Butyl benzoate

Toxicity to terrestrial plants

Administrative data

Endpoint:

toxicity to terrestrial plants: short-term

Data waiving:

exposure considerations

Justification for data waiving:

the study does not need to be conducted because direct and indirect exposure of the soil compartment is unlikely

other:

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING
No terrestrial toxicity data is available for the test substance. The PECsoil and PNECsoil were estimated. A PNECsoil was derived using the equilibrium partitioning Method (EPM). A PECsoil was calculated, assuming realistic concentrations of butyl benzoate in a pesticide formulation.
The PECsoil was well below the PNECsoil (PECsoil/PNECsoil << 1). Safety factors for the terrestrial environment are generous, no additional data should be required.
Butyl benzoate is readily biodegradable, has a low potential for bioaccumulation (Log Kow = 3.3, Log BCF 2.2; per dossier) and is rapidly metabolized to innocuous substances (i.e., benzoic acid and corresponding alcohol, butanol) and excreted within 24 hours (Becker et al., 2012), and does not have a high potential to adsorb to soil (Log Koc 2.1 per dossier). Therefore, the equilibrium partitioning method has been used to assess the hazard to soil organisms as allowed according to Column 2 'Specific Rules for Adaptation' in Annex IX.

References:
Annex IX data requirements stipulated in Regulation (EC) No 1907/2006
TGD on risk assessment, part II, Chapter 3, section 3.6.2.1, p 117
ECHA (2008). Guidance of Information Requirements and Chemical Safety Assessment, Chapter R.10: Characterizations of dose-response for environment. Endpoint specific guidance R.7c (Table R.7.11—2 Soil hazard categories and screening assessment (for waiving standard information requirements according to Annex IX and X).