Registration Dossier
Registration Dossier
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1-ol, [[4-[(3-aminophenyl)amino]-6-chloro-1,3,5-triazin-2-yl]amino]-2-[(E)-2-ylazo]-, polysulfonate, polynaphthen, sodium salt (1:?), diazotized, reaction products with 2-[(aminophenyl)sulfonyl]ethyl hydrogen sulfate, 1-naphthalenol, 8-amino- (1:1), polysulfonates, sodium salts and 2,4,6-trihalogeno-1,3,5-triazine
EC number: - | CAS number: -
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
FAT 40840/A TE had a significant inhibitory effect on the growth (yield) of Scenedesmus subspicatus after the test period of 72 hours at the test concentrations of 2.1 mg/L (72-hour LOEC) and at all higher test concentrations. The 72-hour NOEC was determined to be 0.52 mg/L, since at this test concentration the growth rate and yield were not significantly lower than in the control.
Key value for chemical safety assessment
- EC10 or NOEC for freshwater algae:
- 0.52 mg/L
Additional information
This modified algal test has demonstrated that the inhibitory effect of the test item FAT 40840/A TE on the growth of Scenedesmus subspicatus was caused in part by the indirect effect, the light absorption in the colored test solutions. However, the differences between experimental parts A and B were too high to state that the algal growth inhibition is only a result of a reduction in light intensity. Therefore, the results of experimental part A should be taken into consideration for the determination of the inhibitory effect of the test item on the algal growth. FAT 40840/A TE had a significant inhibitory effect on the growth (yield) of Scenedesmus subspicatus after the test period of 72 hours at the test concentrations of 2.1 mg/L (72-hour LOEC) and at all higher test concentrations. The 72-hour NOEC was determined to be 0.52 mg/L, since at this test concentration the growth rate and yield were not significantly lower than in the control.
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