Hexahydro-1,3,5-trimethyl-1,3,5-triazine

Biodegradation in water and sediment: simulation tests

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

biodegradation in water: simulation testing on ultimate degradation in surface water

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is readily biodegradable

Reference 2

Endpoint:

biodegradation in water: sediment simulation testing

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is readily biodegradable

Description of key information

No surface water or sediment degradation studies were conducted, so first order rate constants and half-lives for biodegradation in surface water and sediment were derived based on ready biodegradability results, in accordance with ECHA Guidance on Information Requirements and Chemical Safety Assessment, Chapter R.16.

Key value for chemical safety assessment

Half-life in freshwater:

15 d

at the temperature of:

12 °C

Half-life in marine water:

15 d

at the temperature of:

12 °C

Half-life in freshwater sediment:

300 d

at the temperature of:

12 °C

Half-life in marine water sediment:

300 d

at the temperature of:

12 °C

Additional information

As the substance is readily biodegradable, default half-lives for freshwater and sediment were concluded in accordance with ECHA Guidance on Information Requirements and Chemical Safety Assessment, Chapter R.16.