Registration Dossier

Ecotoxicological information

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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
Deviations:
no
GLP compliance:
yes (incl. certificate)

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
liquid

Sampling and analysis

Analytical monitoring:
yes
Remarks:
ICP/OES

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
Daphnia magna
Details on test organisms:
Daphnia magna Straus, clone number 5, from at least the third generation (i.e. the third brood) obtained with a non-cyclic parthenogenesis reproduction.

Study design

Test type:
static
Water media type:
other: ultrapure water
Limit test:
no
Total exposure duration:
48 h

Test conditions

Hardness:
210 mg/L of CaCO3
Test temperature:
19.8 – 20.0°C
pH:
7.9
Dissolved oxygen:
8.8 mg/L
Nominal and measured concentrations:
Water Accomodated Fractions (nominal concentrations): 55, 324, 1050 mg/L.
Reference substance (positive control):
yes
Remarks:
potassium dichromate

Results and discussion

Effect concentrationsopen allclose all
Key result
Duration:
48 h
Dose descriptor:
EL50
Effect conc.:
ca. 319.7 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mobility
Duration:
24 h
Dose descriptor:
EL50
Effect conc.:
ca. 956.5 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mobility

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
The results obtained for the test item “W3803S04SOLSIV” on the toxicological endpoint “immobilisation” gave an EL50-24h = 956.5 mg/L [696.6– 1657.6] and an EL50-48h = 319.7 mg/L [257.9 – 404.4] based on nominal test item loading rate.