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EC number: 201-810-9 | CAS number: 88-21-1
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The no observed effect concentration (NOEC) value of 2-aminobenzenesulphonic acid in aquatic algae (Pseudokirchnerella subcapitata) in a 72 hrs study was estimated to be 0.3396714 mg/L.
Key value for chemical safety assessment
- EC10 or NOEC for freshwater algae:
- 0.34 mg/L
Additional information
No. of studies were reviewed for toxicity to aquatic algae from reliable sources having Klimisch rating 2 and 4.
The summary of the results are presented below
Sr.No |
Endpoint |
Effect values |
Basis for effects |
Duration |
Species |
Sources |
1. |
NOEC |
0.3396714mg/L |
Growth |
72 hrs. |
Pseudokirchnerella subcapitata |
Predicted data from QSAR for target CAS : 88-21-1 |
2. |
EC50 |
198.373mg/l |
- |
96 hrs. |
Green Algae |
Predicted data from ECOSAR for target CAS : 88-21-1 |
3. |
EC50 |
170 mg/l |
Population |
48 hrs. |
Desmodesmus subspicatus (reported as Scenedesmus subspicatus) |
Experimental data for read across CAS: 615-36-1 |
Based on the studies summarized in the above table for the target substance 2-aminobenzenesulphonic acid and the read across substance, the endpoint value was found to vary between EC50 = 170 mg/l to 198.373mg/l and NOEC =0.3396714mg/L in a 96,72 and 48 hrs.; on the basis of Population and growth effect. Based on the above weight of evidence values, it is concluded that the test substance dose not qualifies for the aquatic toxicity.
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