POWER OF ATTORNEY

	KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby
constitutes and appoints each of Brian William Bichkoff and
Stephanie Jane Pacitti, signing singly, as the undersigned?s
true and lawful authorized representatives and attorneys-in-fact to:

(1)	execute for and on behalf of the undersigned, in the
undersigned?s capacity as an executive officer of Stepan Company
(?the Company?), Forms 3, 4 and 5, and any and all amendments
thereto, in accordance with Section 16 of the Securities Exchange
Act of 1934, as amended (the ?1934 Act?), and the rules and
regulations promulgated thereunder;

(2)	do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete the
execution of any such form or schedule and the timely filing of
such form or schedule with the United States Securities and Exchange
Commission and any stock exchange or stock market or other authority; and

(3)	take any other action of any type whatsoever in connection with
the foregoing which, in the opinion of such attorneys-in-fact, may be of
benefit to, in the best interest of, or legally required by, the
undersigned, it being understood that the documents executed by such
attorneys-in-fact on behalf of the undersigned pursuant to this Power of
Attorney shall be in such form and shall contain such terms and
conditions as such attorneys-in-fact may approve in such attorneys-
in-fact?s discretion.

	The undersigned hereby grants to each such attorney-in-fact full
power and authority to do and perform all and every act and thing
whatsoever requisite, necessary or proper to be done in the exercise of
any of the rights and powers herein granted, as fully to all intents and
purposes as the undersigned might or could do if personally present, with
full power of substitution or revocation, hereby ratifying and confirming
all that such attorneys-in-fact, or such attorneys-in-fact?s substitute
or substitutes, shall lawfully do or cause to be done by virtue of this
power of attorney and the rights and powers herein granted.  The undersigned
acknowledges that the foregoing attorneys-in-fact, in serving in such
capacity at the request of the undersigned, are not assuming, nor is the
Company assuming any of the undersigned?s responsibilities to comply with
Section 16 or any other provision of the 1934 Act.

	This Power of Attorney shall remain in full force and effect until
the undersigned is no longer required to file Forms 3, 4 and 5 with respect
to the undersigned?s holdings of and transactions in securities issued by
the Company, unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact.

	IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 7th day of December, 2018.


/s/ Debra Stefaniak
Debra Stefaniak