Registration Dossier
Registration Dossier
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Reaction mass of isomers disodium 8-(2-{4-[benzyl(ethyl)amino]-2-methylphenyl}diazen-1-yl)-5-(2-{2,5-dimethyl-4-[2-(3-sulfonatophenyl)diazen-1-yl]phenyl}diazen-1-yl)naphthalene-2-sulfonate, disodium 5-(2-{4-[benzyl(ethyl)amino]-2-methylphenyl}diazen-1-yl)-8-(2-{2,5-dimethyl-4-[2-(3-sulfonatophenyl)diazen-1-yl]phenyl}diazen-1-yl)naphthalene-2-sulfonate
EC number: 700-946-0 | CAS number: -
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
EC50 = 2.60 mg/L (95 % confidence limits: 2.22 – 3.07 mg/L).
NOEC = 1.12 mg/L
LOEC = 2.09 mg/L.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Dose descriptor:
- NOEC
- Effect concentration:
- 1.12 mg/L
Additional information
The Daphnia magna Reproduction Test (semi-static, 21 d) of the test item was conducted according to OECD 211 (2012).
Ten daphnids, individually held, were used per concentration level, and control. The study was carried out under semi-static conditions with renewal of the test solutions three times per week.
The reduction of the reproductive output was the most sensitive effect in this study. Based on the significant reduction of the reproductive output at the concentration levels of 2.09 and 4.24 mg/L, the No Observed Effect Concentration (NOEC) after 21 days was assessed at 1.12 mg/L and the Lowest Observed Effect Concentration (LOEC) was assessed at 2.09 mg/L.
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