2-Propenoic acid, polymer with 2,2-bis(hydroxymethyl)-1,3-propanediol, 2-methyloxirane and oxirane

Endpoint summary

Additional information

Acute toxicity data of a structural and functional analogue (Pentaerythritol, ethoxylated, esters with acrylic acid; EC N. 500-111-9/CAS N. 51728-26) of the test substance are available for all four freshwater aquatic trophic levels (fish, aquatic invertebrates and algae). These data were used to fill by read-across the ecotoxicity endpoints of the test item dossier. In order to validate this read-across, a short-term toxicity test with the same species (Danio rerio) than for the analogue was performed.

Freshwater fish:

96h-LC₅₀ values for Danio rerio were determined to be

7.9 mg/L for the test item,

1.76 mg/L for the analogue.

Freshwater invertebrates:

48h-EC₅₀ value for Daphnia magna was determined to be 90.94 mg/L for the analogue.

Freshwater algae:

72h-EC₅₀ value based on growth rate for Pseudokirchneriella subcapitata was determined to be higher than the highest concentration tested (100 mg/L) for the analogue.

Aerobic microorganisms:

3h-EC₅₀value based on the respiration rate of domestic activated sludge was determined to be higher than the highest concentration tested (100 mg/L) for the analogue.