Registration Dossier
Registration Dossier
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EC number: 938-828-8 | CAS number: 1463474-95-4
Endpoint summary
Administrative data
Description of key information
Additional information
The substance is hydrolytically stable. This was confirmed by an actual study with HBED-Fe and supported by the testing of the structurally related substance EDDHMA-Fe and the lack of hydrolyzable groups.
The degradation of the structurally related EDDHMA-Fe in water as a result of direct photo-transformation (photolysis) was investigated according to the OECD Draft guidance document:"Direct Phototransformation of Chemicals in water". Chemical analysis of EDDHMA-Fe resulted not in one peak, but in 4 peaks (2 major peaks at approximately t = 6.5 and t = 19.9 minutes, respectively and two minor peaks at approximately t = 5.5 and t = 18.9 minutes, respectively). So probably, the test substance consists of at least 4 components. For practical reasons, the photochemic degradation of the 2 major components (component A and B) was determined. The half-life time for phototransformation of EDDHMA-Fe at 25 +/- 3 degree C is determined to be 40.66 and 35.4 hours for component A (retention time 6.5 minutes) and component B (retention time 19.9 minutes) respectively, at a light intensity of 4.86E20 photons/second in the wavelength range of 290 - 500 nm.
These results indicate, that HBED-Fe can undergo abiotic degradation in water in the presence of light.
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