2ND LOAN EXTENSION AND MODIFICATION AGREEMENT
Exhibit
      99.1
    This
      2nd
      Loan
      Extension and Modification Agreement (this “Agreement”), dated as of the
      Effective Date (defined below), is by and between ▇▇. ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇ and
      ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ (collectively referred to as the “Lender”) and SulphCo, Inc., a
      Nevada corporation (the “Borrower”).
    RECITALS:
    A.     On
      December 30, 2003, in exchange for funds in the amount of $500,000 advanced
      to
      Borrower, Borrower executed and delivered to Lender a note (the "Note") in
      the
      principal sum of $500,000 (the "Loan") and with the original interest fully
      prepaid through December 30, 2004 through the issuance of 500,000 shares of
      the
      Borrower’s common stock, with the principal sum due and payable on December 30,
      2004; 
    B.     On
      December 12, 2004, Borrower and Lender entered into an agreement to extend
      the
      term of the Note for the principal sum of $500,000 for one year from December
      30, 2004 and becoming due on December 30, 2005 (the “1st
      Loan
      Extension Agreement”);
    C.     Lender
      and Borrower desire to again extend the term of the Loan for one more year,
      provide for additional interest to be accrued and paid during the extension
      period, and provide for prepayment upon demand by Lender; and
    D.     This
      Agreement shall be submitted to the Borrower’s Audit Committee and Board of
      Directors for their respective approval before it may become
      effective.
    NOW,
      THEREFORE, for and in consideration of the mutual covenants contained herein
      and
      for other valuable consideration, the receipt and sufficiency of which are
      hereby acknowledged, the parties hereto agree as follows:
    1.     Extension.
      The
      Lender and Borrower agree that the entire principal amount of the Loan shall
      become due and payable, together with any accrued and unpaid interest thereon,
      on December 30, 2006.
    2.     Interest
      during Extension Period.
      The
      principal balance of the Loan from time to time shall bear interest at an annual
      rate equal to 8% commencing from December 31, 2005, and continuing, until the
      Note is paid in full. The interest shall be due and payable in quarterly
      installments commencing on April 1, 2006, provided there are then unrestricted
      sources of funds from which such interest payments may be made.
    3.     Prepayment.
      The
      Borrower agrees that it will prepay the Note upon demand by Lender. Interest
      will accrue until the date of payment and be paid on that date.
    4.     Audit
      Committee Approval; Effective Date.
      The
      effectiveness of this Agreement is conditioned upon the approval of its terms
      by
      the Borrower’s Audit Committee. The Effective Date will be the date upon which
      the Audit Committee approves this Agreement.
    5.     Except
      as provided in this Agreement, the terms and provisions of the Note shall remain
      unchanged and shall remain in full force and effect. The Note as modified and
      amended hereby is hereby ratified and confirmed in all respects.
    6.     Lender
      acknowledges that the execution of this Agreement by Borrower is not intended
      nor shall it be construed as (i) an actual or implied waiver of any subsequent
      default under the Note or the 1st
      Loan Extension Agreement or (ii) an actual or implied waiver of any condition
      or
      obligation imposed upon Lender pursuant to the Note except to the extent
      expressly set forth herein.
    7.     This
      Agreement may be executed in any number of counterparts. All such counterparts
      shall be construed together and shall constitute one instrument, but in making
      proof hereof it shall only be necessary to produce one such
      counterpart.
    8.     The
      terms and provisions hereof shall be binding upon and inure to the benefit
      of
      the parties hereto, their heirs, representatives, successors and
      assigns.
    IN
      WITNESS WHEREOF, the parties have fully executed this Agreement as
      of the respective dates of acknowledgment, but is effective as of the Effective
      Date
      set
      forth above.
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                 Borrower: 
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                 SULPHCO,
                  INC. 
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                 Lender: 
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                 By
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                 Chief
                    Financial Officer 
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                 /s/
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