Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Biodegradation

Biodegradation in water: screening test (Weight of Evidence approach)

2-Propenoic acid, C16-18-alkyl esters (read across)

In the Ready Biodegradability (CO2-Evolution) Test the degree of biodegradation of the test substance at the end of exposure was determined to be 50-60 % CO2/ThCO2.

 

Dodecyl acrylate (C12) (read across)

The degree of biodegradation of the test substance was 80-90 %CO2/ThCO2 after an exposure period of 28 days.The read across substance (mixture of CAS no. 2156-97-0 and 21643-42-5) is readily biodegradable under the conditions of this test.

 

Icosyl acrylate (C20) (read across)

The degree of biodegradation of the test substance was 60-70 %CO2/ThCO2 after an exposure period of 60 days.The test item was biodegradable under the enhanced test conditions of this test.

2 -Propylheptyl acrylate is considered to be readily biodegradable (60 -70%).

2 -ethylhexyl acrylate is readily biodegradable according to OECD criteria (70 -80%).

 

Conclusion

Considering the results of the biodegradation studies with Dodecyl acrylate/ Laurylacrylate (C12), 2-Propenoic acid, C16-18-alkyl esters.

Biodegradation in water and sediment: simulations test

In accordance with column 2 of REACH Regulation (EC) No 1907/2006, Annex IX, section 9.2.1.2 and section 9.2.1.4, no study on biodegradation in water and sediment needs to be conducted if the test substance is biodegradable under test conditions. The long-chain alkylsters (C12 - C14) are all readily biodegradable under test conditions. Thus no futher biodegradation testing in water and sediment is required.

Biodegradation in soil

In accordance with column 2 of REACH Regulation (EC) No 1907/2006, Annex IX, section 9.2.1.3, no study on biodegradation in soil needs to be conducted if the test substance is biodegradable under test conditions. The long-chain alkylsters (C12 - C14) are all readily biodegradable under test conditions. Thus no futher biodegradation testing in soil is required.