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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 205-572-7 | CAS number: 142-92-7
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The 30-minute EC50 was determined to be between 100-1000 mg/l. The NOEC was found to be 100 mg/l.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 100 mg/L
- EC10 or NOEC for microorganisms:
- 100 mg/L
Additional information
A study was carried out to determine the effect of hexyl acetate on the respiration of activated sewage sludge. The study was carried out according to OECD 209. Activated sewage sludge was exposed to an aqueous dispersion of hexyl acetate at concentrations of 10, 100, and 1000 mg/l (3 replicates at 1000 mg/l) for a period of 30 minutes. The 30 minute test time was used due to the volatile nature of the substance. Test temperature was 20 ± 2oC. Synthetic sewage was added as a respiratory substrate. The rate of respiration was determined after the 30 minutes exposure time and compared to data from the control. Control solutions with inoculum and a reference substance, 3,5 -dichlorophenol, were used for validation purposes.
The 30-minute EC50value was found to be between 100 and 1000 mg/l. The 30-minute no observed effect concentration (NOEC) was found to be 100 mg/l. The reference item gave a 30-minute EC50 of 12 mg/l with 95% confidence limits of 10 -14 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.
