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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 310-051-3 | CAS number: 102110-50-9 The residues obtained by the addition of aluminum or zinc to end liquors obtained from secondary refining of gold, iridium, osmium, palladium, platinum, rhenium, ruthenium or silver. Composed primarily of the precious metals, ammonium chloride and chlorides of aluminum, magnesium and zinc.
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
Description of key information
A dispersion procedure was developed and then particle size distribution was analysed by laserlight diffraction. The percentiles calculated from particle size distribution were x10: 0.61 - 0.62 µm, x50: 2.26 - 2.30 µm and x90: 5.48 - 5.61 µm.
Additional information
The particle size distribution was determined in a study (Fraunhofer 2014) that follows a recognised method. A dispersion procedure was developed and then particle size distribution was analysed by laserlight diffraction.
A second sample of residues, cementation and reduction was also analysed in a study (Outotec 2010) in which the particle size distribution was determined in an experimental study using a sieving system. The study is not GLP but followed sound scientific principles, was well documented and is considered suitable for use for this endpoint. The particle size distribution study indicated a D80 of 306 µm for residues, cementation and reduction, precious metal refining.
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.
