Di-n-hexyl Phthalate (DnHP)

Why am I being warned about potential exposure to DnHP?

  • DnHP is on the Proposition 65 list because it can cause birth defects or other reproductive harm
  • Exposure to DnHP may harm the male and female reproductive systems. 
  • Proposition 65 requires businesses to determine if they must provide a warning about exposures to listed chemicals.

What is DnHP?

  • DnHP is an oily liquid that belongs to a family of chemicals called phthalates, which are added to some plastics to make them flexible.
  • DnHP may be used in some vinyl products although its use has decreased.

How does exposure to DnHP occur?

  • DnHP can be gradually released from consumer products into indoor environments, such as homes and offices.  It settles on floors and other surfaces, and can accumulate in dust and air.
  • Exposure can result from contact with products containing DnHP.
  • During pregnancy, DnHP can pass from mother to baby.

How can I reduce my exposure to DnHP?

  • Avoid plastics known as polyvinyl chloride (PVC) or vinyl (with recycle code 3).
  • Minimize exposure to dust, which can contain DnHP:  
    • Wash your hands and your child’s hands frequently, especially before preparing food and eating.
    • Clean floors regularly, using a wet mop, and a vacuum with a high-efficiency particulate air (HEPA) filter, if possible.
    • Wipe up dust regularly, using a damp cloth.

For more information:

Scientific Information on DnHP

Proposition 65

  • California Environmental Protection Agency (CalEPA)
    Office of Environmental Health Hazard Assessment (OEHHA)
Posted September 2017

If you have any questions, comments, or concerns about the content of this page, please click here.

Sign-up for Email Updates

OEHHA is subject to the California Public Records Act and other laws that require the release of certain information upon request. If you sign up for a listserve, please be aware that your name and e-mail may be provided to third parties. By signing up you are waiving any right to privacy you may have in the information you provide.

Secretary of State - Register to Vote
CalFile - Free Online Tax Filing