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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 211-522-5 | CAS number: 657-84-1
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
No tests available for phototransformation/photolysis. Not required under REACH.
An estimation of the Hydroxyl Radicals Reaction is available with AopWin v1.92 for some substances:
OVERALL OH Rate Constant:
STS = 1.2243 E-12 cm3/molecule-sec
SXS = 3.1131 E-12 cm3/molecule-sec
NH4XS = 3.1131 E-12 cm3/molecule-sec
Half-Life:
STS = 8.737 Days (12-hr day; 1.5E6 OH/cm3)
SXS = 3.436 Days (12-hr day; 1.5E6 OH/cm3)
NH4XS = 3.436 Days (12-hr day; 1.5E6 OH/cm3)
Values for STS have been taken as representative for the risk assessment
Key value for chemical safety assessment
- Half-life in air:
- 8.737 d
- Degradation rate constant with OH radicals:
- 0 cm³ molecule-1 s-1
Additional information
No information available for phototransformation/photolysis. Not required under REACH
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.
