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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 224-548-7 | CAS number: 4404-43-7
Endpoint summary
Administrative data
Description of key information
Additional information
The substance is a fine organic greyish yellow powder at 20 °C and 1013 hPa; it is a member of the Stilbene Fluorescent Whitening Agents category, subgroup 3a.
Experimental melting point was reported as 290 °C in literature. Boiling point was not measured since the estimated value is over 1000 °C
Water solubility wasreported in literature as 80 g/l. Based on estimation with WSKOWWIN the substance is expected to be very soluble: (210 g/l).
The particle size distribution was experimental analysed using the technique of laser diffraction and is characterized by a MMD of 130 µm.
The partition-coefficient (n-octanol / water) was determined by an appropriate in silico estimation method because Stilbene Fluorescent Whitening Agents are ionisable substances and therefore difficult to test.The partition coefficient value (experimentally measured) is expected to be outside the applicability range of the shake flask method, the HPLC method, and the slow-stirring method. Nevertheless, the estimated value can be considered an evidence of the much greater affinity of the substance towards the water phase, compared to the affinity towards the octanol phase.
Since the substance is solid, properties like vapour pressure, surface tension, flash point can be disregarded, while viscosity determination is technically not feasible.
Based on the actual knowledge, the substance is not flammable and it is deemed not to be potentially oxidising, or explosive based on the chemical structure, the oxygen balance values and the known experience in the handling and use.
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.
