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.
reaction mass of: tetrasodium 7-(4-(4-fluoro-6-(4-(2-sulfonatoethylsulfonyl)phenylamino)-1,3,5-triazin-2-ylamino)-2-ureidophenylazo)naphthalene-1,3,6-trisulfonate;tetrasodium 7-(4-(4-hydroxy-6-(4-(2-sulfonatoethylsulfonyl)phenylamino)-1,3,5-triazin-2-ylamino)-2-ureidophenylazo)naphthalene-1,3,6-trisulfonate
EC number: 427-650-1 | CAS number: -
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
The dissociation constant of the test substance at room temperature (circa 22°C) was determined within this study as pKa = 3.2 for the acid range, using the six mean values of three experiments.
Key value for chemical safety assessment
- pKa at 20°C:
- 3.2
Additional information
A study was conducted according to OCED test guideline 112.
The dissociation constant of the test substance at room temperature (circa 22°C) was determined within this study as pKa = 3.2 for the acid range, using the six mean values of three experiments.
The pKa value for the alkaline range was not determined because it was not recognized as a real one. The investigations for the hydrolysis show the decomposition of the test substance in alkaline solutions. The abiotic hydrolysis data of all reactive-dyes, determined in the testing facility, resulted in a half-life period at pH 9 and 25 °C of less than one day.
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.
