Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Fish acute

The 96-hour LC50 to Fathead Minnow was calculated to be 4.87 mg C12-18 AAPHS /L (2.12 mg active ingredient/L), and is considered appropriate for read-across purposes to C12 -14 AAPHS.

Daphnia acute
The 48 h EC50 of 9.3 mg test item/L (4.0 mg C12-18 AAPHS /L) was derived by graphical means. The corresponding NOEC was estimated to be 2.2 mg test item/L. This endpoint is considered appropriate for read-across purposes to C12 -14 AAPHS.

Daphnia reproduction
The 21-day NOEC (survival and reproduction) was found to be 2.9 mg/L (corresponding to 1.05 mg C8 -18 AAPHS /L) (based on mean measured concentrations) and is considered appropriate for read-across purposes to C12 -14 AAPHS.

Algae
The 72-hour EC50 of the test item was determined to be 5.38 mg test item/L (2.26 mg C8-18 AAPHS /L). The 72-hour NOEC (highest concentration tested without toxic effects after the test period of 72 hours) of the test item was determined to be 1.80 mg test item/L (0.76 mg C8-18 AAPHS /L). These endpoints are considered appropriate for read-across purposes to C12 -14 AAPHS.

Microorganisms
The source substance, C8 -18 AAPHS, has no inhibitory effect on the respiration rate of activated sludge after the incubation period of three hours up to and including the test concentration of 2762 mg test item/L, corresponding to 1000 mg C8-18 AAPHS /L. The 3h EC50 is therefore >1000 mg C8-18 AAPHS /L and is considered appropriate for read-across purposes to C12 -14 AAPHS.

Additional information