Registration Dossier
Registration Dossier
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Reaction mass of 5,5'-{(phenylmethanediyl)bis[benzene-4,1-diyl-diazene-2,1-diyl]}bis{1-[3-(dimethylamino)propyl]-4-methyl-6-oxo-3-(pyridinium-1-yl)-1,6-dihydropyridin-2-olate} hydrochloride and 5,5’-[3,4’-(phenylmethanediyl)diphenylene]bis(diazene-2,1-diyl)bis{1-[3-(dimethylamino)propyl]-4-methyl-6-oxo-3-(pyridinium-1-yl)-1,6-dihydropyridin-2-olate} hydrochloride
EC number: 700-312-3 | CAS number: -
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
The substance registered is hydrolytically stable in the environmentally relevant pH and temperature range.
Key value for chemical safety assessment
Additional information
The hydrolysis properties of the analogue substance were investigated with a valid study following the protocol as given in OECD Guideline 111. The applicability of the read across approach had been confirmed by the registrant via an expert statement (see IUCLID chapter 13).
At pH 4.0 and pH 7.0 and at a temperature of 25 °C, the analogue substance has a half-life longer than one year. At pH 9.0, the first compound (main peak) has a half-life of 5986 hours (249 days) at 25 °C, while the second compound has a half-life of 110616 hours (4609 days) at 25 °C. Based on these data it is to be concluded that the analogue substance is hydrolytically stable in the environmentally relevant pH and temperature range. Based on the applicability of the proposed read across approach, the same hydrolysis properties are likely to apply to the substance registered as well.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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