Registration Dossier
Registration Dossier
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Reaction mass of tetrasodium 5-{[4-chloro-6-(4-{[2-(sulfonatooxy)ethyl]sulfonyl}anilino)-1,3,5-triazin-2-yl]amino}-4-hydroxy-3-[(4-{[2-(sulfonatooxy)ethyl]sulfonyl}phenyl) diazenyl]naphthalene-2,7-disulfonate and trisodium 5-({4-chloro-6-[4-(vinylsulfonyl) anilino]-1,3,5-triazin-2-yl}amino)-4-hydroxy-3-[(4-{[2-(sulfonatooxy)ethyl]sulfonyl}phenyl)diazenyl]naphthalene-2,7-disulfonate
EC number: 701-360-8 | CAS number: -
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The test item is not harmful to activated sludge. The EC50 is above 4000 mg/L
Key value for chemical safety assessment
- EC50 for microorganisms:
- 4 000 mg/L
- EC10 or NOEC for microorganisms:
- 4 000 mg/L
Additional information
The test substance was investigated in the respiration inhibition test (OECD 209). Activated sludge was treated with the test substance at 50, 100, 200, 2000 and 4000 mg/L concentrations and effects observed after 3 h.
The inoculum was 4 g/L; the graph of the dose-effect curve shows that there is no dose-dependency at all concentrations.
Due to the nearly parallel curve progression to the "concentration axis" it is assumed that there is definitely no inhibition up to a concentration of 4000 mg/L.
Hence, the test item is not harmful to activated sludge. The EC50 is above 4000 mg/L
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