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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 231-442-4 | CAS number: 7553-56-2
Endpoint summary
Administrative data
Description of key information
Additional information
Endpoint |
Value |
Physical state |
Bluish-black lustrous solid |
Melting point |
113.6 °C at 1013 hPa |
Boiling point |
184.4 °C at 1013 hPa |
Relative density |
4.93 g/cm3 at 20 °C |
Vapour pressure |
31.1 Pa at 25 °C |
Water solubility |
330 mg/L at 25 °C |
Partition coefficient n-octanol/water (log value) |
Log Pow = 2.49 at 20 °C |
Flammability |
Not flammable |
Explosive properties |
Non explosive |
Oxidising properties |
Not oxidising |
Granulometry |
Virtually no particles below 100 µm |
Dissociation constant |
pKa values for the corresponding acids are 10.5 for hypoiodous acid (HIO), 0.78 for iodic acid (HIO3) and -8.56 for hydriodic acid (HI) |
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.
