Dow Water & Process Solutions

Trace Metals Management

DOWEX™ resins play key roles in a number of metals management applications including uranium mining, zinc mining, cobalt refining, chromium plating, chromate, radium, and boron removal from groundwater and radioactive groundwater remediation. In addition to trace metals management, DOWEX resins are used extensively in control of problem ions such as nitrate and perchlorate. Dow continues to be extremely active in development efforts for new methods for primary metal separations in gold, copper, and nickel mining to ensure new resins and innovative processing technologies will be available for the hydrometallurgical processing industry in the coming years.

DOWEX ion exchange resins work just as well in non-aqueous organic streams as they do in water-based systems. Many Dow customers successfully use DOWEX ion exchange resins for removal of acids and metal salts from organic solvents in applications such as color control (shelf-life improvement) and precious metal catalyst recovery.

DOWEX Ion Exchange Products for Trace Metals Management

For metal-specific product selection, visit our Products by Application and Type via Periodic Table of Elements.

DOWEX Resins

Product	Description	Type	Matrix	Total Exchange Capacity* eq/l (kgr/ft3)	Available Forms
DOWEX G-26 (H)	Uniform particle size strong acid cation exchange resin for specialty demineralization and catalyst applications.	Strong Acid Cation	Styrene-DVB, Gel	2.0	H+
DOWEX MAC-3	A macroporous weak acid cation exchange resin used for water softening, dealkalization, and demineralization applications.	Weak Acid Cation	Polyacrylic, Macroporous	3.8 (83.0)	H+
DOWEX 21K XLT	Uniform particle size, high capacity, strong base anion exchange resin for mineral processing applications.	Type I Strong Base Anion	Styrene-DVB, Gel	1.4	Cl-
DOWEX 21K 16/20	High efficiency, strong base anion exchange resin for mineral processing applications.	Type I Strong Base Anion	Styrene-DVB, Gel	1.2	Cl-
DOWEX 21K 16/30	High efficiency, strong base anion exchange resin for mineral processing applications.	Type I Strong Base Anion	Styrene-DVB, Gel	1.2	Cl-
DOWEX RPU	Physically tough, high capacity strong base anion exchange resin in the Cl- form for uranium recovery in high silica leachates.	Type I Strong Base Anion	Styrene-DVB, Gel	1.4 (30.6)	Cl-
XZ 91419.00†	A large bead, gold selective strong base anion exchange resin for the recovery of gold from cyanidation leach solutions (manufactured under license from MINTEK)	t-Butylamine	Styrene-DVB, Gel	0.23 - 0.33 eq/L	Cl-
DOWEX M-43	Corrosion control with DOWEX M-43 ion exchange resin.	Weak Base Anion	Styrene-DVB, Macroporous	1.55	FB (Free Base) form
DOWEX M4195	Chelating resin for copper, nickel, and cobalt processing.	Chelating Resin	Styrene-DVB, Macroporous		Bis-Picolylamine
DOWEX Retardion 11A8 50 - 100 mesh	Amphoteric resin containing both weak acid cation and strong base anion functionality within the same resin.	Amphoteric resin	Styrene-DVB, Gel	1.1 meq/mL (24.1 kgr/ft3) 1.2 meq/ml (26.3 (kgr/ft3)	-COOH and -N(CH3)3
DOWEX RSC	Highly selective for removal of radium and barium from water.	Barium Doped	Styrene-DVB, Gel	.65 meq/mL	H+

** Notice: For products that are "developmental", i.e. have an EB, XUS, XY or XZ number: (1) quality specifications may not be fully determined; (2) hazards may not be fully known, and additional caution in handling and use is required; and (3) Seller reserves the right to change specifications and/or discontinue its sale. Users are cautioned to confirm opinions, findings and data by their tests and to satisfy themselves as to the suitability of such products for the purposes intended prior to use.