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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549


                                  SCHEDULE 13G



                   Under the Securities Exchange Act of 1934
                              (Amendment No. 3)*
                                (Rule 13d-102)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c)
           AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2(b)

                                CHEMFIRST INC.
- --------------------------------------------------------------------------------
                               (Name of Issuer)

                                 Common Stock
- --------------------------------------------------------------------------------
                        (Title of Class of Securities)

                                   16361A106
                        ------------------------------
                                 (CUSIP Number)


Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

     [_] Rule 13d-1(b)

     [_] Rule 13d-1(c)

     [X] Rule 13d-1(d)

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*    The remainder of this cover page shall be filled out for a reporting
     person's initial filing on this form with respect to the subject class of
     securities, and for any subsequent amendment containing information which
     would alter the disclosures provided in a prior cover page.

     The information required in the remainder of this cover page shall not be
     deemed to be "filed" for the purpose of Section 18 of the Securities
     Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of
     that section of the Act but shall be subject to all other provisions of the
     Act (however, see the Notes).

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CUSIP NO. 16361A106                     13G                    PAGE 1 OF 1 PAGES



- ------------------------------------------------------------------------------
      NAMES OF REPORTING PERSONS.
 1    I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).


      J. KELLEY WILLIAMS
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
 2                                                              (a) [_]
                                                                (b) [_]
      N/A
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3


- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4

      USA
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5
     NUMBER OF
                          1,532,016
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6

     OWNED BY             0
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7
    REPORTING
                          1,532,016
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8
                          0
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9
                          1,532,016
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
10    (SEE INSTRUCTIONS)
                                                                    [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11
      8.3%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
12
      IN
- ------------------------------------------------------------------------------


ITEM 1.

(a)  Name of Issuer:

     ChemFirst Inc.
     700 North Street
     P. O. Box 1249
     Jackson, MS  39215-1249

(b)  Address of Issuer's Principal Executive Offices, or, if None, Residence:

     700 North Street
     P. O. Box 1249
     Jackson, MS  39215-1249

ITEM 2.

(a)  Name of Person Filing:   J. Kelley Williams

(b)  Address of Principal Business Office:

     ChemFirst Inc.
     700 North Street
     P. O. Box 1249
     Jackson, MS  39215-1249

     Person filing is Chief Executive Officer and Chairman of the Board of the
issuer.

(c)  Citizenship:   USA

(d)  Title of Class of Securities:   Common Stock

(e)  Cusip Number:  16361A106

ITEM 3.  IF THIS STATEMENT IS FILED PURSUANT TO RULE 13d-1(b), OR 13d-2(b) OR
         (c), CHECK WHETHER THE PERSON FILING IS A:

     Not applicable.

ITEM 4.  OWNERSHIP

(a)  Amount beneficially owned as of December 31, 1999:  1,532,016 (includes
     436,243 shares which the reporting person has the right to acquire)

(b)  Percent of Class:  8.3%


(c)  Person filing has sole power to vote or to direct the vote and sole power
     to dispose or direct the disposition of 1,532,016 shares.

     Person filing does not share power to vote or to direct the vote or share
     power to dispose or direct the disposition of any shares.

ITEM 5.  OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS [ ]

ITEM 6.  OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON

     Not applicable.

ITEM 7.  IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE
         SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY

     Not applicable.

ITEM 8.  IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP

     Not applicable.

ITEM 9.  NOTICE OF DISSOLUTION OF GROUP

     Not applicable.

ITEM 10.  CERTIFICATIONS

     The certifications pursuant to Rule 13(d)-1(b) and Rule 13(d)-1(c) are not
     applicable.



                                   SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.


2/9/00          /s/ J. Kelley  Williams
- ------          -----------------------
Date                J. Kelley Williams