Bis(2-ethylhexyl) adipate or DEHA is an organic compound with the formula (CH<sub>2</sub>CH<sub>2</sub>CO<sub>2</sub>C<sub>8</sub>H<sub>17</sub>)<sub>2</sub>. It is the diester of 2-ethylhexanol and adipic acid. It is a colorless oily liquid.
DEHA is sometimes called "dioctyl adipate" or DOA, incorrectly. Another name is di(2-ethylhexyl) adipate. The abbreviation DOA has been used for both bis(-2-ethylhexyl)-adipate and dioctyl adipate
As well as related diesters derived from octanol, decanol, isodecanol, etc., it is used as a plasticizer.
DEHA is used as a hydraulic fluid, and a component of aircraft lubricants. It is sometimes also used as an ingredient in PVC-based plastic wrap.
DEHA has very low toxicity. The LD<sub>50</sub> is estimated at 900 mg/kg (rat, i.v.).
According to the International Agency for Research on Cancer (IARC), it is "not classifiable as to its carcinogenicity to humans (Group 3)."