LOCKE LIDDELL & SAPP LLP
                             ATTORNEYS & COUNSELORS
2200 ROSS AVENUE                                                  (214) 740-8000
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DALLAS, TEXAS  75201-6776                                   www.lockeliddell.com
                    AUSTIN 0 DALLAS 0 HOUSTON 0 NEW ORLEANS

                                                                     EXHIBIT 5.1

                                 March 30, 2005



Kronos International, Inc.
5430 LBJ Freeway, Suite 1700
Dallas, Texas 75240

         Re:      Kronos International, Inc. Registration Statement on Form S-4

Ladies and Gentlemen:

     We have acted as special counsel to Kronos International,  Inc., a Delaware
corporation  (the  "Company"),   in  connection  with  the  public  offering  of
(euro)90,000,000  aggregate  principal  amount of the  Company's  8 7/8%  Senior
Secured  Notes due 2009 (the  "Exchange  Notes").  The Exchange  Notes are to be
issued pursuant to an exchange offer (the "Exchange Offer") in exchange for like
principal  amounts of the issued and outstanding 8 7/8% Senior Secured Notes due
2009 of the Company issued on November 26, 2004 (the "Original  Notes") under an
Indenture, dated as of June 28, 2002 (the "Indenture"), by and among the Company
and The Bank of New York, as Trustee (the  "Trustee"),  as  contemplated  by the
Registration Rights Agreement,  dated as of November 26, 2004 (the "Registration
Rights Agreement"), between the Company and Deutsche Bank AG London.

     This opinion is being furnished in accordance with the requirements of Item
601(b)(5) of Regulation  S-K under the  Securities  Act of 1933, as amended (the
"Act").

     In  connection  with this opinion,  we have  examined  originals or copies,
certified or otherwise  identified to our satisfaction,  of (i) the Registration
Statement on Form S-4 as filed with the Securities and Exchange  Commission (the
"Commission")  under the Act on the date hereof (the "Registration  Statement");
(ii) an executed copy of the Registration  Rights  Agreement;  (iii) an executed
copy of the Indenture; (iv) the Certificate of Incorporation of the Company; (v)
the Bylaws,  as amended,  of the Company,  as currently in effect;  (vi) certain
resolutions  of  the  Board  of  Directors  of  the  Company   relating  to  the
Registration Rights Agreement,  the Exchange Offer, the issuance of the Original
Notes and the Exchange Notes, the Indenture and related matters;  (vii) the Form
T-1 of the Trustee;  (viii) the form of the  Exchange  Notes and (ix) such other
documents as we have deemed necessary or appropriate as a basis for the opinions
set forth  herein.  We have also  examined  originals  or copies,  certified  or


Kronos International, Inc.
March 30, 2005
Page 2

otherwise  identified  to our  satisfaction,  of such records of the Company and
such agreements,  certificates of public officials,  certificates of officers or
other  representatives  of the  Company  and such other  statements,  documents,
certificates  and  corporate  or other  records as we have deemed  necessary  or
appropriate as a basis for the opinions set forth herein.

     In our  examination,  we have  assumed  the legal  capacity  of all natural
persons,  the genuineness of all signatures,  the  authenticity of all documents
submitted  to us as  originals,  the  conformity  to original  documents  of all
documents   submitted  to  us  as  certified  or  photostatic   copies  and  the
authenticity  of  the  originals  of  such  latter  documents.   In  making  our
examination  of executed  documents,  we have assumed that the parties  thereto,
other than the Company, had or will have the power, corporate or other, to enter
into and  perform  all  obligations  thereunder  and have also  assumed  the due
authorization  by all requisite  action,  corporate or other,  and execution and
delivery by such parties of such  documents and the validity and binding  effect
on such parties. As to any facts material to the opinions expressed herein which
were not  independently  established  or  verified,  we have relied upon oral or
written statements and representations of the Company and others.

     The opinions set forth herein are subject to the qualification  that we are
admitted to  practice  law in the State of Texas and we express no opinion as to
laws other than the law of the State of Texas and the  federal law of the United
States of America.

     Based upon the  foregoing and subject to the  limitations,  qualifications,
exceptions and assumptions set forth herein, we are of the opinion that:

     When (i) the  Registration  Statement,  including any  amendments  thereto,
becomes  effective  under  the Act,  and (ii) the  Exchange  Notes  (in the form
examined by us) have been duly executed and authenticated in accordance with the
terms of the Indenture and have been issued and delivered upon  consummation  of
the Exchange  Offer against  receipt of Original  Notes  surrendered in exchange
therefor in accordance with the terms of the Exchange Offer,  the Exchange Notes
will constitute  valid and binding  obligations of the Company,  entitled to the
benefits of the  Indenture,  and  enforceable  against the Company in accordance
with their terms,  except that (A) the enforcement  thereof may be subject to or
limited by (1) bankruptcy,  insolvency,  reorganization,  moratorium, fraudulent
conveyance  or other  similar  laws  now or  hereafter  in  effect  relating  to
creditors' rights generally and (2) general  principles of equity (regardless of
whether such  enforceability  is considered in a proceeding at law or in equity)
and  (B)  the  waiver   included  in  Section  4.6  of  the   Indenture  may  be
unenforceable.

     In  rendering  the  opinions  set forth  above,  we have  assumed  that the
execution and delivery by the Company of the  Indenture  and the Exchange  Notes
and the performance by the Company of its obligations thereunder do not and will
not  violate,  conflict  with or  constitute  a default  under any  agreement or
instrument to which the Company or any of its properties is subject,  except for
those  agreements and  instruments  governed by the laws of the United States or
any state  thereof  that  have been  identified  to us by the  Company  as being
material  to it and  that  have  been  filed  as  exhibits  to the  Registration
Statement.

     We have  also  assumed  that  the  choice  of New York  law to  govern  the
Indenture is a valid and effective  provision under the laws of other applicable
jurisdictions.


Kronos International, Inc.
March 30, 2005
Page 3


     We hereby  consent to the filing of this opinion with the  Commission as an
exhibit to the Registration  Statement.  We also consent to the reference to our
firm under the caption "Legal  Matters" in the prospectus  that is filed as part
of the Registration  Statement.  In giving this consent, we do not thereby admit
that we are "experts" within the meaning of Section 11 of the Act or included in
the category of persons whose consent is required  under Section 7 of the Act or
the rules and regulations of the Commission.

                              Very truly yours,

                              LOCKE LIDDELL & SAPP LLP



                         By: /s/ Don M. Glendenning
                             -----------------------------------
                             Don M. Glendenning