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Announcement of the Carcinogen Identification Committee Meeting Scheduled for December 5, 2013 and the Availability of Hazard Identification Documents for Butyl Benzyl Phthalate and Diisononyl Phthalate

The California Environmental Protection Agency’s Office of Environmental Health Hazard Assessment (OEHHA) is the lead agency for the implementation of the Safe Drinking Water and Toxic Enforcement Act of 19861 (Proposition 65).  The Carcinogen Identification Committee (CIC) advises and assists OEHHA in compiling the list of chemicals known to the State to cause cancer as required by Health and Safety Code section 25249.8.  The Committee serves as the State’s qualified experts for determining whether a chemical has been clearly shown through scientifically valid testing according to generally accepted principles to cause cancer.

Butyl benzyl phthalate and diisononyl phthalate will be considered for possible listing by the CIC at its next meeting scheduled for Thursday, December 5, 2013.  The meeting will be held in the Coastal Hearing Room at the Cal/EPA Headquarters building, 1001 I Street, Sacramento, California.  The meeting will begin at 10:00 a.m. and will last until all business is conducted or until 5:00 p.m.  The agenda for the meeting will be provided in a future public notice published in advance of the meeting.

OEHHA announces the availability for public review of the documents entitled:  “Evidence on the Carcinogenicity of Butyl Benzyl Phthalate” and “Evidence on the Carcinogenicity of Diisononyl Phthalate.”  The CIC will consider these documents in making any listing decisions on these chemicals.  In preparing these hazard identification documents, OEHHA considered information received from its requests for information relevant to the evidence of carcinogenicity of butyl benzyl phthalate and diisononyl phthalate.  The data call-in period for butyl benzyl phthalate opened on November 23, 2012 and closed on January 22, 2013.  The data call-in period for diisononyl phthalate opened October 16, 2009 and closed on February 16, 2010.

Copies of the documents are available from OEHHA’s web site. The documents may also be requested from OEHHA’s Proposition 65 Implementation Office by calling (916) 445-6900. 

This notice marks the beginning of a 45-day public comment period on these two documents.  OEHHA must receive comments and any supporting documentation by 5:00 p.m. on Monday, November 18, 2013.  We encourage you to submit comments in electronic form, rather than in paper form.  Comments transmitted by e-mail should be addressed to  Please include “HID – BBP” or “HID – DINP” in the subject line.  Comments submitted in paper form may be mailed, faxed, or delivered in person to the addresses below:

Mailing Address:     
Sam Delson
Office of Environmental Health Hazard Assessment
P.O. Box 4010, MS-19B
Sacramento, California 95812-4010

Street Address:      
1001 I Street
Sacramento, California 95814
Fax:  (916) 323-2265

OEHHA will organize and index the comments received and forward the information to the CIC members prior to the meeting at which the chemicals will be considered.  Comments will also be posted on the OEHHA web site in advanc

1 Health and Safety Code section 25249.5 et seq.

Index of Comments Submitted on the Chemicals to be Considered by the Carcinogen Identification Committee on December 5, 2013





Michael L. Cunningham, Ph.D., DABT, ATS

Diisononyl phthalate


Nina Hallmark, Ph.D.
Oxo Advocacy Lead, Americas ExxonMobil Chemical Company

Diisononyl phthalate



Eileen Conneely, J.D., M.P.H. Director
Chemical Products & Technology Division American Chemistry Council

Diisononyl phthalate


Tim Zacharewski, Ph.D. Michigan State University
Department of Biochemistry & Molecular Biology Center for Integrative Toxicology

Diisononyl phthalate


Robert E. Raymer, PE
Senior Engineer/Technical Director California Building Industry Association

Diisononyl phthalate


Stanley Landfair
On behalf of BASF Corporation McKenna Long & Aldridge LLP

Diisononyl phthalate


Michael J. Rogge
Policy Director, Environmental Quality
California Manufacturers & Technology Association

Diisononyl phthalate


James E. Klaunig, Ph.D. Fellow ATS, Fellow IATP
Professor, Environmental Health
Professor, School of Public and Environmental Affairs Indiana University

Diisononyl phthalate


Ann Claassen
On behalf of Ferro Corporation Latham & Watkins LLP

Butyl benzyl phthalate


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