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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Endpoint:
sediment toxicity: long-term
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:
Justification for type of information:
JUSTIFICATION FOR DATA WAIVING
In accordance with column 2 of Annex X (Section 9.5.1) of REACH Regulation 1907/2006 long-term toxicity testing may be required if the results of the chemical safety assessment indicate the need for further testing. The substance consists of amorphous and crystalline silica which when released into the environment are expected to combine indistinguishably with the soil or sediment due to their similarity with inorganic soil/sediment matter and will be subjected to natural processes under environmental conditions (cation exchange, dissolution, sedimentation). It is therefore considered to be essentially a mineral fraction of soil already. For this reason it is considered that the performance of a study with sediment-dwelling organisms is not scientifically justified.
Endpoint:
sediment toxicity: short-term
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:
Justification for type of information:
JUSTIFICATION FOR DATA WAIVING
In accordance with column 2 of Annex IX (Section 9.4) of REACH Regulation 1907/2006 short-term toxicity testing may be required if direct and indirect exposure of the soil compartment is likely.
The substance consists of amorphous and crystalline silica which when released into the environment are expected to combine indistinguishably with the soil or sediment due to their similarity with inorganic soil/sediment matter and will be subjected to natural processes under environmental conditions (cation exchange, dissolution, sedimentation). It is therefore considered to be essentially a mineral fraction of soil already. For this reason it is considered that the performance of a study with sediment-dwelling organisms is not scientifically justified.

Description of key information

In accordance with column 2 of Annex X (Section 9.4) of REACH Regulation 1907/2006 toxicity testing to sediment-dwelling organisms may be required if the results of the chemical safety assessment indicate the need for further testing. The substance consists of amorphous and crystalline silica which when released into the environment are expected to combine indistinguishably with the soil or sediment due to their similarity with inorganic soil/sediment matter and will be subjected to natural processes under environmental conditions (cation exchange, dissolution, sedimentation). It is therefore considered to be essentially a mineral fraction of soil already. For this reason it is considered that the performance of a study with sediment-dwelling organisms is not scientifically justified.

Key value for chemical safety assessment

Additional information