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Exhibit 25
   FORM T-1
 UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
 Washington, D.C. 20549
 STATEMENT OF ELIGIBILITY
UNDER THE TRUST INDENTURE ACT OF 1939 OF A
CORPORATION DESIGNATED TO ACT AS TRUSTEE
 o
 
 THE BANK OF NEW YORK TRUST COMPANY, N.A.
  (State of incorporation 
if not a U.S. national bank)
    
    95-3571558
(I.R.S. employer
identification no.)700 South Flower Street 
Suite 500
Los Angeles, California
(Address of principal executive offices)
    
    90017
(Zip code)
 
 Southern Natural Gas Company
  Delaware
(State or other jurisdiction of 
incorporation or organization)
    
    63-0196650
(I.R.S. employer
identification no.)El Paso Building 1001 Louisiana Street 
Houston, Texas 77002
(Address of principal executive offices)
    
    77002
(Zip Code)
 
 5.90% Notes Due 2017




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1.
    
    General information. Furnish the following information as to the trustee:(a)
    
    Name and address of each examining or supervising authority to which it is
subject.Name
    
    AddressComptroller of the Currency
United States Department of the Treasury
    
    Washington, D.C. 20219Federal Reserve Bank
    
    San Francisco, California 94105Federal Deposit Insurance Corporation
    
    Washington, D.C. 20429(b)
    
    Whether it is authorized to exercise corporate trust powers.Yes.2.
    
    Affiliations with Obligor.If the obligor is an affiliate of the trustee, describe each such affiliation.None.3-15.
    
    Not applicable.16.
    
    List of Exhibits.Exhibits identified in parentheses below, on file with the Commission, are incorporated
herein by reference as an exhibit hereto, pursuant to Rule 7a-29 under the Trust Indenture
Act of 1939 (the Act) and 17 C.F.R. 229.10(d).1.
    
    A copy of the articles of association of The Bank of New York Trust Company,
N.A. (Exhibit 1 to Form T-1 filed with Registration Statement No. 333-121948).2.
    
    A copy of certificate of authority of the trustee to commence business.
(Exhibit 2 to Form T-1 filed with Registration Statement No. 333-121948).
  - 2 -




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3.
    
    
    A copy of the authorization of the trustee to exercise corporate trust
powers. (Exhibit 3 to Form T-1 filed with Registration Statement No. 333-121948).4. A
copy of the existing by-laws of the trustee. (Exhibit 4 to Form T-1 filed with
Registration Statement No. 333-121948).6.
    
    
    The consent of the trustee required by
Section 321(b) of the Act.
(Exhibit 6 to Form T-1 filed with Registration Statement No. 333-121948).7.
    
    
    A copy of the latest report of condition of the Trustee published pursuant to
law or to the requirements of its supervising or examining authority.
   THE BANK OF NEW YORK TRUSTCOMPANY, N.A.By:

/s/
Brian EchausseName:
    Brian EchausseTitle:
    Assistant Treasurer - 3 -




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EXHIBIT 7
 NOTICE
 REPORT OF CONDITION
  THE BANK OF NEW YORK TRUST COMPANY, NA
in the state of CA at close of business on June 30, 2007
 Statement of Resources and Liabilities
 Dollar Amounts in ThousandsASSETSCash and balances due from depository institutions:Noninterest-bearing balances and currency and coins
    
    
    9,835Interest-bearing balances
    
    
    0Securities:Held-to-maturity securities
    
    
    42Available-for-sale securities
    
    
    114,959Federal funds sold and securities purchased under agreements to resell:Federal funds sold
    
    
    50,000Securities purchased under agreements to resell
    
    
    89,000Loans and lease financing receivables:Loans and leases held for sale
    
    
    0Loans and leases, net of unearned income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0LESS: Allowance for loan and lease losses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0Loans and leases, net of unearned income and allowance
    
    
    0Trading Assets
    
    
    0Premises and fixed assets (including capitalized leases)
    
    
    12,013Other real estate owned
    
    
    0Investments in unconsolidated subsidiaries and associated companies
    
    
    0Intangible assets:Goodwill
    
    
    923,997Other intangible assets
    
    
    262,780Other assets
    
    
    142,822Total assets
    
    
    1,605,448




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REPORT OF CONDITION (Continued)
 Dollar Amounts in ThousandsLIABILITIESDeposits:In domestic offices
    
    
    2,255Noninterest-bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,255Interest-bearing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0Federal funds purchased and securities sold under agreements to repurchase:Federal funds purchased
    
    
    0Securities sold under agreements to repurchase
    
    
    0Trading liabilities
    
    
    0Other borrowed money (includes mortgage indebtedness and obligations
under capitalized leases
    
    
    143,691Subordinated notes and debentures
    
    
    0Other liabilities
    
    
    165,588Total liabilities
    
    
    311,534Minority interest in consolidated subsidiaries
    
    
    0EQUITY CAPITALPerpetual preferred stock and related surplus
    
    
    0Common Stock
    
    
    1,000Surplus (exclude all surplus related to preferred stock)
    
    
    1,121,520Retained earnings
    
    
    171,493Accumulated other comprehensive income
    
    
    (99
    )Other equity capital components
    
    
    0Total equity capital
    
    
    1,293,914Total liabilities, minority interest, and equity capital
    
    
    1,605,448
 I, Karen Bayz, Vice President      /s/ Karen Bayz(Name, Title)
 of the above named bank do hereby declare that this Report of
Condition is true and correct to the best of my knowledge and belief.
  Director #1
    
    Michael K. Klugman, President
    
    /s/ Michael K. KlugmanDirector #2
    
    Frank Sulzberger, MD
    
    /s/ Frank SulzbergerDirector #3
    
    Michael McFadden, MD
    
    /s/ Michael McFadden