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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 941-788-4 | CAS number: -
Toxicity to microorganisms
Administrative data
- Endpoint:
- activated sludge respiration inhibition testing
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
Data source
Materials and methods
Results and discussion
- Details on results:
- The lowest endpoint for Zn to mircoorganisms was taken from the REACH dossier of Zn oxide (CAS 1314-13-2). In a key study, a NOEC of 100 µg Zn/L with respect to the nitrification rate was determined. In the dissolution/transformation test the maximum Zn concentration of three replicates/concentrations were 11, 28 and 300 µg/L at a loading rate of 1, 10 and 100 mg/L. Based on the comparison of the dissoluted/transformed Zn concentration and the NOEC, it can be concluded that the NOEC of the substance to microorganisms is above the loading rate of 10 mg/L.
Applicant's summary and conclusion
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.
