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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 234-842-7 | CAS number: 12036-22-5
Endpoint summary
Administrative data
Description of key information
Tungsten dioxide is a solid inorganic substance which forms brown, monoclinic crystals. It is solid at room temperature with a melting point of ca. 1500 degrees C and a relative density of 10.7161 g/cm³. The substance as manufactured has a median particle size of 14.57 µm, with approximately 90% of the mass smaller than 27.17 µm. Tungsten dioxide is slightly soluble in water (4.2 mg/L in the T/D test). The substance is neither auto-flammable nor flammable and has also no oxidizing properties.
Additional information
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.
