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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 233-484-9 | CAS number: 10196-04-0
Melting point / freezing point
Administrative data
Link to relevant study record(s)
Description of key information
According to the reference, ammonium sulfite monohydrate decomposes between 60 - 70°C. The substance sublimes at 150°C.
Key value for chemical safety assessment
Additional information
For the evaluation of this endpoint data from one handbook (CRC handbook, 1974) was used as key information. Information on the decomposition of ammonium sulfite monohydrate was also stated in the newer version of the handbook (CRC handbook, 2008). However, this version only stated that the substance decomposes, but the exact decomposition temperature was not stated.
According to the REACH regulation ("ECHA, guidance on information requirements and chemical safety assessment - chapter R.7.a"), it is allowed to use specific handbook data as a reliable data source. Useful reference books and data compliations containing peer reviewed physico-chemical data include the CRC handbook of Chemistry and Physics.
Data available from the CRC handbook stated that ammonium sulfite monohydrate decomposes between 60 -70°C and sublimes at 150°C.
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.
