EXHIBIT 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned officer or director of Texas Petrochemicals Corporation, a Texas corporation (the "Company"), hereby constitutes and appoints Stephen R. Wright and Claude E. Manning, and each of them (with full power to each of them to act alone), the undersigned's true and lawful attorney-in-fact and agent, for the undersigned and on the undersigned's behalf and in the undersigned's name, place and stead, in any and all capacities, to sign, execute and file with the Securities and Exchange Commission the Company's Registration Statement on Form S-4 (or other appropriate form), together with all amendments thereto, with all exhibits and any and all documents required to be filed with respect thereto with any regulatory authority, granting unto said attorneys, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises in order to effectuate the same as fully to all intents and purposes as the undersigned might or could do if personally present, hereby ratifying and confirming all that said attorneys-in-fact and agents, or either of them, may lawfully do or cause to be done by virtue thereof. IN WITNESS WHEREOF, the undersigned has hereto signed this power of attorney this 27th day of March, 1997. /s/ WILLIAM A. MCMINN William A. McMinn POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned officer or director of Texas Petrochemicals Corporation, a Texas corporation (the "Company"), hereby constitutes and appoints Stephen R. Wright and Claude E. Manning, and each of them (with full power to each of them to act alone), the undersigned's true and lawful attorney-in-fact and agent, for the undersigned and on the undersigned's behalf and in the undersigned's name, place and stead, in any and all capacities, to sign, execute and file with the Securities and Exchange Commission the Company's Registration Statement on Form S-4 (or other appropriate form), together with all amendments thereto, with all exhibits and any and all documents required to be filed with respect thereto with any regulatory authority, granting unto said attorneys, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises in order to effectuate the same as fully to all intents and purposes as the undersigned might or could do if personally present, hereby ratifying and confirming all that said attorneys-in-fact and agents, or either of them, may lawfully do or cause to be done by virtue thereof. IN WITNESS WHEREOF, the undersigned has hereto signed this power of attorney this 31st day of March, 1997. /s/ GORDON A. CAIN Gordon A. Cain POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned officer or director of Texas Petrochemicals Corporation, a Texas corporation (the "Company"), hereby constitutes and appoints Stephen R. Wright and Claude E. Manning, and each of them (with full power to each of them to act alone), the undersigned's true and lawful attorney-in-fact and agent, for the undersigned and on the undersigned's behalf and in the undersigned's name, place and stead, in any and all capacities, to sign, execute and file with the Securities and Exchange Commission the Company's Registration Statement on Form S-4 (or other appropriate form), together with all amendments thereto, with all exhibits and any and all documents required to be filed with respect thereto with any regulatory authority, granting unto said attorneys, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises in order to effectuate the same as fully to all intents and purposes as the undersigned might or could do if personally present, hereby ratifying and confirming all that said attorneys-in-fact and agents, or either of them, may lawfully do or cause to be done by virtue thereof. IN WITNESS WHEREOF, the undersigned has hereto signed this power of attorney this 31st day of March, 1997. /s/ JAMES J. COLLIS James J. Collis POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned officer or director of Texas Petrochemicals Corporation, a Texas corporation (the "Company"), hereby constitutes and appoints Stephen R. Wright and Claude E. Manning, and each of them (with full power to each of them to act alone), the undersigned's true and lawful attorney-in-fact and agent, for the undersigned and on the undersigned's behalf and in the undersigned's name, place and stead, in any and all capacities, to sign, execute and file with the Securities and Exchange Commission the Company's Registration Statement on Form S-4 (or other appropriate form), together with all amendments thereto, with all exhibits and any and all documents required to be filed with respect thereto with any regulatory authority, granting unto said attorneys, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises in order to effectuate the same as fully to all intents and purposes as the undersigned might or could do if personally present, hereby ratifying and confirming all that said attorneys-in-fact and agents, or either of them, may lawfully do or cause to be done by virtue thereof. IN WITNESS WHEREOF, the undersigned has hereto signed this power of attorney this 31st day of March, 1997. /s/ WILLIAM R. HUFF William R. Huff POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned officer or director of Texas Petrochemicals Corporation, a Texas corporation (the "Company"), hereby constitutes and appoints Stephen R. Wright and Claude E. Manning, and each of them (with full power to each of them to act alone), the undersigned's true and lawful attorney-in-fact and agent, for the undersigned and on the undersigned's behalf and in the undersigned's name, place and stead, in any and all capacities, to sign, execute and file with the Securities and Exchange Commission the Company's Registration Statement on Form S-4 (or other appropriate form), together with all amendments thereto, with all exhibits and any and all documents required to be filed with respect thereto with any regulatory authority, granting unto said attorneys, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises in order to effectuate the same as fully to all intents and purposes as the undersigned might or could do if personally present, hereby ratifying and confirming all that said attorneys-in-fact and agents, or either of them, may lawfully do or cause to be done by virtue thereof. IN WITNESS WHEREOF, the undersigned has hereto signed this power of attorney this 31st day of March, 1997. /s/ JOHN T. SHELTON John T. Shelton POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned officer or director of Texas Petrochemicals Corporation, a Texas corporation (the "Company"), hereby constitutes and appoints Stephen R. Wright and Claude E. Manning, and each of them (with full power to each of them to act alone), the undersigned's true and lawful attorney-in-fact and agent, for the undersigned and on the undersigned's behalf and in the undersigned's name, place and stead, in any and all capacities, to sign, execute and file with the Securities and Exchange Commission the Company's Registration Statement on Form S-4 (or other appropriate form), together with all amendments thereto, with all exhibits and any and all documents required to be filed with respect thereto with any regulatory authority, granting unto said attorneys, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises in order to effectuate the same as fully to all intents and purposes as the undersigned might or could do if personally present, hereby ratifying and confirming all that said attorneys-in-fact and agents, or either of them, may lawfully do or cause to be done by virtue thereof. IN WITNESS WHEREOF, the undersigned has hereto signed this power of attorney this 26th day of March, 1997. /s/ SUSAN O. RHENEY Susan O. Rheney