact time: 30min
Slow rinse: 2 BV at regeneration flow rate
Fast rinse: 4~8 BV at service flow rate
*1 BV(Bed Volume)= 1 solution per resin