Registration Dossier
Registration Dossier
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: 202-947-7 | CAS number: 101-50-8
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
The chemical 4-aminoazobenzene-3,4'-disulphonic acid is not persistent in air medium as the half life period of 4-aminoazobenzene-3,4'-disulphonic acid in air is only 1.7 days.
Key value for chemical safety assessment
- Half-life in air:
- 1.7 d
Additional information
The atmospheric oxidation half-life of 4-aminoazobenzene-3,4'-disulphonic acid was estimated using the level III multimedia model. It was estimated that the substance is not persistent in air medium as the half life period of 4-aminoazobenzene-3,4'-disulphonic acid in air is only 1.7 days. This indicates that 4-aminoazobenzene-3,4'-disulphonic acid is rapidly phototransformed in air.The hydroxyl radical reaction rate constant is estimated to be 0.0000000000096 cm3/molecule-sec at 25 degrees C.
Media | Half life (days) | Percent in Medium |
Air | 1.7 | 0% |
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.
