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Short-term toxicity to aquatic invertebrates

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Reference
Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1996
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
Deviations:
no
GLP compliance:
no
Specific details on test material used for the study:
Test substance: Terasil Blau GRN Isomerengemisch roh feucht
Code: FAT 92504/A
Batch-No.: 1/95
Appearance: solid blue
Solubility (g/l): <0.1
Storage: room temperature
Expiration date: 04/1999
Analytical monitoring:
no
Vehicle:
yes
Details on test solutions:
None
Test organisms (species):
Daphnia magna
Details on test organisms:
None
Test type:
not specified
Water media type:
freshwater
Limit test:
no
Total exposure duration:
48 h
Test temperature:
21 °C
pH:
7.6 - 7.8
Dissolved oxygen:
97 - 99 % at the end of the exposure
Nominal and measured concentrations:
0.1, 1, 10 and 100 mg/L
Reference substance (positive control):
no
Key result
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:
1 out of 10 daphnids at the concentration of 10 mg/L was found dead at the end of 48-hour exposure period. Apart from this, no mortality was observed at any other cocentrations of 0.1, 1 and 100 mg/L as well as blank or vehicle groups.
Results with reference substance (positive control):
None
Validity criteria fulfilled:
yes
Conclusions:
The 48h EC50 of FAT 92504/A to daphnids was determined to be >100 mg/L.
Executive summary:

The short-term toxicity of FAT 92504/A to aquatic invertebrates was evaluated in a study conducted according to OECD Guideline 202. In this study, groups of 10 daphnids were exposed to the test concentrations of 0.1, 1, 10 and 100 mg/L for 48 hours. The daphnids were also exposed to blank and vehicle groups. The observations of mobility were recorded to determine the toxicity of the substance. 1 out of 10 daphnids at the concentration of 10 mg/L was found dead at the end of 48-hour exposure period. Apart from this, no mortality was observed at any other concentrations of 0.1, 1 and 100 mg/L as well as blank or vehicle groups. Hence, the 48h EC50 of FAT 92504/A to daphnids was determined to be >100 mg/L.

Description of key information

The short-term toxicity of FAT 92504/A to aquatic invertebrates was evaluated in a study conducted according to OECD Guideline 202. In this study, groups of 10 daphnids were exposed to the test concentrations of 0.1, 1, 10 and 100 mg/L for 48 hours. The daphnids were also exposed to blank and vehicle groups. The observations of mobility were recorded to determine the toxicity of the substance. One out of 10 daphnids at the concentration of 10 mg/L was found dead at the end of 48-hour exposure period. Apart from this, no mortality was observed at any other concentrations of 0.1, 1 and 100 mg/L as well as blank or vehicle groups. Hence, the 48h EC50 of FAT 92504/A to aquatic invertebrates was determined to be >100 mg/L.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
100 mg/L

Additional information