Registration Dossier
Registration Dossier
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Reaction mass of tetrasodium 3-[[4-[[4-[(6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-6-sulphonato-1-naphthyl]azo]-1-naphthyl]azo]naphthalene-1,5-disulphonate and tetrasodium 3-[[4-[[4-[(6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-7-sulphonato-1-naphthyl]azo]-1-naphthyl]azo]naphthalene-1,5-disulphonate
EC number: 911-640-3 | CAS number: -
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
IC50, 3h, static > 1000 mg/l
IC20, 3h, static > 1000 mg/l
Key value for chemical safety assessment
- EC50 for microorganisms:
- 1 000 mg/L
Additional information
One study (1997, Ciba) was performed on FAT40564/A following OECD 209 to determine the inhibitory effect on the respiration activity of activated sludge. The inhibitory effect of the test substance at a particular concentration was expressed as a percentage of the mean respiration rates of two controls and IC50 was determened to be > 1000 mg/l for the tested substance and IC50 was 9.0 mg/l for the reference substance (95% confidence limits 6.93 - 11.26 mg/l).
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