Dow Water & Process Solutions

DOWEX™ MARATHON™ WBA-2

Uniform particle size, high capacity, weak base anion exchange resin for water demineralization applications.

Product Name	Type	Matrix	Functional Group
DOWEX MARATHON WBA-2	Weak Base Anion	Styrene-DVB, Macroporous	Tertiary Amine

Guaranteed Sales Specification	Units	FB(Free Base) Form
Total Exchange Capacity, min.	eq/L	1.7
Total Exchange Capacity, min.	kgr/ft3 as CaCO3	37.1
Water Retention Capacity	%	40 - 51
Uniformity Coefficient		1.1 max.

Typical Physical and Chemical Properties	Units	FB(Free Base) Form
Whole Beads	%	95 - 100
Mean Particle Size	μm	550 ± 50
Total Swelling (FB → HCl), approx.	%	25
Particle Density	g/mL	1.04
Shipping Weight**	g/L	640
Shipping Weight**	lbs/ft3	40

** 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).