Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
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.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
