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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 232-051-1 | CAS number: 7784-18-1
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
Description of key information
Average size diameter (key study): 20, 90 and 112 µm depending on the source of the test article.
Mass Median Diameter (supporting study): Inhalable fraction (less than 100 µm): 47.9%; Thoracic fraction (less than 10 µm): > 26.8%; Respirable fraction (less than 4 µm): < 1%.
Additional information
Based on the information obtained from a key study by Langheim (2001) using Laser Sizer LS 230, average particle sizes of 20 µm, 90 µm, and 112 µm were reported depending on the source of the test article.
In a supporting study by Griniene (2010) the mean values for test substance particles with diameters below 100 µm, 10 µm and 4 µm were 47.9%, greater than 26.8, and less than 1%, respectively.
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.
