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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: - | CAS number: -
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
ErC50 72h Desmodesmus subspicatus > 1000 mg/l (loading rate), corresponding to > 92 mg/l measured concentration
EyC50 72h Desmodesmus subspicatus > 1000 mg/l (loading rate), corresponding to > 92 mg/l measured concentration
ErC50 72h Desmodesmus subspicatus > 100 mg/l has been chosen as representative value since no effect has been observed up to the measured concentration of 92 mg/l.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 100 mg/L
Additional information
The multi-constituent substance " Reaction mass of dodecane-1-thiol and tridodecyl trithiophosphite" was tested for growth inhibition on algae Desmodesmus subspicatus. The test was performed according to OECD TG 201 and the result was EC50 growth rate 72h Desmodesmus subspicatus > 1000 mg/l loading rate, corresponding to > 92 mg/l measured concentration. According to ECHA guidance R7b for slightly soluble substance for which no effect at concentration below 100 mg/l was observed, the PNEC should be calculated on limit value of solubility in the medium. For this substance the limit of solubility in the medium is expected to be similar to the solubility of the substance in water (i.e. 96.3 mg/l) approximated to 100 mg/l. ErC50 72h Desmodesmus subspicatus >100 mg/l has been chosen as representative value since no effect has been observed up to the measured concentration of 92 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.
