DOWEX™ MARATHON™ A2

An efficient, uniform particle size, high capacity, Type II strong base anion exchange resin for demineralization applications.

Product Name Type Matrix Functional Group
DOWEX MARATHON A2 Type II Strong Base Anion Styrene-DVB, Gel Dimethylethanol Amine


Guaranteed Sales Specification Units Cl- Form
Total Exchange Capacity, min. eq/L 1.2
Total Exchange Capacity, min. kgr/ft3 as CaCO3 26.2
Water Retention Capacity % 45 - 54
Uniformity Coefficient 1.1 max.


Typical Physical and Chemical Properties Units Cl- Form
Whole Uncracked Beads % 95 - 100
Mean Particle Size μm 570 ± 50
Total Swelling (Cl- → OH-) % 15
Particle Density g/mL 1.09
Shipping Weight** g/L 690
Shipping Weight** lbs/ft3 43



** As per the backwashed and settled density of the resin, determined by ASTM D-2187.


For additional particle size information, please refer to the Particle Size Distribution Cross Reference Chart (40KB PDF).



®™* Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow