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Diss Factsheets

Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
key study
Study period:
12 December 1996
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
Deviations:
not specified
GLP compliance:
no
Specific details on test material used for the study:
Test substance: FAT 20035/D
Batch-No.: 9
Appearance: solid brown
Solubility (g/l): 20
Storage: room temperature
Expiration date: 06/2000
Analytical monitoring:
not specified
Details on sampling:
Not available
Vehicle:
not specified
Details on test solutions:
Not available
Test organisms (species):
Daphnia magna
Details on test organisms:
Not available
Test type:
not specified
Water media type:
not specified
Limit test:
no
Total exposure duration:
48 h
Post exposure observation period:
Not available
Hardness:
Not available
Test temperature:
21 °C
pH:
7.6 to 78
Dissolved oxygen:
96 - 99 %
Salinity:
Not available
Nominal and measured concentrations:
Nominal concentrations : 0.1,1, 10 and 100 mg/L
Details on test conditions:
Not available
Reference substance (positive control):
not specified
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
> 100 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mobility
Details on results:
No immobilisation was noted in all the test concentrations at 24 as well as 48 h exposure period.

There were no immobilisation was noted in all the test concentrations at 24 as well as 48 h exposure period.


 


Immobilisation of daphnids:





























































 Nominal concentrations (mg/l) No. of animals No. of immobilised dapnhids (24 h)  No. of immobilised dapnhids (48 h)% immobility (24 h)  % immobility (48 h)
 Vehicle 5 + 5 0 0 0 0
 Blank    5 + 5 0 0 0 0
 0.1   5 + 5 0 0 0 0
 1.0   5 + 5 0 0 0 0
 10   5 + 5 0 0 0 0
 100   5 + 50  0 0 0

The EC50 is >100 mg/l.

Validity criteria fulfilled:
not specified
Conclusions:
The 48 h EC50 for FAT 20035/D in Daphnia magna is greater than 100 mg/l.
Executive summary:

Toxicity of test substance FAT 20035/D was estimated according to OECD test guideline 202. Five daphnids in duplicate sets per test concentration were exposed to 0.1, 1.0, 10 and 100 mg/l concentration .


Based on the study results, there were no immobilisation was noted in all the test concentrations at the end of 48 h exposure period. 48 h EC50 for FAT 20035/D in Daphnia magna is greater than 100 mg/l.

Description of key information

EC50 of test substance in Daphnia magna is greater than 100 mg/l.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Dose descriptor:
EC50
Effect concentration:
100 mg/L

Additional information

Toxicity of test substance FAT 20035/D was estimated according to OECD test guideline 202. Five daphnids in duplicate sets per test concentration were exposed to 0.1, 1, 10 and 100 mg/l concentration .Based on the study results, there were no immobilization was noted in all the test concentrations at the end of 48 h exposure period. 48 h EC50 for FAT 20035/D in Daphnia magna is greater than 100 mg/l.