Common Contracts

15,000,000 Common Units Representing Limited Partner Interests RENTECH NITROGEN PARTNERS, L.P. UNDERWRITING AGREEMENT

Rentech Nitrogen Partners, L.P. • November 9th, 2011 • Agricultural chemicals • New York

• Company
  Rentech Nitrogen Partners, L.P.
• Filed
  November 9th, 2011
• Industry
  Agricultural chemicals
• Jurisdiction
  New York

Common Units Representing Limited Partner Interests RENTECH NITROGEN PARTNERS, L.P. FORM OF UNDERWRITING AGREEMENT

Rentech Nitrogen Partners, L.P. • October 20th, 2011 • Agricultural chemicals • New York

• Company
  Rentech Nitrogen Partners, L.P.
• Filed
  October 20th, 2011
• Industry
  Agricultural chemicals
• Jurisdiction
  New York

The undersigned understands that Morgan Stanley & Co. LLC (“Morgan Stanley”) and Credit Suisse Securities (USA) LLC (“Credit Suisse” and, together with Morgan Stanley, the “Managers”) propose to enter into an Underwriting Agreement (the “Underwriting Agreement”) with Rentech Nitrogen Partners, L.P., a Delaware limited partnership (the “Partnership”), Rentech Nitrogen GP, LLC, a Delaware limited liability company and the general partner of the Partnership (the “General Partner”), Rentech Development Corporation, a Colorado corporation (“RDC”), and certain other affiliates of the Partnership (collectively with the Partnership, the General Partner and RDC, the “Rentech Parties”), providing for the public offering (the “Public Offering”) by the several Underwriters, including the Managers (the “Underwriters”), of common units (the “LP Units”) representing limited partner interests in the Partnership (the “Common Units”).