Registration Dossier

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 grey-black or brown powder.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
solid

Additional information

The appearance of residues, cementation and reduction, precious metal refining, was described as a black powder 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 is considered reliable. The company-provided data indicates that residues, cementation and reduction, precious metal refining is an odourless grey-black or brown solid (powder).