Registration Dossier
Registration Dossier
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EC number: 412-050-4 | CAS number: 125109-85-5 FLORHYDRAL
Endpoint summary
Administrative data
Description of key information
The equilibrium partitioning approach has been applied in the Chemical Safety Report to calculate soil RCRs in the absence of specific toxicity data for soil organisms. The contamination of soil with FLORHYDRAL can only arise from indirect inputs, of which, amendment with sewage sludge, and, to a much lesser extent, from the airborne phase, via rain-out of particle bound or gaseous FLORHYDRAL, are possible sources. The Readily biodegradable status of the substance, and, the STP distribution models suggest that a significant portion of FLORHYDRAL will be biodegraded before leaving an STP. A certain portion will adsorb to the sewage sludge (4.57%, STP Fugacity Model, EPISuite (v4.11)) where it could be imagined that microbial degradation will continue in the sludge, which is, after all, a microbially rich environment. Further quantities of FLORHYDRAL will also be lost from the system, via further degradation and volatilisation during the drying and work-up process to prepare sewage sludge in readiness for land application. The soil compartment is, therefore, considered to be of low significance for potential exposure.
Additional information
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