Registration Dossier
Registration Dossier
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EC number: 247-640-9 | CAS number: 26381-41-9
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
NOEC was estimated to be 108.41mg/l when 8-[(p-aminophenyl)azo]-7-hydroxy-2-naphthyl]trimethylammonium chloride tested on Green Algae
Key value for chemical safety assessment
- EC10 or NOEC for freshwater algae:
- 108.41 mg/L
Additional information
Prediction model based estimation of of short term toxicity to aquatic invertebrates was performed. The summary is as mentioned below:
Based on the QSAR prediction done using the EPI Suite ECOSAR version 1.10, the NOEC was estimated to be 108.41mg/l when 8-[(p-aminophenyl)azo]-7-hydroxy-2-naphthyl]trimethylammonium chloride tested on Green Algae.
The Effect concentration (EC50) for the test compound Basic Blue 16 (CAS no 26381 -41 -9) in a 72h study using green algae Desmodesmus subspicatus is found to be 243.702758789 mg/L.
Though the chemical Basic brown 16 (CAS no 26381 -41 -9) is not readily biodegradable but it has a BCF < 500 and hence the chemical is likely to be "not classified" for aquatic classification as per CLP criteria.
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