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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Appearance / physical state / colour

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Administrative data

Link to relevant study record(s)

Description of key information

The appearance of this test item is a black, grey or yellow solid (powder).

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:

Additional information

The appearance of slimes and sludges, precious metal refining was described as a black solid in a study report (Harlan 2010) which is considered reliable and acceptable for use as a key study. This is supported by data received from a member company, which are considered reliable. The company-provided data indicate that slimes and sludges, precious metal refining, is an odourless solid (powder), which is grey/dark grey (sometimes black) or yellow.