Registration Dossier
Registration Dossier
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A mixture of isomers of: 1,1'-[(3,5(or 2,4 or 4,6 or 2,6)-dihydroxy-o(or m or p)-phenylene)bis(azo-meta-phenyleneazo{1-[3-(dimethylamino)propyl]-1,2-dihydro-6-hydroxy-4-methyl-2-oxopyridine-5,3-diyl})]dipyridinium-dichloride-dihydrochloride; 1-(1-[3-(dimethylamino)propyl]-5-{3-[x-(4-{1-[3-(dimethylamino)propyl]-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-5-pyridinio-3-pyridylazo}phenylazo)-2,4(or 2,6 or 3,5 or 4,6)-dihydroxyphenylazo]phenylazo}-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-3-pyridyl)pyridinium-dichloride-dihydrochloride (where x is variable)
EC number: 404-540-1 | CAS number: 159405-95-5 BRAUN HM 2763; BROWN HM 2763; BRUN HM 2763; BRUNO HM 2763
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
Low potential for adsorption is expected.
Key value for chemical safety assessment
- Koc at 20 °C:
- 3.162
Additional information
According to column 2 of Annex VIII of the REACH Regulation (EC 1907/2006), the study on adsorption/desorption does not to be conducted if the physicochemical properties of the test item indicate low adsorpton potential, such as a low octanol/water partition coefficient. As test item has a log Kow < 0 and a high water solubility, it can be concluded that the substance has a low adsorption potential and the study on adsorption/desorption is not run.
A default value for Koc of non-hydrophobic substances is proposed by EUSES 2.2.0; this value is 3.162 l/kg and it is used in the chemical safety assessment.
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.
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