Registration Dossier
Registration Dossier
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EC number: 274-105-7 | CAS number: 69762-08-9
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Non toxic to aquatic invertebrates, short-term exposure.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 302 mg/L
Additional information
No data on the short-term toxicity to aquatic invertebrates of Acid Yellow 049 sodium salt is available. Therefore, a read across approach was followed using available dat on Acid Yellow 049 acid form. Details on the read across approach are reported in section 13.
The substance was tested on acute immobilisation test on Daphnia magna, according to ISO 6341 15. Daphnids were exposed to the nominal concentration of 1000, 800, 700, 600, 500, 400, 200, 100, 60 mg/l, over a period of 48 hours.
Immobilisation in the controls did not exceed 10 % at the end of the test and the dissolved oxygen concentrations (throughout the test) remained above 2 mg/l. The resulting EC50 were 608 and 302 mg/l at 24 and 48 hours, respectively.
There was no information about measured concentrations. However, there was no reason to suspect that the substance may not be stable over the whole testing period because of the physicochemical properties: substances is water soluble, not readily abiotically or biotically degradable. Possible adsorption is expected to be negligible.
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