Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

The substance 2-butyl-2-ethylpropanediol is stable to to hydrolysis, i.e. estimated half-life of greater than one year.

The substance 2-butyl-2-ethylpropanediol was not readily biodegradable (60 mg/L) in a study conducted to OECD 301F.

In a study conducted to guideline OECD 302B, the substance 2-butyl-2-ethylpropanediol was 79% biodegraded over 28 days (i.e.> 70%). The substance 2-butyl-2-ethylpropanediol is therefore considered inherently and ultimately biodegradable.

The logKow of 2-butyl-2-ethylpropanediol is reported to be 2.2 (see Section 4.7, partition coefficient). According to Column 2 of Annex IX of the REACH regulation, no study is required if the logKow is below the trigger of 3 as the substance can be expected to have a low potential for bioaccumulation.

Based on the logPow value (OECD 117, is 2.2), the substance 2-butyl-2-ethylpropanediol can be expected to have a low potential for adsorption. According to Column 2 of Annex VIII of the REACH regulation, no study is required if the logPow is below the trigger of 3 as the substance can be expected to have a low potential for adsorption.

In accordance with REACH Annex XI, based on available data, the substance is not classified as hazardous for the environment. Therefore degradation simulation testing in water and/or sediment and in soil does not need to be conducted.