Registration Dossier
Registration Dossier
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EC number: 255-062-3 | CAS number: 40754-59-4
Endpoint summary
Administrative data
Description of key information
Adsorption / desorption:
The Soil Adsorption Coefficient i.e Koc value of disodium 4-oxo-2-sulfonato-5,8,11,14-tetraoxahexacosan-1-oate was estimated using EPI suite KOCWIN Program (v2.00) as Koc 19.61 L/kg (log Koc = 1.292) by means of MCI method at 25 deg.C. This Koc value indicates that the substance disodium 4-oxo-2-sulfonato-5,8,11,14-tetraoxahexacosan-1-oate has a negligible sorption to soil and sediment and therefore have rapid migration potential to groundwater.
Additional information
Adsorption / desorption:
Two studies including those from validated prediction database and experimental study for Adsorption endpoint of target chemical disodium 4-oxo-2-sulfonato-5, 8, 11, 14-tetraoxahexacosan-1-oate (Cas no. 40754-59-4) and relevant read across which is structurally similar to the target chemical are summarized as followed:
First study from prediction model indicate the Soil Adsorption Coefficient i.e Koc value of disodium 4-oxo-2-sulfonato-5,8,11,14-tetraoxahexacosan-1-oate was estimated using EPI suite KOCWIN Program (v2.00) as Koc 19.61 L/kg (log Koc = 1.292) by means of MCI method at 25 deg.C. This Koc value indicates that the substance disodium 4-oxo-2-sulfonato-5, 8, 11, 14-tetraoxahexacosan-1-oate has a negligible sorption to soil and sediment and therefore have rapid migration potential to groundwater.
And an experimental study of structurally similar read across bis(2-(2-butoxyethoxy)ethyl) adipate (Cas no. 141-17-3) suggested the Koc of bis(2(2butoxyethoxy)ethyl) adipate is estimated as 1400 (log Koc as 3.14), using an estimated log Kow of 3.24 and a regression derived equation. This estimated Koc value suggests that bis(2(2butoxyethoxy)ethyl) adipate is expected to have moderate mobility in soil. (HSDB database; 2017)
Both values for adsorption (log Koc) is in the range of 1.292 -3.14 (L/kg or dimensionless) which conclude that the target chemical disodium 4-oxo-2-sulfonato-5, 8, 11, 14-tetraoxahexacosan-1-oate (Cas no. 40754-59-4) is expected to have high to moderate mobility in soil and sediment compartment.
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