Basic Info.

HS Code

3914000000

HS Code

3914000000

Product Desciption

1. 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
2.Typical Physical and Chemical Properties:

Items	Specification
Polymer Matrix Structure	Crosslinked Polystyrene Divinylbenzene
Physical Form and Appearance	Spherical beads
Functional Groups	[-N(CH3)3OH]
Ionic Form ,as shipped	CL-
Total Exchange Capacity	3.60meq/g min
Total Capacity, CL- form, wet, volumetric	≥1.35eq/l min
Moisture Retention, CL- form	42-48%
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.)	18-22%
Shipping Weight (approx.)	680 -730g/l
Specific Gravity, moist CL- Form	1.09
pH Range, Stability	0 - 14

3.Suggested Operating Condition

Maximum Temperature	OH- Form	60 °C (140oF) max.
	CL- Form	80 °C (176oF) max
Backwash Rate		50 to 75% Bed Expansion
Regenerant Concentration		2-4% NaOH
Regenerant dosage	NaOH	NaOHvolume: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

4.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