Specification :

D72 Macroporous Strong Acid Cation Exchange Resin
1. Description
This product, with macroporous structure, can exchange and adsorb big-sized ions and molecules, and provided with better physical and chemical stability. It has strong capabilities of permeation resistance, abrasion resistance, oxidation resistance and so on. It can be used in non-aqueous medium.

2.Typical Physical and Chemical Properties:
` Matrix Styrene-divinylbenzene
aAppearance Light brown opaque spherical particle
bFunctional group -SO3H
cTotal exchange capacity ( mmol/ g) ( dry)  e4.4
dTotal exchange capacity ( mmol/ ml) ( wet)  e1.4
eParticle size range ( % ) ( 0.315-1.25mm)  e95
fWater retention ( % )  45 - 55
gTrue wet density ( g/ ml)  1.20 - 1.30
hApparent wet density g/ ml  0.70 - 0.80
iPhysical strength ( % )  e90
~ Total reversible swelling %  Na ’ H 9 - 10
 Ionic form as shipped Na+

3.Suggested Operating Condition
` Maximum Temperature Na+ Form 120° C ( 248oF) max.
H+ Form 100° C ( 212oF) max.
aBackwash Rate 25 to 50% Bed Expansion
bRegenerant Concentration Hydrogen Cycle 3% HCl or 2 to 3% H2SO4
Sodium Cycle 6% to 8% NaCl or 3% NaOH

cRegenerant dosage HC1 or H2SO4 HC1 or H2SO4 volume: resin volume = 3: 1
NaCl volume: resin volume = 2: 1
NaOH volume: resin volume = 3: 1
dRegenerant Flow Rate 2 to 4 BV/ h
eRegenerant contact Time At least 40 minutes
fService Flow Rate 10-25m/ h
4.Applications
It is used for water treatment in high flow mixed bed system, catalysis of organic reactions and so on.