Registration Dossier
Registration Dossier
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EC number: 293-878-1 | CAS number: 91648-19-0
Endpoint summary
Administrative data
Description of key information
No toxicity data are available for 1-propanamium, N-(3-aminopropyl)-2-hydroxy-N,N-dimethyl-3-sulfo-,N-C12-14 acyl derivs., hydroxides, inner salts to soil organisms. In the absence of terrestrial toxicity data, the hazard of the substance to soil organisms has been based on the equilibrium partition method (EPM), resulting in a PNEC soil value of 2.06 µg/kg soil dry weight. Applying this PNEC soil value in the environmental risk assessment showed accepted risk in the soil compartment for all exposure scenarios and given the conservative nature of the EPM, is considered sufficiently conservative for risk assessment. Furthermore, studies show that the substance is readily biodegradable and therefore non-persistent in the environment and has low adsorption/desorption potential based on calculated partition coefficient values, with the main constituent (the propanaminium C12 species) showing a calculated log Kow value of -2.34 and is therefore not assumed to adsorb to soil. Data for the effects of the substance on soil organisms are therefore considered unnecessary and have been waived accordingly.
Additional information
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