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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Key value for chemical safety assessment

Additional information

A collection of the aquatic toxicity data and biodegradation in water is available for category members. All found values are listed below. 

EC number

Short-term toxicity to aquatic invertebrates

Toxicity to aquatic algae and cyanobacteria

Degradation

S1 - EC: 918-984-3

EC5048 h Daphnia magna: 45 mg/l

EC50 ca. 76 mg/L

 

readily biodegradable

S2 - EC: 927-837-2

The results obtained on the ecotoxicological endpoint "immobilisation" give an EC5048h superior to the highest tested concentration (i.e 100 mg/l), value expressed in mg/l of the nominal item concentration.

No sign of stress was observed on the daphnids during the 48 hours of the experiment.

ErC50= 136.6 mg/l (extrapolated value expressed in nominal concentration)

ErC50= 1.33 g/l (extrapolated value expressed in nominal concentration)

NOEC= 10.0 mg/l

LOEC = 100.0 mg/l

readily biodegradable

Overall, considering (i) aquatic toxicity values for invertebrates and algae and (ii) that the substances are readily biodegradable the registered substance is not expected to be toxic.