The Exhibit Index begins on page 2.
     As filed with the Securities and Exchange Commission on August 4, 1999
                          Registration No. ____________


                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                           --------------------------
                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
                           --------------------------

                             ACME UNITED CORPORATION
                             -----------------------
             (Exact name of registrant as specified in its charter)

         Connecticut                                    06-0236700
         -----------                                    ----------
(State or other jurisdiction of             (I.R.S. Employer Identification No.)
incorporation or organization)

75 Kings Highway Cutoff                                    06430
- -----------------------                                    -----
Fairfield, CT                                            (Zip Code)
- -------------
(Addresses of principal
executive offices)

         ACME UNITED CORPORATION NON-SALARIED DIRECTOR STOCK OPTION PLAN
         ---------------------------------------------------------------
                              (Full title of plan)

(Name, address and telephone
number of agent for service)                   (Copy to:)

Ronald P. Davanzo
Acme United Corporation                        James E. Rice, Esquire
75 Kings Highway Cutoff                        Brody, Wilkinson and Ober, P.C.
Fairfield, CT 06430                            2507 Post Road
(203) 332-7330                                 Southport, CT 06490
                                               (203) 319-7100

                         CALCULATION OF REGISTRATION FEE
- --------------------------------------------------------------------------------
                               Proposed         Proposed
Title of                       maximum          maximum
securities        Amount       offering         aggregate       Amount of
to be             to be        price per        offering        registration
registered        registered   share            price           fee
- --------------------------------------------------------------------------------
Common Stock
(par value         60,000      $1.9375          $116,250        $32.32
$2.50 per share)   shares(1)    (2)              (2)             (2)

         (1) In connection  with the  referenced  Plan,  60,000 shares of Common
Stock were  previously  registered  with the  Commission on an S-8  Registration
Statement (No. 333-26739) filed on May 9, 1997.

         (2) Pursuant to Rule 457(h)(1), the proposed maximum offering price per
share,  proposed  maximum  aggregate  offering  price  and  the  amount  of  the
registration  fee are based on the  average  of the daily high and low prices of
Acme United  Corporation  Common Stock on the American  Stock Exchange on August
4, 1999 (i.e., $1.9375 per share).





         PART I.

         On May 9,  1997,  Acme  United  Corporation  (the  "Company")  filed  a
registration  statement on form S-8 (No. 333-26739) relating to 60,000 shares of
the Company's  Common Stock,  $2.50 per share par value  ("Common  Stock") to be
issued   pursuant  to  the   Non-Salaried   Director  Stock  Option  Plan.  This
registration  statement  relates to the registration of 60,000 additional shares
of Common Stock to be issued pursuant to the Non-Salaried  Director Stock Option
Plan as amended by the Board of Directors of the Company on January 27, 1998 and
approved by the  shareholders  of the Company on April 27, 1998,  in  accordance
with  Instruction  E to Form S-8.  The  securities  to which  this  registration
statement  relates are the same class as, and are issued under the same Employee
Benefit  Plan as, the  securities  previously  registered  in  registration  No.
333-26739.  Except for Part II,  Item 8 which is amended in its  entirety as set
forth  below,  the  contents  of  registration  statement  No.  333-  26739  are
incorporated by reference herein.


         ITEM 8.    Exhibits


         4(a)  1998 Amendments of Acme United Corporation Non-Salaried Director
               Stock Option Plan
         5     Opinion of Counsel Regarding the Legality of the Shares of Common
               Stock being Registered
         23(a) Consent of Counsel (included in Exhibit 5)
         23(b) Consent of Ernst & Young LLP, Independent Auditors
         23(c) Consent of PricewaterhouseCoopers LLP, Independent Accountants


         SIGNATURES

         Pursuant  to  the  requirement  of the  Securities  Act  of  1933,  the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on form S-8 and has duly caused this Registration
Statement  to be  signed  on  its  behalf  by  the  undersigned  thereunto  duly
authorized, in the  Town of Fairfield,  State of Connecticut, on this 4th day of
August, 1999.



                                  Acme United Corporation



                                  By: /s/ Walter C. Johnsen
                                      ----------------------------
                                          Walter C. Johnsen
                                          President and Chief Executive Officer
                                          [Principal Executive Officer]


Pursuant to the  requirements of the Securities Act of 1933,  this  Registration
Statement has been signed by the following  persons in the capacities and on the
date indicated.

         Signature                      Title                     Date
         ---------                      -----                     ----

/s/ Walter C. Johnsen               President, Chief Executive    August 2, 1999
- ------------------------------      Officer and Director
    Walter C. Johnsen

/s/ Gary D. Penisten                Chairman of the Board         August 3, 1999
- ------------------------------      and Director
    Gary D. Penisten

/s/ Ronald P. Davanzo               Vice President, Treasurer,    August 3, 1999
- ------------------------------      Secretary and Principal
    Ronald P. Davanzo               Financial Officer

/s/ William K. Gyuricsko            Controller                    August 3, 1999
- ------------------------------
    William K. Gyuricsko


/s/ Richmond Y. Holden, Jr.         Director                      August 3, 1999
- ------------------------------
    Richmond Y. Holden, Jr.


/s/ Wayne R. Moore                  Director                      August 2, 1999
- ------------------------------
    Wayne R. Moore


/s/ George R. Dunbar                Director                      August 3, 1999
- ------------------------------
    George R. Dunbar


/s/ David W. Clark , Jr.            Director                      August 3, 1999
- ------------------------------
    David W. Clark, Jr.


/s/ Peter H. Kamin                  Director                      August 4, 1999
- ------------------------------
    Peter H. Kamin




         INDEX OF EXHIBITS ACCOMPANYING THE S-8 REGISTRATION STATEMENT


         Exhibit           Description                               Sequential
                                                                     Page
                                                                     Number


         4(a)  1998 Amendments of Acme United Corporation  Non-Salaried Director
               Stock Option Plan
         5     Opinion of Brody, Wilkinson and Ober, P.C. Regarding the Legality
               of the Shares of Common Stock
         23(a) Consent of Brody, Wilkinson and Ober, P.C..*
         23(b) Consent of Ernst & Young LLP, Independent Auditors
         23(c) Consent of PricewaterhouseCoopers LLP, Independent Accountants


*Included in exhibit 5.


                                  EXHIBIT 4(a)
                                  ------------

                             ACME UNITED CORPORATION
              AMENDMENTS TO NON-SALARIED DIRECTOR STOCK OPTION PLAN
                            ADOPTED JANUARY 27, 1998


1.   The first paragraph of Section 1.5 is amended to read as follows:

     The aggregate  number of shares of Common Stock,  including shares reserved
     for issuance pursuant to the exercise of Options, which may be issued under
     the terms of the  Plan,  may not  exceed  120,000  shares  and  hereby  are
     reserved  for such  purpose.  Whenever  any  outstanding  grant or  portion
     thereof  expires,  is canceled or forfeited or is otherwise  terminated for
     any reason without having been exercised, the Common Stock allocable to the
     expired,  forfeited,  canceled or otherwise terminated portion of the grant
     may again be the subject of further grants hereunder.

2.   Section 2.1 is amended by the addition of a second paragraph as follows:

     Each  Participant who is elected a director at an annual meeting and is not
     receiving  an initial  option  grant of 10,000  shares will receive a 2,500
     share option grant each year. These shares will be immediately vested.

3.   Section 2.4(a) is amended to read as follows:

     (a) The term of an Option  shall not exceed ten (10) years from the date of
     grant.  Except as provided in this Section 2.4, after a Participant  ceases
     to serve as a Director of the Company,  including,  without limitation, any
     voluntary  or  involuntary  termination  of a  Participant's  service  as a
     director (a  "Termination"),  the unexercisable  portion of an Option shall
     immediately  terminate and be null and void, and the unexercised portion of
     any  outstanding  Options held by such  Participant  shall terminate and be
     null and void for all purposes,  after thirty (30) days (or, for any option
     granted  prior to April 28, 1997 three (3) months)  have  elapsed  from the
     date of the  Termination  unless  extended  by the  Committee,  in its sole
     discretion,  within thirty (30) days from the date of the Termination. Upon
     a  Termination  as  a  result  of  death,  Disability  or  Retirement,  any
     outstanding   Options  may  be   exercised  by  the   Participant   or  the
     Participant's  legal  representative  within  twelve (12) months after such
     death, Disability or Retirement;  provided, however, that in no event shall
     the period extend beyond the expiration of the option term. "Retirement" is
     defined  for  the  purposes  of  this  Section  as  the  termination  of  a
     Participant's  service as a  director  (i) at the end of his term of office
     where he is not re-elected or (ii) during his term of office,  for a reason
     other than death or Disability; provided, in either case, that the Board of
     Directors,  in its sole  discretion,  determines  that the  Participant  is
     entitled to the benefit of Retirement under this subsection.


4.   Section 3.4 is amended to read as follows:

     No rights or  obligations  under any  outstanding  Option may be altered or
     impaired without the Participant's consent. Any grant under the Plan may be
     canceled at any time with the consent of the  Participant,  and a new grant
     may be provided to such  Participant  in lieu  thereof.  The Company at its
     discretion  and  with  the  agreement  of the  Participant  may buy out the
     Participant's  option rights on Termination in return for  cancellation  of
     exercisable grants.

5.   Section 3.7 is amended to read as follows:

     If a Participant  is to  experience a taxable event in connection  with the
     receipt  of shares of Common  Stock  pursuant  to an Option  exercise,  the
     Participant  shall pay the  amount  equal to the  federal,  state and local
     income taxes and other  amounts as may be required by law to be withheld to
     the Company prior to the issuance of such shares of Common Stock. If a cash
     payment  is made in  lieu of  exercise,  taxes  will  also be  withheld  as
     required by law.




James E. Rice
Direct Line:  319-7112


   OPINION OF COUNSEL REGARDING THE LEGALITY OF THE SHARES OF COMMON STOCK --
                                    EXHIBIT 5

                                                August 3, 1999

Acme United Corporation
75 Kings Highway Cutoff
Fairfield, CT 06430

Dear Sir or Madam:

         We have acted as counsel for Acme United Corporation (the "Company") in
connection  with the  preparation  and filing with the  Securities  and Exchange
Commission of the  Amendment to Form S-8  Registration  Statement  (the "Amended
Registration  Statement")  relating  to an  additional  60,000  shares of Common
Stock,  par value $2.50 per share,  of the Company  (the  "Common  Stock") to be
offered  pursuant to the Acme United  Corporation  Non-Salaried  Director  Stock
Option Plan (the "Plan").

         We  have   examined  and  are   familiar   with  (i)  the  Articles  of
Incorporation  and the Bylaws of the  Company,  (ii) the  corporate  proceedings
authorizing  the issuance of 60,000 shares of Common Stock pursuant to the Plan,
and (ii) such other documents and  instruments as we have  considered  necessary
for the purposes of the opinions hereinafter set forth.

         Based upon the foregoing, we are of the opinion that:

         1.       The  Company  has  been  duly  incorporated  and is a  validly
                  existing  corporation  in good standing  under the laws of the
                  State of Connecticut.

         2.       Upon  issuance  and  delivery  of the  shares of Common  Stock
                  pursuant  to the Plan and payment to the Company of the option
                  price  for the  Common  Stock,  such  shares  will be  validly
                  issued, fully paid, and nonassessable.

         We  hereby  consent  to the  use of  this  opinion  and  our  names  in
connection with the Amended Registration Statement filed with the Securities and
Exchange  Commission  to  register  the shares of Common  Stock to be offered as
aforesaid.

                                            Very truly yours,


                                            /s/ Brody, Wilkinson and Ober, P.C.
                                            -----------------------------------
                                                Brody, Wilkinson and Ober, P.C.


Exhibit 23(b)




               Consent of Ernst & Young LLP, Independent Auditors


We consent to the incorporation by reference in the Registration Statement (Form
S-8)  pertaining  to the Acme United  Corporation  Non-Salaried  Director  Stock
Option Plan of our report dated March 25, 1999, with respect to the consolidated
financial  statements and schedule of Acme United  Corporation and  subsidiaries
included in its Annual Report (Form 10-K) for the year ended  December 31, 1998,
filed with the Securities and Exchange Commission.

                                              /s/ Ernst & Young LLP
                                              -----------------------
                                                  Ernst & Young LLP

Hartford, Connecticut
July 30, 1999



Exhibit 23(c)



         Consent of PricewaterhouseCoopers LLP, Independent Accountants


We  hereby  consent  to the  incorporation  by  reference  in  the  Registration
Statements  of Acme  United  Corporation  and  Subsidiaries  on Forms S-8 of our
report dated March 19, 1998,  except as to the information  presented in Note 2,
for  which  the  date is March  26,  1999,  on our  audits  of the  consolidated
financial statements and financial statement schedule of Acme United Corporation
and  Subsidiaries  as of December 31, 1997, and for the years ended December 31,
1997 and 1996, which appear in Acme United  Corporation's  Annual Report on Form
10-K for the year ended December 31, 1998.

/s/ PricewaterhouseCoopers LLP
- --------------------------------
    PricewaterhouseCoopers LLP


Hartford, Connecticut
August 2, 1999