Dow Water & Process Solutions

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).