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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 480-890-9 | CAS number: 906532-68-1
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
NOEC of Everzol Orange ED-G Crude was at 1000 mg/l. The EC50 exceeded 1000 mg/l.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 1 000 mg/L
- EC10 or NOEC for microorganisms:
- 1 000 mg/L
Additional information
The influence of Everzol Orange ED-G Crude on the respiration rate of activated sludge was investigated after a contact time of 3 hours.
Concentrations of 10, 100 and 1000 mg/l were tested. The result showed no inhibition, 5% and 13% inhibition of the respiration rate at 10, 100 and 1000 mg/I, respectively. The respiration inhibition rate of the sludge at 1000 mg/l was not significant based on the statistics in the Appendix 3 in the experimental report (Two samples t-Test: α =0.05). Thus, the EC50 was above the highest concentration rate tested (1000 mg/l).
There was no oxygen uptake from abiotic processes. The results at 1000 mg/l with a nitrification inhibitor showed that the heterotrophic inhibition of the respiration rate was comparable to the total inhibition.
The batch of activated sludge was checked for sensitivity by testing the reference substance 3,5 -dichlorophenol, which showed normal sensitivity.
In conclusion, Everzol Orange ED-G Crude was not toxic to waste water (activated sludge) bacteria at a concentration of 1000 mg/l (NOEC). The EC50 exceeded 1000 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.
