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

                               FORM 13F COVER PAGE

THIS FILING LISTS SECURITIES HOLDINGS REPORTED ON THE FORM 13F FILED ON
MAY 14, 2001 PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT AND FOR WHICH
CONFIDENTIAL TREATMENT HAS EXPIRED ON FEBRUARY 14, 2002.

Report for the Calendar Year or Quarter Ended:  March 31, 2001

Check here if Amendment [ X ]; Amendment Number:    3
                                                 -------------
   This Amendment (Check only one.): [   ]  is a restatement.
                                     [ X ]  adds new holdings entries.
Institutional Investment Manager Filing this Report:

Name:             International Specialty Products Inc.
Address:          300 Delaware Avenue
                  Wilmington, Delaware  19801

Form 13F File Number:  28-5874

The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:             Richard A. Weinberg
Title:            Executive Vice President and General Counsel
Phone:            973-628-3520

Signature, Place, and Date of Signing:

/s/ Richard A. Weinberg              Wayne, New Jersey     February 18, 2002
-----------------------              -----------------     -----------------
[Signature]                            [City, State]            [Date]

Report Type (Check only one.):

[X] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting
    manager are reported in this report.)

[ ] 13F NOTICE. (Check here if no holdings reported are in this report, and all
    holdings are reported by other reporting manager(s).)

[ ] 13F COMBINATION REPORT. (Check here if a portion of the holdings for this
    reporting manager are reported in this report and a portion are reported by
    other reporting manager(s).)



                              Form 13F SUMMARY PAGE

Report Summary:


Number of Other Included Managers:                    1

Form 13F Information Table Entry Total:               1

Form 13F Information Table Value Total:          $39,047
                                                 (thousands)

Confidential information has been omitted and filed with the Commission in
accordance with Rule 24b-2 and Form 13F.

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F file number(s) of all
institutional investment managers with respect to which this report is filed,
other than the manager filing this report.

No.               Form 13F File Number                        Name
---               --------------------                        ----

1                       28-7274                     ISP Opco Holdings Inc.






Column 1            Column 2    Column 3      Column 4        Column 5       Column 6      Column 7              Column 8

                     Title                                     Shares
                       Of                      Value             or         Investment       Other           Voting Authority
Name of Issuer       Class       CUSIP       (x $1,000)       Prin Amt      Discretion     Managers    Sole        Shared      None
--------------       -----       -----       ----------       --------      ----------     --------    ----        ------      ----

                                                                                               
Ralston Purina        COM      751277302          39,047      1,253,500SH     DEFINED          1                    1,253,500

                            Column Total          39,047




Pursuant to the Instructions to Form 13F, holdings of fewer than 10,000 shares
and less than $200,000 aggregate fair market value have not been reported.

As of 3/31/01