methyl 5-(bis(methoxycarbonylmethylamino))-4-cyano-3-methoxycarbonylmethylthiophen-2-carboxylate

Short-term toxicity to aquatic invertebrates

Administrative data

Endpoint:

short-term toxicity to aquatic invertebrates

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2003

Reliability:

1 (reliable without restriction)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2003

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)

Version / remarks:

and Directive CEE - Method C2

GLP compliance:

yes (incl. QA statement)

Test material

Reference

Name:

Unnamed

Type:

Constituent

Test organisms

Test organisms (species):

Daphnia magna

Details on test organisms:

STRAUS-clone 5

Study design

Test type:

semi-static

Total exposure duration:

48 h

Post exposure observation period:

observations at 0, 24 and 48h.

Test conditions

Hardness:

Reconstituted (M4) water.
255 mg CaCO3 / L.

Test temperature:

18.8-20.2°C

pH:

7.68 to 8.21

Dissolved oxygen:

maintained at >60% of air saturation

Nominal and measured concentrations:

See table below in the window "Any other information on materials and methods inc. tables."

Details on test conditions:

Determination of the number of immobilized daphnids in the test solutions.

Reference substance (positive control):

no

Results and discussion

Effect concentrations

Duration:

48 h

Dose descriptor:

EC50

Effect conc.:

>= 26.2 mg/L

Nominal / measured:

meas. (geom. mean)

Conc. based on:

test mat.

Basis for effect:

mobility

Remarks:

number of immobilized daphnia

Results with reference substance (positive control):

Not applicable.

Reported statistics and error estimates:

Not applicable.

Applicant's summary and conclusion

Conclusions:

The 48-h EC50 of thiofestermet for Daphnia magna in a static system is >26.2mg/L.
Not classified.