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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 241-883-4 | CAS number: 17958-73-5
Long-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
waiving
Key value for chemical safety assessment
Additional information
Direct and indirect exposure is unlikely due to the risk management measures that will be applied at industrial level and discussed in details within the exposure scenario to avoid any release of the substance directly in the municipal waste water treatment.The monitoring data and the field studies showed that the substance can be effectively removed from the waste waters, because of the high affinity with the organic fraction. Therefore it is expected that the discharge in environment will be very low.
Based both on acute and long term test, a PNEC of 0.13 mg/l in fresh water is calculated, while the maximum exposure calculated by EUSES based on the actual exposure scenarios and condition of use are of 0.007 mg/l and the maximum monitored quantity referred to 1997 of a monitored member of the category of the Stilbene Fluorescent Optical Brightener is 0.0011 mg/l. The local RCR in surface water is then 0.05 and 0.0052 based on estimated and monitored quantities, respectuvely.
In order to follow a precautionary approach, the substances manufactured at the highest tonnages in the category have been investigated maximising the water and sediment releases (performing the calculation using the lowest experimental Koc value). Despite the water and sediment PECs result inevitably increased, the risk resulted to be controlled using the same risk management measures (for further details, see the category justification document).
Another aspect that can be taken into account is that a test (with a good reliability) on the toxicity to fish at 14 -days with Brachydanio rerio is available (Bayer AG., 1992). The following nominal concentrations were tested: 100, 316, 1000 mg /l. A NOEC was identified at the concentration of 859 mg/l (nominal).
Taking into account these further results and the expected concentrations in environment, a long term toxicity test on fish is deemed as unjustified.
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.
