Terra Nitrogen Company, L.P. (TNCLP) (NYSE: TNH) today announced the declaration of a cash distribution for the quarter ended December 31, 2012, of $3.63 per common limited partnership unit. The distribution is payable February 28, 2013, to holders of record as of February 19, 2013. TNCLP expects to report its fourth quarter and full year 2012 results on Tuesday, February 19, 2013, after the market closes. Cash distributions depend on TNCLP’s earnings, which can be affected by nitrogen fertilizer selling prices, natural gas costs, seasonal demand factors, production levels and weather, as well as cash requirements for working capital needs and capital expenditures. Cash distributions per limited partnership unit also vary based on increasing amounts allocable to the General Partner when cumulative distributions exceed targeted levels. With this distribution, TNCLP cumulative distributions continue to exceed targeted levels. This release serves as a qualified notice to nominees and brokers as provided for under Treasury Regulation Section 1.1446-4(b). Please note that 100 percent of the Partnership's distributions to foreign investors are attributable to income that is effectively connected with a United States trade or business. Accordingly, the Partnership's distributions to foreign investors are subject to federal income tax withholding at the highest effective tax rate. About TNCLP Terra Nitrogen Company, L.P. is a leading manufacturer of nitrogen fertilizer products. TNCLP is the sole limited partner of Terra Nitrogen, Limited Partnership (TNLP), owner of the Verdigris, Oklahoma, manufacturing facility and related assets. Terra Nitrogen GP Inc., an indirect, wholly-owned subsidiary of CF Industries Holdings, Inc., is the General Partner of TNCLP and exercises full control over all of TNCLP’s business affairs. Terra Nitrogen Company, L.P. news announcements are also available on CF Industries’ Web site, www.cfindustries.com .