Registration Dossier
Registration Dossier
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EC number: 500-537-5 | CAS number: 161075-00-9
Endpoint summary
Administrative data
Description of key information
Additional information
Due to its chemical and physical properties, the main compartment of distribution of GALDEN LMW is expected to be the atmosphere.
Galden LMW is characterized by a high Henry Law’s constant of 1.4 - 2.1 x 10E7 Pa m3 /mol and a low water solubility of 0.47 mg/L, indicating that the product tends quickly to volatilize from water reaching the atmospheric compartment.
Basing on the experimental Log Kw = 5.58 and the estimated Log Koc = 3.74, a certain affinity for organic matter is expected, anyway, according to modelling estimation, when emitted to the environment practically 100% of the substance is expected to distribute to the atmospheric compartment at every degree of complexity of the model (Level I, II and III), while distribution to water, soil and sediment is expected to be negligible.
Experimental distribution studies were conducted in sediment-water-air systems. The studies were not performed according to standardized methods but methods and results are well documented and results provide information on the behavior of GALDEN LMW when spiked directly to the sediment.
In both the reported studies, no significant amount of the spiked Galden LMW remained into the sediment, no residual substance was found in the water phase while a certain amount was found in the headspace air.
In both the studies the mass balance was not complete. By the end of the experiment a large amount of the Galden LMW was lost from the test system, either due to volatilization of the test substance during the setup of the experiment, or due to the fact that the test system was not hermetically closed during the test period.
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