New Alco Chemical Selection Guide Provides Details on Industrial Biocides for Water Treatment


CHATTANOOGA, TN, December 17, 2007 - A new selection guide from Alco Chemical
delivers concise information on the company's full range of dithiocarbamates
for microbial control in water treatment applications.

Designed for specific applications such as pulp and paper mills, sugar
processing, cooling towers, air washers, and oil production/storage, the
AQUATREAT® products presented in this guide perform for a broad range of
bacteria, fungi and algae. The selection guide covers single- and dual-
component AQUATREAT additives, with information on composition and use
patterns.

For a free copy of the "Water Treatment Selection Guide: Industrial
Biocides," contact Alco Chemical, 909 Mueller Drive, Chattanooga, TN 37406,
Tel. 1-800-251-1080 or 1-423-629-1405, fax 1-423-698-8723, e-mail:
alco.chemical@nstarch.com.

Alco Chemical is a leading manufacturer of specialty polymers used in water
treatment, detergents, paper and adhesives. Alco Chemical is a unit of
National Starch and Chemical Company, a worldwide manufacturer of specialty
polymers, natural polymers, adhesives and electronic materials, with 2006
sales of $3.7 billion. National Starch is headquartered in Bridgewater, N.J.,
and is a member of the ICI Group.

For more information about Alco Chemical, visit www.alcochemical.com. For more
information about National Starch and Chemical Company, visit
www.nationalstarch.com.

National Starch and Chemical Company is dedicated to meeting the needs and
expectations of customers without compromising its commitment to
sustainability. National Starch supports sustainability through its continuous
efforts to improve the safety, health and environment of the communities in
which it operates. For detailed information on National Starch's
sustainability program, visit www.nationalstarch.com.

High-resolution photograph available. Please Contact Dave Manion.

Editorial Contacts:
Dave Manion
908-685-5395
dave.manion@nstarch.com

Martin Torbert
908-685-5185
martin.torbert@nstarch.com

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