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: 939-704-6 | CAS number: -
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
3 h EC50 (OECD 209): 1204 mg/L
Key value for chemical safety assessment
- EC50 for microorganisms:
- 1 204 mg/L
Additional information
In the Klimisch 1 GLP study from Fiebig (2013) the respiration inhibition of Aspartic acid, N-(3-carboxy-1-oxo-sulfopropyl)-N-(C16-C18 (even numbered), C18 unsaturated alkyl) tetrasodium salts on activated municipal sludge was determined according to OECD 209. Based on the outcome of a pre-test, the test was performed at following concentrations Control, 62.5 - 125 - 250 - 500 - 1000 mg/L. The test groups were set up in with following number of replicates: 6 (Control), 5 (62.5, 125, 250 mg/L), 4 (500 mg/L) and 1 (1000 mg/L). Except the lower number of replicates in the two higher test concentrations, all validity parameters as outlined in the OECD 209 were fulfilled. The lower number of replicates in the two higher test concentrations which was chosen due to the limited amount of test item, is considered to have no impact on the outcome of the study, especially since the outcome is furthermore supported by the range-finding test. Statistical evaluation showed that the test item has an EC50 of > 1000 mg/L, extrapolated to 1204 mg/L.
The results of this study are considered relevant and reliable for the risk assessment.
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.
Route: .live2