DOWEX™ M-31

Standard grade product for general catalytic applications. This catalyst has unmatched durability and dependability within the MTBE/TAME industry.

Product Name Type Matrix Functional Group
DOWEX M-31 Strong Acid Cation Styrene-DVB, Macroporous Sulfonic Acid


Typical Physical and Chemical Properties Units H+ Form
Physical Form Hard opaque beads
Typical Surface Area m2/g 30
Average Pore Diameter Angstroms 220
Pore Volume % 33
Water Retention Capacity % 50 - 54 by wt.
Whole Beads % 99 min.
Particle Size Distribution
     On 16 mesh % 2.0 max.
     % through 40 mesh % 5 max.
Shipping Weight** kg/m3 760
Shipping Weight** lbs/ft3 47
Friablity avg. g/bead 350
Wet Volume Acid Capacity meq/mL, min. 1.7
Dry Weight Acid Capacity meq/mg, min. 4.7



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




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