DEF breaks the NOx down into harmless components of water vapor and nitrogen gas. The U.S. Environmental Protection Agency has enacted emissions standards which will become effective in 2010 that require the reduction of NOx emissions. It is anticipated that Earthpure DEF will be available in January 2010 and will be marketed under the Yara brand name Air1.

Jack E. Golsen, LSB Industries’ board chairman and chief executive officer stated, “Cherokee Nitrogen has chosen to team with Yara, combining its manufacturing expertise and U.S. based production with Yara’s global experience in the DEF markets. We are pleased to announce our entry into this new value-added business which expands our presence in the industrial sector with this high purity urea solution. Yara’s experience in the DEF market in Europe, Asia and Australia should prove invaluable in establishing and building the market for Cherokee Nitrogen’s product in the U.S. Earthpure DEF™ is a natural extension of our other environmentally beneficial products. Our Chemical Business also produces NOx abatement chemicals for power plants, and our Climate Control Business produces a wide range of energy efficient and environmentally friendly heating and cooling products, including geothermal heat pumps.”

LSB Industries is a US-based diversified holding company.

Yara is a supplier of mineral fertilizers.