Poly[oxy(methyl-1,2-ethanediyl)], .alpha.-[2-[[2,2-dimethyl-3-[(1-oxododecyl)oxy]propylidene]amino]methylethyl]-.omega.-[2-[[2,2-dimethyl-3-[(1-oxododecyl)oxy]propylidene]amino]methylethoxy]-

Endpoint summary

Description of key information

Short-term toxicity to fish

Sika Hardener LJ was assessed in a short-term toxicity to fish study, according to OECD guideline 203 and EU method C.1. Young zebrafish were exposed to the test item in a semi-static test for 96 h at a nominal concentration of 100 mg/L. The test item showed no mortality up to a nominal concentration of 100 mg/L. Therefore the 96 h LC 50 was determined to be greater than 100 mg/L and the 96 h NOEC was determined to be 100 mg/L.

 

Short-term toxicity to aquatic invertebrates

Sika Hardener LJ was tested for toxicity to aquatic freshwater invertebrates in a 48h-semi-static test according to EU method C.2 revealing an EC50 of 350 mg/L and a NOEC of 100 mg/L.

 

Toxicity to aquatic algae and cyanobacteria

Sika Hardener LJ was assessed in an aquatic toxicity test to algae according to OECD guideline 201 and EU-method C.3. Four experiments were performed by preparing a water accomodated fraction. A nominal cocentration of 100 mg/L was tested in the first two experiments. In the main study five concentrations ranging from 18 to 460 mg/L were tested. In the last experiment three concentrations ranging from 2.2 to 10 mg/L were tested in order to ensure the validity of the main study. These two experiments were used for the evaluation of the results. The 72h EC50 based on the growth rate was determined greater than 460 mg/L. The overall NOEC was determined at 18 mg/L.

 

Toxicity to microorganisms

Sika Hardener LJ was tested for toxicity to microorganisms by determination of inhibition of the respiration of activated sludge according to OECD guideline 209 revealing a 3h EC50 of > 1000 mg/L and a NOEC  1000 mg/L.