Di-isodecyl Phthalate (DIDP)

Why am I being warned about potential exposure to DIDP?

  • DIDP is on the Proposition 65 list because it can cause birth defects or other reproductive harm.
  • Exposure to DIDP during pregnancy may affect the development of the child.
  • Proposition 65 requires businesses to determine if they must provide a warning about exposures to listed chemicals.

What is DIDP?

  • DIDP belongs to a family of chemicals called phthalates, which are added to some plastics to make them flexible.
  • DIDP is used in various types of plastic consumer products, including:
    • Some polyvinyl chloride (PVC, vinyl) tubing, materials used in automobile interiors, garden hoses, raincoats, binders, storage cases, tile flooring, shower curtains, and bath mats.
  • California law prohibits the manufacture, sale, or distribution of toys and child care articles intended for the use of a child under 3 years old, if that product can be placed in the child’s mouth and it contains DIDP at levels greater than 0.1%.  US law currently has a similar prohibition.

How does exposure to DIDP occur?

  • DIDP can be gradually released from consumer products into indoor environments such as homes and cars. It settles on floors and other surfaces, and can accumulate in dust and air.
  • During pregnancy, DIDP can pass from mother to baby.

How can I reduce my exposure to DIDP?

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

For more information:

Scientific Information on DIDP

Proposition 65

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

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