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

Product Details

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()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

Typical Physical and Chemical Properties:

ItemsSpecification
Polymer Matrix StructureCrosslinked Polystyrene Divinylbenzene
Physical Form and AppearanceSpherical beads
Functional Groups[-N(CH3)3OH]  
Ionic Form ,as shippedCL-
Total Capacity, CL- form, wet, volumetric≥1.4eq/l min
Moisture Retention, CL- form42-48%
Particle Size Range0.3mm-1.2mm
<0.3mm (max.)1% 
Uniformity Coefficient (max.)1.6
effective size0.4-0.7mm
Reversible Swelling   CL-→ OH –(max.)18-25%
Shipping Weight (approx.)670 -730g/l
Specific Gravity, moist CL- Form1.09
pH Range, Stability0 - 14

Suggested Operating Condition

Maximum Temperature  OH- Form60 °C (140°F) max.
CL- Form80 °C (176°F) max
Backwash Rate50 to 75% Bed Expansion
Regenerant Concentration2-4% NaOH
Regenerant dosageNaOHNaOHvolume:resin volume =3:1
Regenerant Flow Rate2 to 4 BV/h
Regenerant contact TimeAt least 40 minutes
Service Flow Rate10-25m/h

Applications

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.

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