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Ecotoxicological information

Short-term toxicity to fish

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Administrative data

Endpoint:
short-term toxicity to fish
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1993-08-03 -- 1993-08-07
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Few primary data and observations of the fish during study period. No statistical evaluation.

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed
Report date:
1993

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: EEC Method C1
GLP compliance:
yes

Test material

Constituent 1

Sampling and analysis

Analytical monitoring:
yes
Details on sampling:
Sample filtered through 0.45 um filter before anlysing

Test solutions

Details on test solutions:
Identity and concentration of auxiliary solvent for dispersal: None

Test organisms

Test organisms (species):
Danio rerio (previous name: Brachydanio rerio)
Details on test organisms:
10 Zebrafish (Brachydanio rerio) and 10 used for control. Loading 0.7 g fish/liter in the aquaria.

Study design

Test type:
semi-static
Water media type:
freshwater
Limit test:
yes
Total exposure duration:
96 h
Post exposure observation period:
No post observation period.

Test conditions

Hardness:
CA 250 mg CaCO3/L
Test temperature:
23 ± 0.8 °C
pH:
7.8 ± 0.2
Dissolved oxygen:
>80 % during the test.
Salinity:
300 mg/l

Results and discussion

Effect concentrations
Duration:
96 h
Dose descriptor:
NOEC
Effect conc.:
>= 0.05 mg/L
Results with reference substance (positive control):
Result for 10 fish with refernce substance potassium chromate (K2Cr2O7) was equal to standard result at the laboratory.
Reported statistics and error estimates:
Not possible to perform.

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
The test substance did not show any effect on fish up to the solubility limit of 0.05 mg/l. NOEC was not possible to determine, but the registrant conclusion is that Gelpaste Urea not is acute toxic to fish.