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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 273-732-3 | CAS number: 69012-32-4 By-product of smelting of phosphate rock, silica and coke in manufacture of phosphorus.
Sediment toxicity
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
According to Annex X, endpoint 9.5.1, the study needs to be conducted if the results of the safety assessment indicate the need to further investigate the effects of the substance on sediment organisms.
The dissolution/transformation study with P-slag showed that no significant quantity of potentially toxic elements will be solved in water, so there will not be any significant exposure of aquatic organisms in an aquatic toxicity study. Thus the equilibrium partitioning method using PNECaqua cannot be applied. Following the Integrated Testing Strategy (Guidance Document R.7b, figure R.7.8-8) at least one long-term sediment test should be available.
To evaluate the potential toxicity by oral uptake of particles mixed in the sediment, it is proposed to perform a study on the insect Chironomus sp. (A study to establish the sensitivity for the taxon including worms is proposed under the terrestrial toxicity.) For the benthic test organism the exposure will be both by the water phase and by oral uptake of the sediment. This test in intended to confirm the absence of significant exposure and toxicity of P-slag (limit test with 1000 mg/kg dw). The results will be used to validate the hypothesis that the bioavailability of the elements in P-slag is low.
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.
