Registration Dossier

Diss Factsheets

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

3 acute aquatic toxicity studies are available on 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctanesulphonic acid: a 96h acute toxicity study on fish (OECD 203), a 48h immobility study on water flea (OECD 202) and a growth inhibition study on a green alga (OECD 201). In all three studies (see below), no adverse effects were observed at the highest dose tested, which was always greater than 100 mg/L. Nonetheless, all these studies were performed on an aqueous solution containing 70% water and 30% active ingredient. As a result, the highest concentrations tested were below 50 mg/L when corrected for the level of active ingredient. Therefore, to support the assertion that 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctanesulphonic acid does not cause adverse effects on algae, aquatic invertebrates and fish up to concentrations of 100 mg/L, studies on the corresponding potassium salt of 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctanesulphonic acid were included. On this potassium salt, 3 acute aquatic studies were available (also on algae, aquatic invertebrates and fish) as well as an OECD 210, 90 day early life-stage study on rainbow trout.

Short-term toxicity to fish:

Oncorhynchus mykiss 96h LC50 >108 mg/L (highest concentration tested; > 32.4 mg/L corrected for 30% a.i.); OECD 203;

Oncorhynchus mykiss 96h LC50 >107 mg/L (highest concentration tested); OECD 203; Read across from similar substance;Long-term fish early-life stage toxicity:

Rainbow Trout 90 Day NOEC 2.62 mg/L (First day of hatching); OECD 210; Read across from similar substance;

Toxicity to aquatic algae and cyanobacteria:

Pseudokirchneriella subcapitata 72h ErC50 >125 mg/L (> 37.5 mg/L corrected for 30% a.i.); OECD 201;

Pseudokirchneriella subcapitata 72h ErC50 >96 mg/L; OECD 201; Read across from similar substance;

Short-term toxicity to aquatic invertebrates:

Daphnia magna 48h EC50 >112 mg/L (> 33.6 mg/L corrected for 30% a.i.); OECD 202

Daphnia magna 48h EC50 >109 mg/L; OECD 202; Read across from similar substance

Additional information

Based on the short and long-term studies conducted, fish is the most sensitive species.

Categories Display