EPA proposes TRI reporting for the diisononyl phthalate category

The EPA this week proposed a rule to add diisononyl phthalate as a category to the list of toxic chemicals subject to the reporting requirements under the Emergency Planning and Community Right to Know Act (EPCRA) and the Pollution Prevention Act. The EPA concluded that this category met the EPCRA toxicity criterion because it can reasonably be anticipated to cause cancer and serious or irreversible chronic health effects in humans. The proposed rule was published in the Federal Register on August 8, 2022.

What is DINP?

  • The diisononyl phthalate (DINP) category is a family of di-ester phthalates that are colorless, oily liquids with high boiling points, low volatilities, and are poorly soluble in water.
  • DINPs are used as plasticizers and in the production of coated fabrics, electrical insulation, and vinyl flooring. Multiple identifiers known as Chemical Abstracts Service (CAS) numbers are associated with DINPs. Two common CAS RNs associated with the category are: 28553-12-0 and 68515-48-0.

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