Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Stability in the environment

The half-life in air was predicted with AOPWIN v1.92 and resulted in a time duration of about 1.4 hours (Chemservice S.A., 2018). No specific reaction mechanism (i.e. with ozone or nitrate radicals) is relevant for Butylaminoethanol.

Based on the chemical structure, Butylaminoethanol will not undergo hydrolytical reactions in the environment.

Biodegradation

Butylaminoethanol was found to be readily biodegradable according to OECD Guideline 301D (Closed Bottle Test; Drake, 2011). Based on results of a CO2Evolution Test (OECD 301B), performed by BASF SE the substance was also readily biodegradable, but failing the 10-day window criterion based on the mean biodegradation values of the replicates. However, the substance met the criteria for ready biodegradability in the individual assays (BASF SE, 2013). The experimental findings are supported by the prediction with BIOWIN v4.10 (Chemservice S.A., 2018). It is concluded that Butylaminoethanol is readily biodegradable.

Bioaccumulation

The Bioconcentration Factor (BCF) of Butylaminoethanol was predicted as 3.162 L/kg using BCFBAFWIN v3.00 (Chemservice S.A., 2017). Thus, bioaccumulation in aquatic organisms is not expected. The low bioaccumulative potential of Butylaminoethanol is also indicated by the measured low logPow, which amounts to 0.64 (BASF AG, 1993).

Transport and distribution

QSAR predictions were used to calculate the Koc in soil as well as the HLC (Henry´s Law constant) of Butylaminoethanol (Chemservice S.A., 2017). The MCI method of KOCWIN v2.00 revealed a value of 7.887 L/kg, thus indicating a strong binding capacity towards organic soil particles.

The HLC is predicted for 25 °C. The Group Method revealed a value of 6.08 E-005 Pa*m³/mol, the Bond Method resulted in 1.91 E-004 Pa*m³/mol.