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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 451-900-9 | CAS number: 894406-76-9
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
A study was carried out according to EU Method C.11, OECD Guideline 209 and EPA OPPTS 850.6800 (Modified Activated Sludge, Respiration Inhibition Test for Sparingly Soluble Chemicals). Predominantly domestic sewage sludge was exposed to concentrations of 0.32, 1.0, 3.2, 10, 32 and 100 mg/L over a period of 3 hours. The effect of the test material on respiration of activated sludge micro-organisms gave a 3-hour EC50 of 64 mg/L (51 mg/L as 100 % active ingredient). The No Observed Effect Concentration (NOEC) after 3 hours exposure was 10 mg/L (8 mg/L as 100 % active ingredient).
Key value for chemical safety assessment
- EC50 for microorganisms:
- 51 mg/L
- EC10 or NOEC for microorganisms:
- 8 mg/L
Additional information
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.
