Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

Short term toxicity to fish

A reliable 96h LC50 value of 5.7 mg/L has been determined for the effects of nonan-1-ol on mortality of the fish Pimephales promelas. This study represent the lowest reliable value available for this endpoint on nonanol and has been chosen as key.

Long term toxicity to fish

In accordance with Column 2 of REACH Annex IX, the long-term aquatic toxicity to fish study (required in Section 9.1.6) does not need to be conducted as the chemical safety assessment according to Annex I indicates that this is not necessary.

Short term toxicity to daphnia

A 96 h EC50 of 25 mg/L has been determined for the effects of nonan-1-ol on immobility of the brackish invertebrate N. spinipes. This represents the only reliable value available for this endpoint and has been chosen as key.

Long term toxicity to daphnia

A long term toxicity to invertebrates NOEC has been estimated by equilibrium partitioning to be 0.4 mg/L, as a most conservative value. This result has been obtained by a valid QSAR and has been selected as key study.

Toxicity to algae

An EC50 value in the range 1-10 mg/L has been estimated for the effects of nonan-1-ol on algal growth. The estimate is based on expert judgement, which takes into consideration measured and predicted ecotoxicity values for other trophic levels and the relative susceptibility of algae compared to such trophic levels, in the same substance category.

Toxicity to microorganisms

In waste-water treatment plant micro-organisms, nonan-1-ol does not cause inhibition at the limit of water solubility. In view of the ready biodegradability, further information is not required in REACH.

Long-term sediment toxicity

In accordance with Column 2 of REACH Annex X, long-term toxicity testing with sediment organisms (required in Section 9.5.1) is not needed as the chemical safety assessment according to Annex I indicates that this is not necessary.