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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 231-974-7 | CAS number: 7783-00-8
Melting point / freezing point
Administrative data
Link to relevant study record(s)
Description of key information
In a weight of evidence approach the melting point of the compound can be described as follows:
CRC (2008): The test substance decomposes at 70 °C.
Merck (2006): The test substance is stated to give off water when heating and selenium oxide sublimes.
Key value for chemical safety assessment
Additional information
According to handbook data (Merck index and CRC handbook) selenous acid decomposes at 70 °C. Handbook data considered to be from a trusted source acc. to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance" and therefore, the value could be regarded as valid.
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.
