Durable Membranes Offer High Permselectivity for Industrial ProcessesSybron Chemicals Inc. manufactures IONAC

brand heterogenous ion exchange membraneswith strong acid cationic and strong base anionic functionality.

These membranes, with their strongly ionizedfunctionality yield high permselectivity forindustrial processes. The combination of a verystrong fabric base and a chemically stablebinder yields a very tough membrane. Theirhigh Mullen Burst Strength ratings will notdegrade within their normal operating tempera-ture range.

Ion exchange membranes are used in a variety of

processing and waste treatment applicationsthat include:n Production of Periodic acidn Recovery of metals from electroplating and

metal finishing bathsn Recovery of pickle liquorsn Electrocoating for both anionic and cationic

systems.

IONAC ion exchange membranes come in two precut sheet sizes. In

addition, our MA-7500 membrane comes instandard-size rolls 43 or 45 inches wide, inlengths up to 30 meters (see table below). The3400 series membranes are available as a spe-cial order in sheet sizes up to 65 inches wide by144 inches long.

IONAC ion exchange membranes are furnisheddry for ease of storage. The membranes shouldbe stored in the shipping canister provided bySybron Chemicals Inc., in a dry environment.They should be presoaked before use, followingthe instructions in the membrane preparationsection, to obtain dimensional swelling.

PhysicalCharacteristics

Applications

IONACIon Exchange Membranes

Membrane Sizes

MA-3475L / MC-3470L 1.09 x 3.1 meters(43 x 122 inches)

MA-3475S / MC-3470S 0.84 x 2.5 meters(33 x 98 inches)

MA-7500 (roll) 1.09 meters wide(43 inches wide)

1.14 meters wide(45 inches wide)

The data included herein are based on test information obtained by Sybron Chemicals Inc. These data are believed to be reliable but do not imply any warranty or performance guarantee.We recommend that the user determine performance by testing on his own processing equipment. We assume no liability or responsibility for patent infringement resulting from the use of this product.

IONAC is a registered trademark of Sybron Chemicals Inc. 1999 Sybron Chemicals Inc. All rights reserved. Membranes (WD) XM 10/99

Birmingham Road PO Box 66 Birmingham, New Jersey 08011-9900(609) 893-1100 (800) 678-0020 FAX (609) 894-8641 www.ionexchange.com

C H E M I C A L S I N C .

IONACIon Exchange Membranes

Technical Data

Membrane Type: Cation Anion AnionMC-3470 MC-3475 MA-7500

Width Up to 1.65 meter Up to 1.65 meter 1.08 meter or 1.14 meterUp to 65 inches Up to 65 inches 43 inches or 45 inches

Length Up to 3.66 meters Up to 3.66 meters Up to 30 metersUp to 144 inches Up to 144 inches Up to 98.4 feet

Thickness (mils) 15 16 18

Total Exchange Capacity(meq/gm) 1.4 0.9 1.1

Mullen Burst Test strength, min.(psi) 150 150 150(bar) 10.3 10.3 10.3

Area Resistance (/cm2)0.1 N NaCl 25 50 301.0 N NaCl 10 25 10

Permselectivity0.5 N NaCl / 1.0 N NaCl 96 99 99

Water Permeability(ml/hr/ft2/psi) 25 20 50

Temperature Stability, max. 80C (176F) 80C (176F) 80C (176F)

Chemical Stability (pH range) 1 to 10 1 to 10 1 to 10

Current Density, max.(ampere/ft2) 50 50 50

Ionic form, as shipped Sodium Chloride Chloride

Typical Membrane Characteristics

Membranes should be prepared for service by following either method listed below. By doing so, you will help ensure a long useful life for your membrane material.

Method A: The membranes should be completely immersed in a solution that is typical in composition to theliquid contacting the membrane in the system. It is preferable that this liquid be at a temperature of up to butnot exceeding 55C to expedite equilibrium. Allow a contact time of 3 hours to ensure complete swelling.

Method B: As an alternative to equilibrating in the application liquor, the membrane can be soaked in awater or brine solution under the same temperature and time conditions as stated above.

Membrane Preparation