Registration Dossier

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Phototransformation in air

After evaporation or exposure to the air, isobutyl acrylate will be rapidly degraded by photochemical processes. The calculated half-life for a 24-hr day and 0.5E+06 OH/cm3 is 27.98 hr.


The study does not need to be conducted because the subtance is readily biodegradable (study scientifically not necessary). Nevertheless, a QSAR estimate was conducted. Isobutyl acrylate was predicted contact to hydrolyse slowly

if in contact with water. The calculated half-life at pH 7 and 25 °C is 16.5 years.

Additional information

According to Q(SAR) data using SRC AOP, isobutyl acrylate will be rapildy degraded by photochemical processes after exposure to the air reacting with the photochemically produced hydroxyl radicals and with ozone (calculated half-life for a 24-hour day and 0.5E06 OH/cm3: 27.98 hours; for a 24-hour day and 7E11 O3/cm3: 6.55 days) (BASF SE, 2008).