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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 234-796-8 | CAS number: 12033-89-5
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
There was no inhibition of activated sludge at any of the concentrations of Silicon Nitride tested. Therefore EC50 was >300 mg/L.
Key value for chemical safety assessment
- EC10 or NOEC for microorganisms:
- 300 mg/L
Additional information
An Activated Sludge Respiration Inhibition Test (ASRIT) was conducted (ARC Seibersdorf research GmbH, 2005) to determine the effect of Silicon Nitride on microorganisms. The test was conducted according to OECD test guideline 209, EC Directive 87/302 (method C11), and in compliance with GLP. Activated sludge was taken from a sewage treatment plant which treated predominantly domestic waste. Cultures were exposed to Silicon Nitride at concentrations of 7.0, 16.0, 47.2, 118.8, 303.8 and 304.4 mg/L. There was no inhibition of the activated sludge at any of the test substance concentrations. The respiration rates of all samples with the test substance were in the range of 97.1 to 105.8% of the control value.
EC20 >300 mg/L
EC50 >300 mg/L
EC80 >300 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.
