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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 268-612-2 | CAS number: 68131-30-6 A solution obtained by dissolving the chemicals recovered in the alkaline pulping process in water.
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
Direct phototransformation and photolysis in air are not regarded as an important environmental fate process of this substance. The constituents are not volatile in alkaline conditions (excluding water). Volatile gases can be evolved, H2S in neutral and acidic conditions and CO2 in acidic conditions. Direct photolysis is not an important degradation process, since these gases may absorb natural light photons effectively, but the reactions do not lead to remarkable decomposition/destruction of these gases. Instead, indirect photodegradation of H2S is important process and it effectively and rapidly oxidizes hydrogen sulfide to SO2. The oxidation reaction is mediated primarily by photochemically generated hydroxyl (OH.) radicals.
Key value for chemical safety assessment
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.
