201×7 Strong-Base Type I (Gel) Anion Exchange Resins

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Product Line Description

201×7 (717) is a clear gel Type 1 strong-base anion exchanger with both high operating capacity and the ability to achieve low residual silica levels. It has a clear gel structure, showing excellent regeneration efficiency and rinse characteristics. 201×7 (717) has exceptional physical stability for a conventional gel-type resin which permits a long life without the development of excessive pressure drop; it also shows good kinetics of exchange, enabling very low concentration levels of both strong and weak anions to be achieved at practical flowrates.It is mainly used in pure water and high purity water manufacturing, extraction and decolorization of biochemical products, wastewater treatment, separation of organics, extraction of radioelements, extracting the tungsten and molybdenum in hydrometallurgy etc.

Brands HUAMO
Typical Physical and Chemical Properties
Polymer Matrix Structure Crosslinked Polystyrene Divinylbenzene
Physical Form and Appearance Spherical Beads
Functional Groups -N(CH3)3OH
Ionic Form (As Shipped) CL
Chlorine (CL) Form, Wet, Volumetric Total Capacity ≥ 1.4 eq/l min
Chlorine (CL) Form Moisture Retention 42 to 48 %
Particle Size Range 0.3 to 1.2 mm
Maximum Percentage (%) for < 0.3 Millimeter (mm) Particle Size 1 %
Maximum Uniformity Coefficient 1.6
Effective Size 0.4 to 0.7 mm
Maximum Reversible Swelling Chlorine (CL) → Hydroxide (OH) 18 to 25 %
Approximate Shipping Weight 670 to 730 g/L
Moist Chlorine (CL) Form Specific Gravity 1.09
Potential of Hydrogen (pH) Stability Range 0 to 14 pH
Suggested Operating Condition
Hydroxide (OH) Form Maximum Temperature 60 ºC
140 ºF
Chlorine (CL) Form Maximum Temperature 80 ºC
176 ºF
Backwash Rate (Bed Expansion) 50 to 75 %
Regenerant Concentration (Sodium Hydroxide (NaOH)) 2 to 4 %
Regenerant Dosage (Sodium Hydroxide (NaOH)) Sodium Hydroxide (NaOH) Volume:Resin Volume = 3:1
Regenerant Flow Rate 2 to 4 BV/h
Regenerant Contact Time At Least 40 min
Service Flow Rate 10 to 25 mph