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 disodium 4-amino-6-[[4-[(2,4-diaminophenyl)diazenyl]phenyl]]-3-((E)-[4-((E)-(2,4-diaminophenyl)diazenyl]phenyl )diazenyl)-5-hydroxynaphthalene-2,7-disulphonate and disodium 4-amino-6-((E)-(4-aminophenyl)diazenyl)-3-((E)-(4-((E)-(2,4-diaminophenyl)diazenyl)phenyl)diazenyl)-5-hydroxynaphthalene-2,7-disulfonate
EC number: 951-695-0 | CAS number: -
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
The data for similar substance of Direct Black 19 are :
log Koc, soil, pH 5.6, 25°C= 2.42
log Koc, sludge, pH 5.6, 25°C=2.39
log Koc, soil, pH 7.4, 25°C = -0.07
log Koc, sludge, pH 7.4, 25°C = -0.52
Key value for chemical safety assessment
- Koc at 20 °C:
- 12.6
Additional information
A study (VUOS, 2011) was performed to estimate the adsorption coefficient Koc of similar substance on soil and sludge by means of HPLC method, following EU C.19. Log Koc for both soil and sludge are less than 3 for pH 5.6 at 25°C and negative at pH 7.4, showing very low potential of adsorption of the tested substance.
No significant influence of the counterion can be estimated on this result.
The value of 1.1 has been set as the minimum log Koc value accepted by EUSES to perform the risk assessment.
[LogKoc: 1.1]
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.
