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Rentech Sponsors NASCAR’s First Green Mission Team

LOS ANGELES--Rentech, Inc. (NYSE AMEX: RTK) today announced it is sponsoring Get Green Racing, the first green mission NASCAR team. By sponsoring NASCAR’s first green mission racing team, Rentech can reach NASCAR’s broad audience of over 75 million fans to encourage positive environmental change on a large scale.

“It is an opportunity to reach a broad audience to support the need for developing renewable synthetic fuels that decrease our dependence on foreign supply and are more environmentally friendly.”

Rentech is a nationally recognized leader in the development of clean energy technologies. The Company strives to deliver solutions to customers and licensees to effectively address national energy security issues, rising long-term demand for fuels and electric power and limited domestic petroleum refining capacity while lowering emissions profiles.

“Rentech is excited to be a part of the first green mission NASCAR team to encourage consumers and businesses to be more environmentally aware in their choices,�?? stated Rick Penning, Executive Vice President of Technology and Commercial Affairs. “It is an opportunity to reach a broad audience to support the need for developing renewable synthetic fuels that decrease our dependence on foreign supply and are more environmentally friendly.�??

“Developing synthetic fuels that have a near zero carbon footprint, are made from waste materials and can be used in existing engines without modifications is a great step forward and Get Green Racing is excited to have a partner like Rentech who is a leader in this field,�?? said Frank Cicci, Get Green Racing owner.

As part of its sponsorship with Get Green Racing, hauling vehicles for select NASCAR Get Green Racing events will use Rentech’s synthetic RenDiesel®. RenDiesel® meets ASTM D-975 fuel specifications, can be used as a neat fuel and burns cleaner than traditional diesel fuel.

Rentech is developing the country’s first renewable synthetic fuels and base-load renewable power facility from green waste in Rialto, California. Rentech has contracted to supply renewable RenDiesel® from this facility to eight airlines for ground service equipment operations at Los Angeles International Airport when the facility is expected to be operational in late 2012. These airlines include Alaska Airlines, American Airlines, Continental Airlines, Delta Air Lines, Southwest Airlines, United Airlines, UPS Airlines and US Airways.

Please visit www.rentechinc.com for more information on Rentech’s clean energy technologies and projects and www.getgreenracing.com for information on NASCAR Get Green Racing.

About Rentech, Inc.

Rentech, Inc. (www.rentechinc.com), incorporated in 1981, provides clean energy solutions. The Company’s Rentech-SilvaGas biomass gasification process can convert multiple biomass feedstocks into synthesis gas (syngas) for production of renewable fuels and power. Combining the gasification process with Rentech’s unique application of proven syngas conditioning and clean-up technology and the patented Rentech Process based on Fischer-Tropsch chemistry, Rentech offers an integrated solution for production of synthetic fuels from biomass. The Rentech Process can also convert syngas from fossil resources into ultra-clean synthetic jet and diesel fuels, specialty waxes and chemicals. Final product upgrading is provided under an alliance with UOP, a Honeywell company. Rentech develops projects and licenses these technologies for application in synthetic fuels and power facilities worldwide. Rentech Energy Midwest Corporation, the Company’s wholly-owned subsidiary, manufactures and sells nitrogen fertilizer products including ammonia, urea ammonia nitrate, urea granule, and urea solution in the corn-belt region of the central United States. Rentech has been recognized by Biofuels Digest as one of the 50 Hottest Companies in Bio-energy and has been named as one of the Biofuels Digest Companies of the Year for its recent innovations and achievements, particularly in aviation biofuels.

About Get Green Racing

Get Green Racing is the first green mission NASCAR team to bring environmentally friendly products, services and messages to mainstream audiences. It is not about turning NASCAR green but utilizing one of the largest proven marketing platforms in the country to promote better choices, more conscious consuming and options that will be better for our homes, families, communities and planet. Get Green Racing has programs available for NASCAR’s three national series – Sprint Cup, Nationwide Series, and Camping World Truck Series. www.getgreenracing.com

Safe Harbor Statement

This press release contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995 about matters such the characteristics of the renewable fuels to be produced from Rentech’s technologies the Company's development of a proposed synthetic fuels facility in Rialto, California and the sale of fuel from the Rialto Project. These statements are based on management's current expectations and actual results may differ materially as a result of various risks and uncertainties. Other factors that could cause actual results to differ from those reflected in the forward-looking statements include the financial means of Rentech to build proposed projects, fluctuations in commodities prices including the price of oil and the materials necessary to construct projects, the impact of changing government regulations on the project permitting process and the qualification of renewable power and fuels and factors set forth in the Company's press releases and periodic public filings with the Securities and Exchange Commission, which are available via Rentech's web site at www.rentechinc.com. The forward-looking statements in this press release are made as of the date of this release, and Rentech does not undertake to revise or update these forward-looking statements, except to the extent that it is required to do so under applicable law.