Registration Dossier
Registration Dossier
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EC number: 274-490-1 | CAS number: 70236-60-1
Endpoint summary
Administrative data
Description of key information
Additional information
The primary source, if releases would occur of environmental pollution of Acid Brown 282 (ABr282) is represented by industrial waste water and secondary by release during washing of dyed textile, thus the fate and pathways of ABr282 in surface water is of primary concern.
In the aquatic environment, hydrolysis is not expected to be an important removal process for ABr282.
Phototransformation in air/water/soil has not been investigated.
The binding capacity (or “stickiness”) of the ABr282 to solid surfaces is expected to be low.
Given the intended use in aqueous-based treatments, ABr282 is not expected to be released to air and is not expected to partition to this compartment.
Under standard test conditions no readily biodegradation was observed; ABr282 was tested following the Zahn-Wellens/EMPA procedures and higher than 20 %, but less than 70 % degradation (24 % -Archroma Germany GmbH, 2005 and 32 % - Huntsman Textile Effects (Germany) GmbH, 1995) was attained after 28 days of contact time. Therefore ABr282 can be termed as inherent, primary biodegradable and is expected to be persistent.
There are no empirical bioaccumulation data available for ABr282, nevertheless the Pow was calculated as 0.8654 (average log Pow: -0.0752) (REACH&Colours Kft, 2012) and, on the basis of this outcome, it is expected that ABr282 has a low potential for bioaccumulation and/or a low potential to cross biological membranes.
Direct and indirect exposure of sediment and soil to ABr282 is unlikely; since no exposure of the aquatic compartment is foreseen and thus subsequent sediment and/or soil exposure can be excluded.
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