EXHIBIT 24.2

                        ARCO CHEMICAL TECHNOLOGY, INC.

                               POWER OF ATTORNEY

          WHEREAS, ARCO CHEMICAL TECHNOLOGY, INC., a Delaware corporation (the
"Company"), an indirect wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with Lyondell's proposal to offer to
exchange up to $393,000,000 aggregate principal amount of 9 1/2% Senior Secured
Notes due 2008, registered under the Act and guaranteed by the Company, for like
aggregate principal amounts of outstanding 9 1/2% Senior Secured Notes due 2008
issued by Lyondell and guaranteed by the Company.

          NOW, THEREFORE, the undersigned, in his or her capacity as a director
or officer, or both, as the case may be, of the Company, does hereby appoint
Kerry A. Galvin and Robert T. Blakely, and each of them severally, his or her
true and lawful attorneys or attorney with power to act with or without the
others and with full power of substitution and resubstitution, to execute in his
or her name, place and stead, in his or her capacity as a director or officer or
both, as the case may be, of the Company, the Registration Statement and all
instruments necessary or incidental in connection therewith, with such amendment
or amendments thereto in each case as may be necessary or appropriate, together
with any and all exhibits and other documents relating thereto as said attorneys
or any of them shall deem necessary or incidental in connection therewith, and
to file the same or cause the same to be filed with the Commission.  Each of
said attorneys shall have full power and authority to do and perform in the name
and on behalf of the undersigned, in any and all capacities, every act
whatsoever necessary or desirable to be done to the premises, as fully and to
all intents and purposes as the undersigned might or could do in person, the
undersigned hereby ratifying and approving the acts of said attorneys and each
of them.

          IN WITNESS WHEREOF, the undersigned has executed this instrument on
this 10th day of January, 2002.



                                    /s/ FRANCIS P. MCGRAIL
                                    ---------------------------
                                    FRANCIS P. MCGRAIL


                                                                    EXHIBIT 24.2

                        ARCO CHEMICAL TECHNOLOGY, INC.

                               POWER OF ATTORNEY

          WHEREAS, ARCO CHEMICAL TECHNOLOGY, INC., a Delaware corporation (the
"Company"), an indirect wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with Lyondell's proposal to offer to
exchange up to $393,000,000 aggregate principal amount of 9 1/2% Senior Secured
Notes due 2008, registered under the Act and guaranteed by the Company, for like
aggregate principal amounts of outstanding 9 1/2% Senior Secured Notes due 2008
issued by Lyondell and guaranteed by the Company.

          NOW, THEREFORE, the undersigned, in his or her capacity as a director
or officer, or both, as the case may be, of the Company, does hereby appoint
Kerry A. Galvin and Robert T. Blakely, and each of them severally, his or her
true and lawful attorneys or attorney with power to act with or without the
others and with full power of substitution and resubstitution, to execute in his
or her name, place and stead, in his or her capacity as a director or officer or
both, as the case may be, of the Company, the Registration Statement and all
instruments necessary or incidental in connection therewith, with such amendment
or amendments thereto in each case as may be necessary or appropriate, together
with any and all exhibits and other documents relating thereto as said attorneys
or any of them shall deem necessary or incidental in connection therewith, and
to file the same or cause the same to be filed with the Commission.  Each of
said attorneys shall have full power and authority to do and perform in the name
and on behalf of the undersigned, in any and all capacities, every act
whatsoever necessary or desirable to be done to the premises, as fully and to
all intents and purposes as the undersigned might or could do in person, the
undersigned hereby ratifying and approving the acts of said attorneys and each
of them.

          IN WITNESS WHEREOF, the undersigned has executed this instrument on
this 10th day of January, 2002.



                                    /s/ EVA CHU
                                    -------------------------
                                    EVA CHU


                                                                    EXHIBIT 24.2

                        ARCO CHEMICAL TECHNOLOGY, INC.

                               POWER OF ATTORNEY

          WHEREAS, ARCO CHEMICAL TECHNOLOGY, INC., a Delaware corporation (the
"Company"), an indirect wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with Lyondell's proposal to offer to
exchange up to $393,000,000 aggregate principal amount of 9 1/2% Senior Secured
Notes due 2008, registered under the Act and guaranteed by the Company, for like
aggregate principal amounts of outstanding 9 1/2% Senior Secured Notes due 2008
issued by Lyondell and guaranteed by the Company.

          NOW, THEREFORE, the undersigned, in his or her capacity as a director
or officer, or both, as the case may be, of the Company, does hereby appoint
Kerry A. Galvin and Robert T. Blakely, and each of them severally, his or her
true and lawful attorneys or attorney with power to act with or without the
others and with full power of substitution and resubstitution, to execute in his
or her name, place and stead, in his or her capacity as a director or officer or
both, as the case may be, of the Company, the Registration Statement and all
instruments necessary or incidental in connection therewith, with such amendment
or amendments thereto in each case as may be necessary or appropriate, together
with any and all exhibits and other documents relating thereto as said attorneys
or any of them shall deem necessary or incidental in connection therewith, and
to file the same or cause the same to be filed with the Commission.  Each of
said attorneys shall have full power and authority to do and perform in the name
and on behalf of the undersigned, in any and all capacities, every act
whatsoever necessary or desirable to be done to the premises, as fully and to
all intents and purposes as the undersigned might or could do in person, the
undersigned hereby ratifying and approving the acts of said attorneys and each
of them.

          IN WITNESS WHEREOF, the undersigned has executed this instrument on
this 10th day of January, 2002.



                                    /s/ LAURA C. FULTON
                                    ----------------------------
                                    LAURA C. FULTON


                                                                    EXHIBIT 24.2

                        ARCO CHEMICAL TECHNOLOGY, INC.

                               POWER OF ATTORNEY

          WHEREAS, ARCO CHEMICAL TECHNOLOGY, INC., a Delaware corporation (the
"Company"), an indirect wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with Lyondell's proposal to offer to
exchange up to $393,000,000 aggregate principal amount of 9 1/2% Senior Secured
Notes due 2008, registered under the Act and guaranteed by the Company, for like
aggregate principal amounts of outstanding 9 1/2% Senior Secured Notes due 2008
issued by Lyondell and guaranteed by the Company.

          NOW, THEREFORE, the undersigned, in his or her capacity as a director
or officer, or both, as the case may be, of the Company, does hereby appoint
Kerry A. Galvin and Robert T. Blakely, and each of them severally, his or her
true and lawful attorneys or attorney with power to act with or without the
others and with full power of substitution and resubstitution, to execute in his
or her name, place and stead, in his or her capacity as a director or officer or
both, as the case may be, of the Company, the Registration Statement and all
instruments necessary or incidental in connection therewith, with such amendment
or amendments thereto in each case as may be necessary or appropriate, together
with any and all exhibits and other documents relating thereto as said attorneys
or any of them shall deem necessary or incidental in connection therewith, and
to file the same or cause the same to be filed with the Commission.  Each of
said attorneys shall have full power and authority to do and perform in the name
and on behalf of the undersigned, in any and all capacities, every act
whatsoever necessary or desirable to be done to the premises, as fully and to
all intents and purposes as the undersigned might or could do in person, the
undersigned hereby ratifying and approving the acts of said attorneys and each
of them.

          IN WITNESS WHEREOF, the undersigned has executed this instrument on
this 10th day of January, 2002.



                                    /s/ CHARLES L. HALL
                                    -----------------------------
                                    CHARLES L. HALL


                                                                    EXHIBIT 24.2

                        ARCO CHEMICAL TECHNOLOGY, INC.

                               POWER OF ATTORNEY

          WHEREAS, ARCO CHEMICAL TECHNOLOGY, INC., a Delaware corporation (the
"Company"), an indirect wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with Lyondell's proposal to offer to
exchange up to $393,000,000 aggregate principal amount of 9 1/2% Senior Secured
Notes due 2008, registered under the Act and guaranteed by the Company, for like
aggregate principal amounts of outstanding 9 1/2% Senior Secured Notes due 2008
issued by Lyondell and guaranteed by the Company.

          NOW, THEREFORE, the undersigned, in his or her capacity as a director
or officer, or both, as the case may be, of the Company, does hereby appoint
Kerry A. Galvin and Robert T. Blakely, and each of them severally, his or her
true and lawful attorneys or attorney with power to act with or without the
others and with full power of substitution and resubstitution, to execute in his
or her name, place and stead, in his or her capacity as a director or officer or
both, as the case may be, of the Company, the Registration Statement and all
instruments necessary or incidental in connection therewith, with such amendment
or amendments thereto in each case as may be necessary or appropriate, together
with any and all exhibits and other documents relating thereto as said attorneys
or any of them shall deem necessary or incidental in connection therewith, and
to file the same or cause the same to be filed with the Commission.  Each of
said attorneys shall have full power and authority to do and perform in the name
and on behalf of the undersigned, in any and all capacities, every act
whatsoever necessary or desirable to be done to the premises, as fully and to
all intents and purposes as the undersigned might or could do in person, the
undersigned hereby ratifying and approving the acts of said attorneys and each
of them.

          IN WITNESS WHEREOF, the undersigned has executed this instrument on
this 10th day of January, 2002.


                                    /s/ DAVID J. PRILUTSKI
                                    ------------------------------------
                                    DAVID J. PRILUTSKI