Registration Dossier
Registration Dossier
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Reaction mass of Amines, C10-14-branched and linear alkyl, [1-[(2-hydroxy-4-nitrophenyl)azo]-2-naphthalenolato(2-)][1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphthalenolato(2-)]chromate(1-) and Amines, C10-14-branched and linear alkyl, bis[1-[(2-hydroxy-4-nitrophenyl)azo]-2-naphthalenolato(2-)]chromate(1-) and Amines, C10-14-branched and linear alkyl, bis[1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphthalenolato(2-)]chromate(1-)
EC number: 939-191-9 | CAS number: -
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
According to structural properties, hydrolysis is not expected.
Key value for chemical safety assessment
Additional information
The Pigment Orasol Black X51 (EC no. 939-191-9) is a multipartite chromium complex composed of single complex fractions of azo-dye compounds and amine compounds of the mixture Tridecylamine (TDA), branched and linear (CAS 86089-17-0).
Tridecylamine, branched and linear (CAS 86089-17-0) is a mixture composed of (predominantly) groups of isomers with chain lengths ranging from C11 to C14 and, to a minor content, of C10 alkylamines. The following relative distribution of the C10 to C14 alkylamines was confirmed by GC/MS analysis:
• C10-amines: 1% (selected as representative amine compound; reason: shortest alkyl chain)
• C11-amines: 12%
• C12-amines: 16%
• C13-amines: 68% (selected as representative amine compound; reason: main component)
• C14-amines: 3% (selected as representative amine compound; reason: longest alkyl chain)
The assessment of the hydrolysis potential of Orasol Black X51 is additionally based on the available data for the respective azo-dye components without metal complexation (CAS 6434-57-7 and CAS 14847-54-2) as well as for the selected three representative amine compounds of TDA, branched and linear (CAS 86089-17-0).
Assessment:
According to Kollig et al. (1993), Boethling & Mackay (2000) and Harris (1990), the complete complex Orasol Black X51 (EC 939-191-9) as well as its single azo-dye and amine components are generally resistant to hydrolysis because they do not contain any labile functional groups. Therefore, no study on hydrolysis is performed.
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