Registration Dossier
Registration Dossier
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EC number: 205-439-3 | CAS number: 140-89-6
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
The adsorption coefficient (Koc) was estimated using the KOCWIN v2.00 QSAR model available from the US EPA. The estimated adsorption coefficient was 4L/kg (log Koc 0.602).
The log of the adsorption coefficient (KOC) of Potassium ethyl xanthate was estimated to be log KOC = 0.602 which is equal to a KOC value of 4 using the KOCWIN v2.00 QSAR method. This value indicates that Potassium ethyl xanthate will be adsorbed by organic carbon in soil. Potassium ethylxanthate can be classified to be of very high mobility in soil according these results and does not have a high potential for adsorption to soil
Potassium ethyl xanthate and xanthates in general adsorbs strongly to sulphide minerals but has less affinity for surfaces in general.
The KOC value of 4 also suggest this conclusion.
Key value for chemical safety assessment
- Koc at 20 °C:
- 4
Additional information
The log of the adsorption coefficient (KOC) of Potassium ethylxanthatewas estimated to be log KOC = 0.602 which is equal to a KOC value of 4 using theKOCWIN v2.00 QSAR method. This value indicates that Potassium ethyl xanthate will be adsorbed by organic carbon in soil.Potassiumethyl xanthatecan be classified to be of very high mobility in soilaccording these resultsand does not have a high potential for adsorption to soil
Potassium ethyl xanthate and xanthates in general adsorbs strongly to sulphide minerals but has less affinityfor surfaces in general. TheKOC valueof 4also suggest thisconclusion.
SMILES : CCOC(=S)S(K)
CHEM : Carbonodithioic acid, o-ethyl ester, potassium salt
MOL FOR: C3 H5 O1 S2 K1
MOL WT : 160.29
--------------------------- KOCWIN v2.00 Results ---------------------------
Koc Estimate from MCI:
---------------------
First Order Molecular Connectivity Index ........... : 2.770
Non-Corrected Log Koc (0.5213 MCI + 0.60) .......... : 2.0438
Fragment Correction(s):
1 Thiocarbonyl (C=S) .................. : -0.5701
1 Ether, aliphatic (-C-O-C-) .......... : -0.8716
Corrected Log Koc .................................. : 0.6021
Estimated Koc: 4 L/kg <===========
Koc Estimate from Log Kow:
-------------------------
Log Kow (User entered ) ......................... : -2.24
Non-Corrected Log Koc (0.55313 logKow + 0.9251) .... : -0.3139
Fragment Correction(s):
1 Thiocarbonyl (C=S) .................. : 0.3004
1 Ether, aliphatic (-C-O-C-) .......... : -0.0906
Corrected Log Koc .................................. : -0.1041
Estimated Koc: 0.7869 L/kg <===========
[LogKoc: 0.602]
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