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: -
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The substance is not readily biodegradable (according to OECD criteria).
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
The Pigment Orasol Black X51 (EC no. 939-191-9) is a multipartite chromium complex composed of single complex fractions of azo compounds and amine compounds of the mixtureTridecylamine (TDA), branched and linear (CAS 86089-17-0).
There are experimental data on the readily biodegradability of the complete complex Orasol Black X51 (EC no. 939-191-9) available:
In a study performed according to OECD guideline 301B (CO2 Evolution Test, BASF SE, 2017, Rep. no. 22G0074/16G139), the mean degradation of Orasol Black X51, tested in two concentrations was 3% after 28 days; domestic activated sludge was used as inoculum.
The available data for the complete complex Orasol Black X51 (EC no. 939-191-9) are supported by data on the biodegradation potential of Tridecylamine (TDA), branched and linear (CAS 86089-17-0):
TDA, branched and linear (CAS 86089-17-0) is not readily biodegradable (according to OECD criteria). In a CO2 Evolution Test according to OECD TG 301B, the mean degradation of TDA, tested in two concentrations, was < 10 % after 56 days, indicating poor biodegradability (BASF AG, 2003; rep. no.: 03/0391/36/1); domestic activated sludge was used as inoculum.
Based on the available experimental information Orasol Black X51 (EC no. 939-191-9) is considered to be not readily biodegradable (according to OECD criteria).
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