On December 20 2013, diisononyl phthalate (DINP) was added to California's list of chemicals known to cause cancer. California's Office of Environmental Health Hazard Assessment (OEHHA) maintains the list pursuant to the state's Safe Drinking Water and Toxic Enforcement Act – known as Proposition 65.
Under Proposition 65, no person in the course of doing business in California may knowingly expose any individual to a listed chemical without first providing a clear and reasonable warning.(1)The list of chemicals is updated often and new chemicals are added every year. The warning duty takes effect one year after a new chemical is listed.(2) The warning requirement for DINP will be in effect for exposures that occur on or after December 20 2014.
In its report, "Evidence on the Carcinogenicity of Diisononyl Phthalate", the OEHHA noted that DINP is primarily used as a general purpose plasticiser to increase softness, flexibility and elasticity in a wide variety of polyvinyl chloride (PVC) products, such as vinyl flooring, wire and cable insulation, stationery, coated fabrics, gloves, toys (where it was already restricted by law), tubing, garden hoses, artificial leather, footwear, automobile undercoatings and roofing materials, as well as non-PVC products such as rubbers, inks, pigments, paints, lacquers, adhesives and sealants.
The new listing could affect a wide range of businesses and industries. Other recent additions to the list resulted in a wave of private enforcement actions – first notice letters, as required under Proposition 65 and then lawsuits – shortly after the warning obligations for the newly listed chemicals took effect.
For example, tris(1,3-dichloro-2-propyl)phosphate, a foam flame retardant, was added to the list on October 28 2011. The first notice letter was issued less than one month after the warning obligation became effective and the first lawsuit was filed less than one month after expiration of the notice period. To date more than 250 notice of intent to sue letters have been issued and more than 200 lawsuits have been filed.
Titanium dioxide a chemical used in certain personal care products, was listed on September 2 2011 and the warning obligation became effective on September 2 2012. Since early 2013, more than 100 companies have received notice letters and been named in lawsuits.
Coconut oil diethanolamine condensate, used in some liquid soaps and shampoos, was listed on June 22 2012 and the warning obligation became effective on June 23 2013. To date, 39 notice letters have been issued and multiple lawsuits have already been filed.
Many companies can mitigate their exposure to Proposition 65 liability for newly listed chemicals by taking steps to review, investigate and reformulate their products in the 12 months before the warning obligation takes effect.
For further information on this topic please contact Amy Lally or Judith Praitis at Sidley Austin LLP by telephone (+1 213 896 6000), fax (+1 213 896 6600) or email (firstname.lastname@example.org or email@example.com). The Sidley website can be accessed at www.sidley.com.