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Sigma-Aldrich Signs Agreement With SouthWest NanoTechnologies to Distribute SWeNT(R) Single-Wall Carbon Nanotubes

Thursday, December 4, 2008 General News J E 4
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ST. LOUIS, Dec. 3 Sigma-Aldrich (Nasdaq: SIAL)and SouthWest NanoTechnologies Inc. (SWeNT), a leading producer of single-wallcarbon nanotubes, announced today that they have signed an agreement underwhich Sigma-Aldrich will distribute SWeNT's single-wall carbon nanotubes tothe research and development community.

Under the terms of the agreement, Sigma-Aldrich will exclusivelydistribute research quantities of SWeNT(R) CG 100, SWeNT(R) SG 65 and SWeNT(R)SG 76 single-wall nanotubes globally through its Aldrich(R) division(http://www.sigma-aldrich.com/nanocarbon). SWeNT will continue to work closelywith industry partners to deliver commercial quantities of the materials andfocus on commercial application development and large-scale production.

Single-wall carbon nanotubes consist of a hollow cylinder of carbon with adiameter equal to approximately one nanometer -- a billionth of a meter. Dueto their unusual structure, single-wall nanotubes exhibit extraordinaryoptical and electronic properties, tremendous strength and flexibility, andhigh thermal and chemical stability. These remarkable properties make themsuitable for a wide range of applications in the automotive, aeronautics,electronics, displays, energy and healthcare markets.

"There are significant global market opportunities for single-wall carbonnanotubes, and Sigma-Aldrich has a world-class distribution network. Thisagreement will provide the best possible products and service to the researchand development community, which is incorporating SWeNT carbon nanotubes intoinnovative, emerging technologies," said SWeNT CEO David Arthur. "In our roleas a leading producer of high-quality single-wall nanotubes, we are committedto being an innovative partner in Sigma-Aldrich's continued development andcreative applications. This agreement is key to reaching that goal."

Ilya Koltover, business development manager, Aldrich Chemistry andMaterials Science, added: "Progress in nanotechnology research depends on areliable supply of consistently high-quality nanomaterials, supported bythorough characterization and technical information. This is especially truefor single wall carbon nanotubes, and we are pleased to work with SWeNT, whois committed to the goal of providing such supply. This partnership will helpresearchers and accelerate nanotechnology innovation around the world."

For more information about the single-wall carbon nanotubes, visithttp://www.sigma-aldrich.com/nanocarbon.

About Sigma-Aldrich: Sigma-Aldrich is a leading Life Science and HighTechnology company. Its biochemical and organic chemical products and kits areused in scientific and genomic research, biotechnology, pharmaceuticaldevelopment, the diagnosis of disease and as key components in pharmaceuticaland other high technology manufacturing. Sigma-Aldrich has customers in lifescience companies, university and government institutions, hospitals, and inindustry. Over one million scientists and technologists use our products. TheCompany operates in 36 countries and has 8,000 employees providing excellentservice worldwide. Sigma-Aldrich is committed to Accelerating Customer Successthrough Leadership in Life Science, High Technology and Service. For moreinformation about Sigma-Aldrich, please visit its award-winning website athttp://www.sigma-aldrich.com.

About SouthWest NanoTechnologies: SWeNT produces three lines of carbonnanotube products using the patented CoMoCAT(R) catalytic method, widelyrecognized for its quality and scalability. The Company was founded in 2001 tocommercialize nanotube technology developed at the University of Oklahoma byDaniel Resasco, a professor of chemical engineering and world-renowned expertin the fields of single-wall carbon nanotubes and catalysis. In June 2008,SWeNT moved to its new $3.9 million, 18,000-square-foot manufacturing facilityin Norman. With approximately 10,000 square feet of 32-foot high-bayproduction space, SWeNT can produce at least 100 times more product than atits previous pilot plant location. For more information about SWeNT, visithttp://www.swentnano.com.

Cautionary Statement: This release contains forward-looking statementsrelating to future performance, goals, strategic actions and initiatives andsimilar intentions and beliefs and other statements regarding the Companies'expectations, goals, beliefs, intentions and the like, which involveassumptions regarding the Companies' operations and conditions in the marketsthe Companies serve. The Companies do not undertake any obligation to updatethese forward-looking statements.

Sigma-Aldrich and Aldrich are trademarks of Sigma-Aldrich Biotechnology LPand Sigma-Aldrich Co.

SWeNT(R) and CoMoCAT(R) are registered trademarks of SouthWestNanoTechnologies Inc.

SOURCE Sigma-Aldrich
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