Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Biodegradation in water

The submission substance is readily biodegradable as demonstrated in OECD TG 301 B.

Biodegradation in surface water: simulation test

Data waiving in accordance with column 2 of REACH Annexes IX and X.

Biodegradation in sediment: simulation tests

Data waiving in accordance with column 2 of REACH Annexes IX and X.

Biodegradation in soil: simulation tests

Data waiving in accordance with column 2 of REACH Annexes IX and X.

Identification of degradation products

Data waiving in accordance with column 2 of REACH Annexes IX and X.

Additional information

Biodegradation in water

The ready biodegradability of 1,3 -butanediol was studied in a Modfied Sturm Test following OECD 301B. The test substance was degraded to 81% (CO2/ThCO2) after 29 days. The 10 -days window was met. The validity criteria were fulfilled. 1,3 -Butanediol is readily biodegradable according to OECD criteria (Barnes, 2000).

Simulation tests:

No data on degradation in soil and in water/sediment simulation tests are available (not necessary for REACH, since substance is readily biodegradable).