Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Ecotoxicological information

Sediment toxicity

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Administrative data

Link to relevant study record(s)

sediment toxicity: long-term
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
Reason / purpose for cross-reference:
other: see Remarks
general substance background and toxicokinetics summary

Description of key information

Further testing is not required as per REACH Annex XI, sections 2 and 3 and/or Annex X, column 2, section 9.5.1.

Long-term sediment toxicity testing has been waived based on the results of the chemical safety assessment not indicating the need to further investigate the effect of the substance on sediment organisms.

Key value for chemical safety assessment

Additional information

If released to the environment, the substance is expected to combine indistinguishably with the soil or sediment due to its similarity with inorganic soil/sediment matter and will be subjected to natural processes under environmental conditions (cation exchange, dissolution, sedimentation). Furthermore the amounts released are negligible in comparison to the release by natural deposit or alteration. 

Furthermore, this substance is essentially an artificial sediment in itself by virtue of the fact that it is a synthetic smectite clay, which is found abundantly in nature in soils and sediments in lakes, river beds and marine environments. The definition of sediment is as follows: Sediment: is a mixture of mineral and organic chemical constituents, the latter containing compounds of high carbon and nitrogen content and of high molecular masses. It is deposited by natural water and forms an interface with that water. The material is non-biodegradable, retaining its clay structure in the environment. At normal environmental pHs, this material is stable. It does not dissolve in water but disperses to form a clear sol and in the pH range 4 – 9 does not hydrolyse. In addition to the material potentially being classed as an artificial sediment in its own right, it is unlikely through normal use patterns that it would reach exposure to natural sediments.