Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Biodegradation in water

The biodegradability was investigated according to OECD Guideline 301B (BASF SE, 2013) and OECD Guideline 301D (Drake, 2011) in two different experiments. The Closed Bottle Test (OECD 301D) analyses the dissolved oxygen concentration in the inoculum. After 28 days, 61 % degradation was measured in this case. Hence the substance is assigned as readily biodegradable.

 

For the CO2 Evolution Test (OECD 301B), a Total Organic Carbon (TOC) Analyser was used in order to determine the Total Inorganic Carbon (TIC) as well as the Dissolved Oxygen Carbon (DOC). CO2 production is the indicator concerning biodegradation. Although Butylaminoethanol attained 70 - 80 % degradation, the 10-day window was slightly missed based on the mean biodegradation values of both replicates TS1 and TS2. However, the substance clearly met the criteria for ready biodegradability of chemicals according to the OECD criteria in TS 1 (10-d window: >/=10%: day 11, >/=60%: day 21). The same evaluation applies to TS2 (10-d window: >/=10%: day 7, >/=60%: day 17/18).

 

Furthermore, a QSAR result (BIOWIN v4.10 by US-EPA, Chemservice S.A., 2018) supports the information given by the experimental results.

 

As conclusion, Butylaminoethanol is considered to be readily biodegradable.

 

Biodegradation in water and sediment and in soil

 

Experimental investigations are not intended since Butylaminoethanol was found to be readily biodegradable. The endpoints concerning biodegradation in "water and sediment" as well as in "soil" can be waived in accordance to REACH, Annex IX, Section 9.2.1.2, column 2 (water), REACH, Annex IX, Section 9.2.1.4, column 2 (sediment) and REACH, Annex IX, Section 9.2.1.3, column 2 (soil), respectively.