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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 203-933-3 | CAS number: 112-07-2
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Pseudokirchnerella subcapitata 72hr (growth rate) EC50=1570 EC0=300mg/l
Scenedesmus subspicatus 72hr (growth rate: EC0>500mg/l
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 1 570 mg/L
- EC10 or NOEC for freshwater algae:
- 300 mg/L
Additional information
There is limited data available on the toxicity of 2 -butoxyethyl acetate to algae, but sufficient to meet the requirements of the end point. Two experimentally derived results are available, both showing relatively low toxicity to the species. The study used as the key study shows the lower of the two results and is to a modern protocol. It is deemed reliable, although the available publication is not particularly detailed. The data is sufficient to judge with confidence that the substance is of low toxicity to algae. The data is also sufficient to provide a NOEC for use in deriving the PNEC for the aquatic compartment.
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.
