KRONOS WORLDWIDE, INC.                         Contact: Gregory M. Swalwell
Three Lincoln Centre                           Vice President, Finance and Chief
5430 LBJ Freeway, Suite 1700                   Financial Officer
Dallas, Texas  75240-2697                      (972) 233-1700


- -------------------------------------------------------------------------------
                                  News Release
- -------------------------------------------------------------------------------

FOR IMMEDIATE RELEASE

                 KRONOS WORLDWIDE, INC. ANNOUNCES COMPLETION OF
          EXCHANGE OFFER FOR (euro)400 MILLION OF SENIOR SECURED NOTES
                  OF ITS KRONOS INTERNATIONAL, INC. SUBSIDIARY


DALLAS, TX - July 25, 2006 - Kronos Worldwide,  Inc. (NYSE: KRO) today announced
that its wholly-owned  subsidiary,  Kronos  International,  Inc.,  completed its
previously  announced offer to exchange  (euro)400 million  aggregate  principal
amount of 6 1/2%  Senior  Secured  Notes due 2013 issued on April 11, 2006 for a
like principal  amount of notes that have been  registered  under the Securities
Act of 1933, as amended.  The Company was advised by the exchange  agent for the
exchange  offer that an aggregate  principal  amount of  (euro)399,450,000  were
validly tendered and accepted in the exchange offer.

Kronos International, Inc. conducts Kronos Worldwide's titanium dioxide pigments
operations in Europe.

The statements in this release relating to matters that are not historical facts
are  forward-looking   statements  that  represent   management's   beliefs  and
assumptions based on currently available information. Forward-looking statements
can be identified by the use of words such as "will," "anticipates,"  "expects,"
or comparable  terminology or by discussions of strategy or trends.  Although we
believe that the expectations  reflected in such forward-looking  statements are
reasonable,  it cannot give any assurances that these expectations will prove to
be correct.  Such  statements by their nature  involve risks and  uncertainties,
including,  but not  limited  to,  global  economic  and  political  conditions,
financial  market  conditions,  changes  in  foreign  currency  exchange  rates,
operating interruptions  (including,  but not limited to, labor disputes, leaks,
fires, explosions,  unscheduled downtime,  transportation interruptions, war and
terrorist  activities),  and  other  risks  and  uncertainties  detailed  in our
Securities and Exchange  Commission  filings.  Should one or more of these risks
materialize (or the  consequences of such a development  worsen),  or should the
underlying  assumptions prove incorrect,  actual results could differ materially
from those  forecasted  or expected.  We disclaim any intention or obligation to
update  publicly  or  revise  such  statements,  whether  as  a  result  of  new
information, future events or otherwise.

Kronos  Worldwide,  Inc. is a major  international  producer of titanium dioxide
pigments.

This news release does not  constitute an offer to sell or the  solicitation  of
any offer to buy any securities.