PRODUCT INFORMATION

LEWATIT® A 8071

Lewatit® A 8071 is a strongly basic, gelular anion exchange resin (type I) based on an acryl-divinylbenzene
copolymer of special bead size distribution.

Due to its acrylic structure Lewatit® A 8071 stands for effective adsorption and desorption of naturally occuring
organic substances. Its very high total capacity and outstanding mechanical stability together with the excellent
resistance to osmotic shock makes it unique for all demineralization applications especially if a low silica
leakage is required.

Lewatit® A 8071 is especially suitable for:

• Demineralizing water later used for industrial steam generation operated with co- or counter-current systems
such as Lewatit® Liftbed System or Lewatit® Rinsebed System
• The removal of organic matter, especially from surface water
• The extension of life time of acid baths in the finishing industry (acid retardation process)

The special properties of this product can only be fully utilized if the technology and process used correspond to
the current state-of-the-art. Further advice in this matter can be obtained from Lanxess Corporation.

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Common Description
Delivery form Cl-
Functional group quaternary ammonium, type 1
Matrix acrylic
Structure gel
Appearance ivory, opaque

Specified Data
US Units
Uniformity coefficient max. 1.8
Effective size d10 mm 0.50 - 0.75
Total capacity (delivery form) kgr/ft3 29 min. eq/L 1.35

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Typical Physical and Chemical Properties

US Units Metric Units
Bulk density for shipment (+/- 5%) lb/ft3 46 g/L 740
Density approx. g/mL 1.09
Water retention (delivery form) approx. weight % 48-55
Volume change (Cl -OH )
- -
max. approx. % 25
Stability pH range 0-14
Storage time (after delivery) max. years 2
Storability temperature range °C -20 - +40

Operation
US Units Metric Units
Operating temperature max. °F 95 max. °C 35
Operating pH range during exhaustion 0-12
Bed depth for single column min. inches 31 min. mm 800
Back wash bed expansion per % 10
m/h (20°C)
Specific pressure loss (15°C) kPa*h/m2 1.1
Max. pressure loss during PSI 22 kPa 150
operation
Specific flow rate max. gpm/ft3 8 max. BV/h 60

Regeneration
US Units Metric Units
NaOH regeneration concentration approx. wt. % approx. wt. % 2-6
NaOH regeneration quantity co-current min. lb/ft3
5.0 min. g/L resin 80
NaOH regeneration quantity counter- min. lb/ft3 2.5 min. g/L resin 40
current
Regeneration contact time min. minutes min. minutes 20
Slow rinse at regeneration flow min. gal/ft 3
15 min. BV 2
rate
Fast rinse at service flow rate min. gal/ft3 15 min. BV 4

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Additional Information & Regulations

PRODUCT SAFETY INFORMATION REQUIRED FOR SAFE USE OF PRODUCTS MENTIONED HEREIN IS
NOT INCLUDED IN THIS DOCUMENT. BEFORE HANDLING ANY PRODUCT, ALWAYS READ PRODUCT
AND SAFETY DATA SHEETS AND CONTAINER LABELS FOR SAFE USE, PHYSICAL AND HEALTH
HAZARD INFORMATION.

Safety precautions
Strong oxidants, e.g. nitric acid, can cause violent reactions if they come into contact with ion exchange resins.

Disposal
In the European Community Ion exchange resins have to be disposed, according to the European waste
nomenclature which can be accessed on the internet-site of the European Union.

Packaging
The experience has shown that the packaging stability for reliable resin containment is limited to 24 months
under the storage conditions described within the product safety information. It is therefore recommended to use
the product within this time frame; otherwise the packaging condition should be checked regularly.

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The manner in which you use and the purpose to which you put and utilize our products, LANXESS Corporation
technical assistance and information (whether verbal, written or by way of production 111 RIDC Park West Dr
12275-1112 Pittsburgh-Allegheny
evaluations), including any suggested formulations and recommendations are beyond our USA
control. Therefore, it is imperative that you test our products, technical assistance and
information to determine to your own satisfaction whether they are suitable for your +1-800-678-0020
intended uses and application. This application-specific analysis must at least include lewatit@lanxess.com
testing to determine suitability from a technical as well as health, safety, and www.lanxess.com
environmental standpoint. Such testing has not necessarily been done by us. Unless we www.lpt.lanxess.com
otherwise agree in writing, all products are sold strictly pursuant to the terms of our
standard conditions of sale. All information and technical assistance is given without
warranty or guarantee and is subject to change with notice. It is expressly understood
and agreed that you assume and hereby expressly release us from liability, in tort,
contract or otherwise, incurred in connection with the use of our products, technical
assistance, and information. Any statement or recommendation not contained herein is
unauthorized and shall not bind us. Nothing herein shall be construed as a
recommendation to use any product in conflict with patents covering any material or its
use. No license is implied or in fact granted under the claims of any patent.

Health and Safety Information: Appropriate literature has been assembled which
provides information concerning the health and safety precautions that must be observed
when handling the LANXESS Corporation products mentioned in this publication. For
materials mentioned which are not LANXESS Corporation products, appropriate industrial
hygiene and other safety precautions recommended by their manufacturers should be
followed. Before working with any of these products, you must read and become familiar
with the available information on their hazards, proper use, and handling. This cannot be
overemphasized. Information is available in several forms, e.g., safety data sheets and
product labels. Consult your LANXESS Corporation representative or contact the Product
Safety and Regulatory Affairs Department at LANXESS Corporation

Regulatory Compliance Information: Some of the end uses of the products described
in this publication must comply with applicable regulations, such as the FDA, BfR, NSF,
USDA, and CPSC. If you have any questions on the regulatory status of these products,
contact - for business in the USA - the LANXESS Corporation Regulatory Affairs and
Product Safety Department in Pittsburgh, PA, USA or for business outside US the
Regulatory Affairs and Product Safety Department of LANXESS Deutschland GmbH in
Germany.

Note: The information contained in this publication is current as of the date of edition.
Please contact LANXESS Corporation Inc. to determine if this publication has been
revised.

This document contains important information and must be read in its

entirety.

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