Registration Dossier
Registration Dossier
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EC number: 204-200-0 | CAS number: 117-61-3
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The 96 hrs EC50 value of Benzidine-2,2’-disulphonic acid in green algae was estimated to be 403.167 mg/L on the basis of growth. This value
indicates that the substance Benzidine-2,2’-disulphonic acid have no toxic effect on aquatic algae and cyanobacteria within the dose level mentioned in the end point.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 403.167 mg/L
- EC10 or NOEC for freshwater algae:
- 6.746 mg/L
Additional information
The 96 hrs EC50 value of Benzidine-2,2’-disulphonic acid in green algae was estimated to be 403.167 mg/L on the basis of growth. This value indicates that the substance Benzidine-2,2’-disulphonic acid have no toxic effect on aquatic algae and cyanobacteria within the dose level mentioned in the end point. The no observed effect concentration (NOEC) value of benzidine-2,2'-disulphonic acid in aquatic algae (Pseudokirchnerella subcapitata) in a 72 hr study on the basis of Population effect was estimated to be 6.7461 mg/L
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