Registration Dossier
Registration Dossier
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EC number: 946-790-9 | CAS number: -
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
EC50 (48 h, Daphnia magna) > 100 mg/L (nominal)
NOEC (48 h, Daphnia magna) ≥ 100 mg/L (nominal)
Key value for chemical safety assessment
Additional information
A limit test was conducted to determine the acute toxicity of the test substance to Daphnia magna, according to the OECD Guideline 202 (2004) and the EU method C.2 of the Regulation EC 440/2008. The study was performed using the concentration of 100 mg/L test item (nominal). For the test concentration, 20 daphnia were exposed to the test item for 48 hours in a static test system. After 24 and 48 hours, the immobilised daphnia were counted.
The treatment showed 10% immobilisationwhich can be stated as not significant. None of the animals was immobilised in the blank control.
Potassium dichromate K2Cr2O7(CAS No. 7778-50-9) was used as positive controlin a current reference study to assure that the test conditions are reliable.
The statistical evaluation program showed that there was no significant difference between treatment and blank control.
At the beginning and at the end of the test, the content of the test item in the test solutions was determined using Photometer-determination. The concentration determined at the start of the test was 99 % of the nominal concentration. At the end of the test the determined concentration was 106 % of the nominal concentration. Therefore, the determination of the biological results was based on the nominal concentration.
The following results were determined :
48h-NOEC≥100
mg/L (nominal conc.)
48h-LOEC> 100mg/L
(nominal conc.)
24h-EC50> 100 mg/L(nominal
conc.)
48h-EC50> 100 mg/L(nominal
conc.)
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