Registration Dossier
Registration Dossier
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EC number: 938-828-8 | CAS number: 1463474-95-4
Biodegradation in soil
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 study “Biodegradation in soil: simulation test according to OECD 307 does 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 soil. The substance is considered very mobile and will not sorb to 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 in or migrate rapidly to the aqueous phase and will be quickly degraded photolytically when reaching the surface water. Therefore, no further biodegradation in soil simulation testing is considered to be needed.
Key value for chemical safety assessment
Additional information
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