Registration Dossier
Registration Dossier
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EC number: 218-880-1 | CAS number: 2273-43-0
Endpoint summary
Administrative data
Description of key information
Adsorption / desorption
The Soil Adsorption Coefficient i.e Koc value of test chemical Butylstannonic acid (CAS No:2273-43-0) was estimated using EPI suite KOCWIN Program (v2.00) as 201.6 L/kg (log Koc= 2.3045) by means of MCI method at 25 deg.C. This Koc value indicates that the substance Butylstannonic acid has lowsorption to soil and sediment and therefore hasmoderate migration potential to groundwater.
Additional information
Adsorption / desorption
Predicted data for the target compoundButylstannonic acid(CAS No. 2273-43-0) and various supporting weight of evidence studies for its structurally and functionally similar read across substance were reviewed for the adsorption end point which are summarized as below:
The Soil Adsorption Coefficient i.e Koc value of test chemical Butylstannonic acid (CAS No:2273-43-0) was estimated using EPI suite KOCWIN Program (v2.00) as 201.6 L/kg (log Koc= 2.3045) by means of MCI method at 25 deg.C.
In a supporting weight of evidence study from authoritative database (2017) for the test item,the Koc value for test chemical was estimated by using a structure estimation method based on molecular connectivity indices. The estimated Koc value was 72 dimensionless and log Koc 1.8573, respectively.
For the test chemical,adsorption study was conducted for estimating the adsorption coefficient (Koc) value of test chemical. The adsorption coefficient (Koc) value was calculated using as structure estimation method based on molecular connectivity indices. The adsorption coefficient (Koc) value of test substance was estimated to be 80 (Log Koc = 1.903).
On the basis of above overall results for target chemicalButylstannonic acid(from modelling databases,2017), it can be concluded that the Koc value of test substance Butylstannonic acid was estimated to be 201.6 (Log Koc = 2.3045) indicating that the test chemical Butylstannonic acid has a low sorption to soil and sediment and therefore have moderate migration potential to ground water.
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