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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 202-532-0 | CAS number: 96-76-4
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
ErC50 (72 h) = 0.37 mg/l (OECD 201)
NOErC (72 h) = 0.073 mg/l
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 0.37 mg/L
- EC10 or NOEC for freshwater algae:
- 0.073 mg/L
Additional information
ErC50 (72h) for the growth rate was determined to be 9.85 mg/L, and for the yield, EyC50 (72h) to be 3.61 mg/l. The growth rate NOErC (72h) was calculated to be 2.2 mg/L; LOErC (72h) was 4.0 mg/L. The yield NOEyC (72h) was 1.2 mg/L; LOEyC (72h) was 2.2 mg/L.
Concentrations analysed were between 2.5 and 4.0% of the nominal concentrations (corresponding to the theoretical concentration of the saturated solution of 33 mg/L). Measured exposure concentrations decreased to 31.9 - 39.1% of the initial concentrations during the course of the test. The geometric mean of the exposure concentrations analysed were between 0.48 and 0.030 mg/L. ErC50(72h, conc, analysed) was determined to be 0.37 mg/l, EyC50 (72h, concentration analysed) was 0.13 mg/l. NOErC (72h concentration analysed) was 0.073 mg/l and NOEyC (72h concentration analysed) was 0.030 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.
