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CAS 117-84-0

n-Dioctyl phthalate

Potential EDCVOC

n-Dioctyl phthalate (DnOP) is a phthalate plasticizer used to make soft, flexible vinyl (PVC). It can slowly escape from products into indoor air and dust, leading to low-level everyday exposure. [1][2]

Where It Comes From

PVC/vinyl products such as flooring, wire and cable coatings, garden hoses, shower curtains, and some adhesives/sealants; formerly in some toys. [1][3]

How You Are Exposed

Breathing indoor air and dust near vinyl items, touching or mouthing soft PVC, and workplace handling during manufacturing; most people have short‑lived DnOP metabolites in urine. [1][2]

Why It Matters

Human data are limited; in animals, high doses can affect the liver and may impact development/reproduction. Reducing avoidable exposure is prudent, especially for families. [1][2][4]

Who Is at Risk

Plastics and PVC workers, young children who mouth soft vinyl items, people with many vinyl products at home; those who are pregnant may wish to be extra cautious. [1][2]

How to Lower Your Exposure

Choose “phthalate‑free” or “PVC‑free” products, limit children’s mouthing of soft vinyl, wet‑dust and ventilate rooms with vinyl items, wash hands before eating, and follow workplace safety controls. [1][2][3]

References

  1. [1]ATSDR. ToxFAQs for Di-n-Octyl Phthalate (DnOP), CAS 117-84-0.
  2. [2]CDC. Biomonitoring Summary: Di-n-octyl phthalate (DnOP).
  3. [3]U.S. EPA. Phthalates Action Plan (and related EPA materials on phthalate uses/exposure).
  4. [4]NTP CERHR. Expert Panel Report/Monograph on the Potential Human Reproductive and Developmental Effects of Di-n-Octyl Phthalate (DnOP).

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