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
Endpoint summary
Administrative data
Description of key information
Additional information
Summary data table on phys.-chem. properties:
| Endpoint | Result |
| Appearance | brown powder |
| Melting point | > 300 °C |
| Relative density | 1.112 |
| MMD | 37.0 µm |
Log Pow |
< 0 |
Water solubility |
miscible with water in a 1:1 ratio (w/v) |
Solubility in organic solvents |
> 1.4 mg/l at 37 °C |
Surface tension |
73.2 mN/m (at 528 mg/l) |
Self-ignition temperature |
> 400 °C |
Flammability |
non flammable |
Explosiveness |
non explosive |
Oxidising properties |
no oxidising properties |
Dissociation constant |
Completely miscible with water, in principle cationic at all pH values. |
Fixation in paper |
>90% fixation (water), >90% fixation (50% aqueous ethanol) |
Conclusion: test item is not to be classified for physical hazards.
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