Registration Dossier
Registration Dossier
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: 202-943-5 | CAS number: 101-43-9
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The test substance is acutely harmful to algae.
ErC50 (72h) Pseudokirchneriella subcapitata = 12.5 mg/L
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 12.5 mg/L
- EC10 or NOEC for freshwater algae:
- 5.49 mg/L
Additional information
An acute toxicity study was conducted with Pseudokirchneriella subcapitata (BASF SE 2010) according to OECD Guideline 201 using a static design. Nominal exposure concentrations were 0 (control), 3.2, 10, 32, 100, and 320 mg/L. Tests were conducted in closed flasks, completely filled with test medium. Initial cell density was reduced to 0.3E+04 cells/mL due to the closed system. Mean measured concentrations ranged from 23-78 % within this test. Therefore, results were related to measured concentration. The 72-hour ErC50 value for growth rate was determined as 12.5 mg/L, the ErC10 as 5.49 mg/L.
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.
