Kronos Worldwide, Inc.                   Contact:   Gregory M. Swalwell
Three Lincoln Centre                                Vice President, Finance
5430 LBJ Freeway, Suite 1700                        and Chief Financial Officer
Dallas, TX  75240-2697                              (972) 233-1700
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                                  News Release
- -------------------------------------------------------------------------------

FOR IMMEDIATE RELEASE


                 KRONOS WORLDWIDE REPORTS SECOND QUARTER RESULTS

DALLAS,   TEXAS...August  5,  2004...Kronos  Worldwide,  Inc.  (NYSE:KRO)  today
reported net income for the second quarter of 2004 of $267.5  million,  or $5.47
per  diluted  share,  compared  with net  income of $41.8  million,  or $.85 per
diluted share,  in the second quarter of 2003. For the first six months of 2004,
Kronos  reported  net  income of $277.3  million,  or $5.67 per  diluted  share,
compared with net income of $58.5 million,  or $1.19 per diluted  share,  in the
first six months of 2003.  The primary  reason for the increase in net income in
the 2004 periods is due to certain income tax benefits, as described herein.

Sales of $295.8  million in the second  quarter of 2004 were $29.2  million,  or
11%,  higher than the second quarter of 2003, and sales increased $39.5 million,
or 8%, to $559.1  million  for the first six months of 2004 as  compared  to the
first six months of 2003, as the  favorable  effect of  fluctuations  in foreign
currency exchange rates,  which increased sales by approximately $13 million and
$35 million,  respectively,  and higher TiO2 sales  volumes more than offset the
impact of lower average TiO2 selling prices.

The Company's  operating results in the second quarter of 2004 include income of
$6.3  million  ($.08 per  diluted  share,  net of income  taxes)  related to the
settlement of a contract  dispute with a customer.  The  Company's  TiO2 segment
profit (see description of non-GAAP information below) for the second quarter of
2004 was $40.1  million  compared  with $35.5  million in the second  quarter of
2003, and was $66.4 million for the first six months of 2004 compared with $69.7
million for the first six months of 2003. In addition to the favorable effect of
the contract dispute  settlement,  segment profit  comparability was principally
impacted by fluctuations  in foreign  currency  exchange rates,  which favorably
impacted segment profit comparability by approximately $6 million and $8 million
for the quarter and year-to-date periods, respectively, the higher sales volumes
and the lower average TiO2 selling prices.

The Company's  average selling prices in billing  currencies (which excludes the
effects  of  fluctuations  in the  value of the U.S.  dollar  relative  to other
currencies)  during both the second quarter and first six months of 2004 were 5%
lower than the respective  periods of 2003.  Expressed in U.S.  dollars computed
using actual foreign currency  exchange rates  prevailing  during the respective
periods, the Company's average selling prices in the second quarter of 2004 were
comparable  to the  second  quarter of 2003 and were 2% higher for the first six
months of 2004  compared with 2003.  Reflecting  the partial  implementation  of
prior price increase announcements,  the Company's average selling prices in the
second  quarter of 2004 were  generally  flat  compared to the first  quarter of
2004,  reversing the downward trend in selling prices that has existed since the
third quarter of 2003.

The  Company's  second  quarter 2004 TiO2 sales  volumes  increased 13% from the
second  quarter of 2003, as higher sales volumes in European and export  markets
more than offset the effect of lower  volumes in Canada.  TiO2 sales volumes for
the first six months of 2004 increased 6% from the first six months of 2003. The
Company's  second quarter 2004 TiO2  production  volumes were 3% higher than the
second  quarter  of 2003,  and were 1% higher  for the first six  months of 2004
compared  to 2003,  with  operating  rates at near full  capacity in all periods
presented.  Finished goods  inventories at June 30, 2004, which  represented 1.8
months of average  sales,  were lower as compared to December 31, 2003.  Kronos'
sales and  production  volumes  in the  first  six  months of 2004 were both new
records for Kronos.

Interest  expense to  affiliates  in the second  quarter and first six months of
2004 increased $4.2 million and $8.3 million, respectively,  from the comparable
prior year periods  primarily due to interest on the  Company's  $200 million 9%
long-term note payable to NL Industries, Inc. that the Company distributed to NL
in December 2003. In addition,  other interest expense increased due to relative
changes in foreign  currency  exchange  rates,  which  increased the U.S. dollar
equivalent of interest expense on the Company's  euro-denominated Senior Secured
Notes by approximately $600,000 and $1.7 million in the second quarter and first
six months of 2004, respectively, as compared to the year-ago periods.

The Company's  income tax benefit in the 2004 periods  includes a second quarter
$245.6  million tax benefit ($5.02 per diluted share) related to the reversal of
a deferred  income tax asset valuation  allowance  attributable to the Company's
income tax attributes in Germany (principally net operating loss carryforwards).
The reversal of the German valuation  allowance  reflects the Company's  revised
estimate of its ability to utilize its German net operating  loss  carryforwards
in the future  under the  "more-likely-than-not"  recognition  criteria.  In the
second  quarter of 2003,  the  Company  recognized  a $24.6  million  income tax
benefit ($.50 per diluted  share) related to the  previously-reported  favorable
German court ruling concerning its claim for refund suit.

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.  Although  the Company
believes 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  substantial  risks and
uncertainties  that could  significantly  impact  expected  results,  and actual
future   results  could  differ   materially   from  those   described  in  such
forward-looking  statements.  While it is not  possible to identify all factors,
the Company  continues to face many risks and  uncertainties.  Among the factors
that could cause actual future results to differ materially include, but are not
limited to:

o    Future supply and demand for the Company's products,
o    The cyclicality of certain of the Company's businesses,
o    Customer inventory levels,
o    Changes in raw material and other operating costs,
o    The possibility of labor disruptions,
o    General global economic and political conditions,
o    Competitive products and substitute products,
o    Customer and competitor strategies,
o    The impact of pricing and production decisions,
o    Competitive technology positions,
o    Fluctuations in currency exchange rates,
o    Operating interruptions,
o    The ability of the Company to renew or refinance credit facilities,
o    The ultimate  outcome of income tax audits,  tax settlement  initiatives or
     other tax controversies,
o    The ultimate ability to utilize income tax attributes, the benefit of which
     has been recognized under the "more-likely-than-not" recognition criteria,
o    Government laws and regulations and possible changes therein,
o    The ultimate resolution of pending litigation, and
o    Possible future litigation.

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  forecast or expected.  The
Company   disclaims  any  intention  or  obligation  to  update  or  revise  any
forward-looking statement whether as a result of new information,  future events
or otherwise.

In an effort to provide  investors  with  additional  information  regarding the
Company's results as determined by accounting  principles  generally accepted in
the  United  States of America  ("GAAP"),  the  Company  has  disclosed  certain
non-GAAP  information which the Company believes provides useful  information to
investors:

o    The Company discloses percentage changes in its average TiO2 selling prices
     in billing  currencies,  which  excludes  the  effects of foreign  currency
     translation.  The Company  believes  disclosure of such percentage  changes
     allows  investors to analyze such changes  without the impact of changes in
     foreign  currency  exchange rates,  thereby  facilitating  period-to-period
     comparisons  of relative  changes in average  selling  prices in the actual
     various  billing  currencies.   Generally,  when  the  U.S.  dollar  either
     strengthens or weakens against other  currencies,  the percentage change in
     average  selling  prices  in  billing  currencies  will be higher or lower,
     respectively,  than such percentage  changes would be using actual exchange
     rates prevailing during the respective periods.
o    The  Company  discloses  segment  profit,  which  is used by the  Company's
     management to assess the performance of the Company's TiO2 operations.  The
     Company believes  disclosure of segment profit provides useful  information
     to investors  because it allows investors to analyze the performance of the
     Company's  TiO2  operations in the same way that the  Company's  management
     assesses  performance.  The Company defines segment profit as income before
     income  taxes,  interest  expense  and  certain  general  corporate  items.
     Corporate items excluded from the  determination  of segment profit include
     corporate  expense and interest  income not  attributable  to the Company's
     TiO2 operations.

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






                             KRONOS WORLDWIDE, INC.
                   CONDENSED CONSOLIDATED STATEMENTS OF INCOME
               (In millions, except per share and metric ton data)
                                   (Unaudited)




                                                                  Three months ended          Six months ended
                                                                       June 30,                   June 30,
                                                               -----------------------------------------------------
                                                                   2003        2004          2003         2004
                                                               -----------------------------------------------------

                                                                                           
Net sales                                                       $    266.6  $   295.8     $    519.6   $   559.1
Cost of sales                                                        197.6      227.5          386.1       429.8
                                                               ----------- ----------    -----------  ----------

    Gross margin                                                      69.0       68.3          133.5       129.3

Selling, general and administrative expense                           31.0       35.0           60.4        70.2
Other operating income (expense):
  Currency transaction gains (losses), net                            (2.7)        .3           (3.8)         .6
  Contract dispute settlement                                          -          6.3            -           6.3
  Corporate expense                                                    (.9)       (.8)          (1.6)       (1.3)
                                                               ----------- ----------    -----------  ----------

    Income from operations                                            34.4       39.1           67.7        64.7

Other income (expense):
  Trade interest income                                                 .2         .2             .4          .4
  Interest income from affiliates                                       .3        -               .7           -
  Other interest income                                                 .1         .2             .1          .4
  Interest expense to affiliates                                       (.3)      (4.5)           (.7)       (9.0)
  Other interest expense                                              (8.4)      (8.6)         (16.4)      (17.8)
                                                               ----------- ----------    -----------  ----------

    Income before income taxes                                        26.3       26.4           51.8        38.7


Income tax benefit                                                   (15.5)    (241.1)         (6.7)      (238.6)
                                                               ----------- ----------    -----------  ----------

    Net income                                                 $       41.8 $   267.5    $      58.5   $   277.3
                                                               ============ =========    ===========  ==========


Basic and diluted net income per share                         $        .85 $    5.47    $      1.19   $    5.67
                                                               ============ =========    ===========   =========


Basic and diluted weighted-average
shares used in the calculation of net
income per share                                                       48.9      48.9           48.9        48.9

TiO2 data - metric tons in thousands:

  Sales volumes                                                      121.1      136.5          239.5       254.6
  Production volumes                                                 119.5      122.8          236.7       239.7






                             KRONOS WORLDWIDE, INC.

                       RECONCILIATION OF SEGMENT PROFIT TO
                             INCOME FROM OPERATIONS
                                  (In millions)
                                   (Unaudited)




                                                                  Three months ended          Six months ended
                                                                       June 30,                   June 30,
                                                               -----------------------------------------------------
                                                                   2003        2004          2003         2004
                                                               -----------------------------------------------------

                                                                                           
Segment profit                                                  $     35.5  $    40.1      $    69.7   $    66.4

Adjustments:

   Trade interest income                                               (.2)       (.2)           (.4)        (.4)

   Corporate expense                                                   (.9)       (.8)          (1.6)       (1.3)
                                                                ----------  ---------      ---------   ---------

Income from operations                                          $     34.4  $    39.1     $     67.7    $   64.7
                                                                ==========  =========     ==========    ========




                     RECONCILIATION OF PERCENTAGE CHANGE IN
                             AVERAGE SELLING PRICES
                                   (Unaudited)




                                                                  Three months ended            Six months ended
                                                                       June 30,                     June 30,
                                                                    2003 vs. 2004                2003 vs. 2004
                                                                   ----------------            ----------------

Percentage change in average selling prices:
                                                                                                   
    Using actual foreign currency exchange rates                              - %                        +2%
    Impact of changes in foreign currency exchange rates                     -5%                         -7%
                                                                        --------                    --------
    In billing currencies                                                    -5%                         -5%
                                                                        ========                    ========