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Dibutyl Phthalate

Medically reviewed by Last updated on Nov 6, 2023.

Excipient (pharmacologically inactive substance)

What is it?

Dibutyl phthalate (C16H22O4), or DBP, is an odorless and colorless to faint yellow oily liquid; the molecular weight is 278.35 g/mol. Dibutyl phthalate is also known as di-n-butyl phthalate. Dibutyl phthalate has various industrial uses; it is used to make flexible plastics that are found in a variety of consumer products. It appears to have relatively low acute (short-term) and chronic (long-term) toxicity. Due to concerns for toxicity, it is banned in children's toys in concentrations of 1000 ppm or greater.

List of medications using Dibutyl Phthalate


  1. [1]US EPA. Dibutyl phthalate. Accessed March 30, 2014.[]
  2. [2] Ingredient Glossary - Dibutyl Phthalate. Accessed March 30, 2014.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.