California’s Office of Environmental Health Hazard Assessment (OEHHA has approved a request for a Safe Use Determination (SUD) for diisononyl phthalate (DINP) in Phifertex® fabric used in outdoor furniture products.
The request was made by McKenna Long & Aldridge (MLA) LLP, on behalf of the manufacturer Phifer Inc.
The products covered by the request are Phifertex® fabrics containing up to 25 percent DINP, when used in outdoor furniture products.
The agency held a written public comment period on this request from February 13 to March 30, 2015. OEHHA also held a public hearing on March 30, 2015, in Sacramento, California. No public comments were received.
Based on the screening level exposure analysis described in the supporting documentation, an upper-end estimate was made of DINP exposure from Phifertex® fabric containing up to 25% DINP for users of outdoor furniture products made with this fabric.
The upper-end estimate of DINP exposure, 52.1 micrograms per day (µg/day), was compared to the No Significant Risk Level (NRSL) for DINP of 146 µg/day. Based on this comparison, the estimated exposure to DINP from Phifertex® fabric containing up to 25% DINP for users of outdoor furniture products made with this fabric is below the NSRL and corresponds to an excess cancer risk of less than one in 100,000. A warning is not required for consumer exposure to DINP from Phifertex® fabric containing up to 25% DINP used in outdoor furniture products.
On December 30, OEHHA approved and issued a related Safe Use Determination for DINP exposures to professional vinyl flooring installers from vinyl flooring products containing 8.7percent DINP by weight, or less.
The agency has now issued five SUDs for products containing DINP since the listing of the chemical took effect on December 20, 2014.