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                                                                   EXHIBIT 10.17



                                                Effective as of October 29, 1998

Mr. Donald Perkins
One First National Plaza
21 South Clark Street
Suite 2530
Chicago, Illinois 60603

Dear Don:

The following sets forth our agreement concerning the consulting services you
have performed for Nanophase Technologies Corporation ("NTC") since you joined
the NTC Board in February 1998, and which you may perform in the future.

1.   Duties. We agree that you have performed substantial consulting services
     for NTC since February of 1998 in the identification, screening and
     recruitment of management personnel, issues related to the
     responsibilities of management personnel and the organization of NTC's
     management, and the development and implementation of NTC's business
     plans, and that you may continue to work with NTC in the future on such
     matters from time to time under the terms of this letter agreement.

2.   Scope of Services. We agree that you will devote time to your duties as a
     consultant to NTC as we mutually agree, and in any event consistent with
     your schedule and other demands which may be placed on your time and
     attention.

3.   Compensation. In consideration of your services as a consultant to NTC,
     the Board of NTC has agreed to grant you an option to acquire 25,000
     shares of NTC common stock, on the terms and conditions set forth in a
     separate option agreement that we have provided to you. You will not be
     entitled to receive any medical, health or other benefit plans maintained
     for other employees of NTC. The above compensation is not in lieu of, and
     does not replace or effect, any compensation you are entitled to receive
     as a director of NTC.

4.   Expense Reimbursement. NTC will reimburse you for actual out-of-pocket
     expenses incurred by you in connection with your services as a consultant
     to NTC. Such expenses will be reimbursed upon receipt of appropriate
     documentation of such expenses.

5.   Confidential Information and Proprietary Rights. In the course of your
     work with NTC, you have had and will have access to information about NTC
     that is confidential in nature. You acknowledge that you will keep all
     such information confidential, and that NTC is the owner of all such
     information and related proprietary rights. You agree that if requested by
     NTC you will execute appropriate instruments evidencing your
     confidentiality obligation and NTC=s proprietary rights.

6.   Conflicts of Interest. You confirm that you are not a party to any
     agreement or arrangement, whether oral or written, which would constitute
     a conflict of interest with this agreement or would prevent you from
     carrying out your obligations to NTC under this agreement.

7.   Other Terms of Engagement. Both you and NTC acknowledge that your
     services as a consultant to NTC are at will and may be terminated at any
     time with or without cause by either you or NTC. Termination of




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Mr. Donald Perkins                              Effective as of October 29, 1998
Page 2 of 2


     your consulting services will not in any way effect your membership on
     the Board of Directors of NTC. You and NTC also acknowledge that you are
     an independent Contractor to NTC, and that you will not have authority to
     bind NTC in ant respect, and will be solely responsible for the payment of
     any taxes owing on compensation paid to you by NTC. This agreement, and
     all aspects of your consulting services with NTC, shall be governed by
     Illinois law.

                          *     *     *     *     *

If you agree to the above terms concerning your consulting services to NTC,
please sign the enclosed copy of this letter and return it to me at your
earliest convenience.

Very truly yours,
Nanophase Technologies Corporation, a Delaware Corporation



By: /s/ Joseph Cross                                        
   -------------------------------------------------------
   Joseph Cross, its President and Chief Executive Officer



Agreed and accepted:




                /s/ Donald Perkins
                -------------------
                Donald Perkins