Registration Dossier
Registration Dossier
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EC number: 938-828-8 | CAS number: 1463474-95-4
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
Description of key information
In accordance with column 2 of REACH Regulation 1907/2006/EC Annex IX section 9.2.1.2, the studies “Aerobic mineralisation in surface water" according to OECD 309 and "Aerobic and anaerobic transformation in aquatic sediment systems" according to OECD 308 " simulation tests” do not need to be conducted as HBED-Fe has with a mean measured Kd of 0.21 L/kg (Koc of 15.33 L/kg) no significant potential for adsorption to sediment. The substance is considered very mobile and will not sorb to sediment or soil. In addition, rapid photodegradation of the analogue substance EDDHMA-FeNa at 25 +/- 3 ° C was observed in a GLP test according to OECD 316 (draft version 1995) with half-life’s of 40.66 and 35.4 hours for the two major components of this UVCB substance using a light intensity of 4.86E20 photons/second in the wavelength range of 290 - 500 nm.
In conclusion, based on the sorption/desorption test data and high water solubility (>10 g/L) of HBED-Fe the substance will remain or migrate rapidly to the aqueous phase and will be quickly degraded photolytically when reaching the surface water. Therefore, no further water/sediment simulation testing is considered to be needed.
Key value for chemical safety assessment
Additional information
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