Registration Dossier
Registration Dossier
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EC number: 241-883-4 | CAS number: 17958-73-5
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
NOEC 21d Daphnia = 6.59 mg/l
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 6.59 mg/L
Additional information
A Daphnia magna reproductive study is available on CAS 16470-24-9 with NOEC reported as geometric mean because the difference between nominal and measured values is often greater than ± 20 %. The test was performed on a similar substance within the category of Stilbene Fluorescent Whitening Agents, the analogous dihydroxyethyl derivative tetrasulphonated sodium salt.
This substance can be considered a conservative representative, since it has the similar organic functionalities, but the higher sulphonation let to a higher water solubility, therefore availability in the water compartment. The percentage and chemical identity of organic impurities are also very similar. The category Justification Report is attached to section 13.
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