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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 249-047-0 | CAS number: 28473-19-0
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
No data providing insights to the likely acute toxicity to freshwater aquatic algae were identified on DIDS (or DIDA or DOS).
A secondary source describes an unpublished study (performed according to OECD Guideline 201, but not to GLP), in which freshwater green algae (S. subspicatus) were exposed to DEHS at a nominal limit concentration of 1000 mg/L for 72 hr. No growth inhibition was seen over the course of the study (Anon, 1994c). A NOEC of 1000 mg/L (nominal) can be assumed.
No acute toxicity data on marine water algae are available for DIDS (or DIDA, DEHS and DOS).
Key value for chemical safety assessment
- EC10 or NOEC for freshwater algae:
- 1 000 mg/L
Additional information
No data providing insights to the likely acute toxicity to freshwater or marine aquatic algae were identified on DIDS.
Relevant read-across data:
A secondary source describes an unpublished acute toxicity study on freshwater green algae (Scenedesmus subspicatus) treated with DEHS, performed in accordance with OECD Guideline 201, but not to GLP. Green algae (at 1.9 x 104 cells/ml, with 6 replicates for the test solution and 3 for the untreated control solution) were incubated with DEHS at a nominal concentration of 1000 mg/L for 72 hr (at pH 8 and 24 °C). It was noted that analytical test concentrations of DEHS were very low [specific concentrations were not given], probably due to low water solubility. Algal growth was assessed in the test solution at 0, 24, 48 and 72 hr. Significant algal growth inhibition was not seen over the course of the study; a NOEC of 1000 mg/L can be assumed. According to the citing source, "data suggest that [the] test substance would not be expected to inhibit algal growth at its water saturation limit" (Anon, 1994c).
No acute toxicity data on marine water algae are available on relevant read-across compounds.
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.
