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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 231-892-1 | CAS number: 7775-27-1
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
Description of key information
The overall range of mass median diameter (D50) for disodium persulfate was determined at 150 - 350 µm. Particle size fractions <100 µm, <10 µm and <5 µm were found. The overall range for ca. 98 % or more of the present particles was 5 - 1000 µm (aerodynamic diameter). All applied testing methods (counted and volumetric distribution) were performed in accordance with OECD guideline no. 110, Method A, 12 May 2008.
Additional information
According to the Technical Guidance document on Risk Assessment, particles with aerodynamic diameters <100 µm have the potential to be inhaled. Particles with aerodynamic diameters of above 1 - 5 µm have the greatest probability of settling in the nasopharyngeal region whereas particles with aerodynamic diameters below 1 - 5 µm are most likely to settle in the tracheobronchial or pulmonary regions. For disodium persulfate particles up to <5 µm were present. Max 5.5 % of particles were <10 µm (total fraction).
Notably, the substance is classified and labelled as Respiratory sensitizing category 1 (H 334: May cause allergy or asthma symptoms or breathing difficulties if inhaled) and specific target organ toxicity – single Category 3 (H335: May cause respiratory irritation) according to Regulation 1272/2008/EC (CLP).
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.
