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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: few details; short publication.

Data source

Reference
Reference Type:
publication
Title:
No information
Author:
P.J. Dierickx and C. Vanderwielen
Year:
1986
Bibliographic source:
Gluthathione dependent toxicity of the algicide 1-chloro-2,4-dinitrobenzene to Daphnia magna Straus. Bulletin of Environmental Contamination and Toxicology, 1986. 37: p. 629-632.

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
ISO 6341 (Water quality - Determination of the Inhibition of the Mobility of Daphnia magna Straus (Cladocera, Crustacea))
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Test solutions

Details on test solutions:
Concentrations from 0.12 to 1.85 mg/l used

Test organisms

Test organisms (species):
Daphnia magna
Details on test organisms:
Only adults daphnids used.
20 organisms (4 replicates of 5 individuals each) tested at each concentration

Study design

Test type:
static
Water media type:
freshwater
Total exposure duration:
48 h

Test conditions

Hardness:
225 - 275 mg/l (as CaCO3) and Ca:Mg ratio of 4:1
Test temperature:
19 - 20 ºC
pH:
7 - 7.6

Results and discussion

Effect concentrationsopen allclose all
Duration:
24 h
Dose descriptor:
EC50
Effect conc.:
0.85 mg/L
Remarks on result:
other: 95
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
0.59 mg/L
Remarks on result:
other: 95
Duration:
24 h
Dose descriptor:
EC50
Effect conc.:
0.66 mg/L
Remarks on result:
other: 95
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
0.49 mg/L
Remarks on result:
other: 95

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
Deemed to be very toxic towards Daphnia Magna.