Registration Dossier
Registration Dossier
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EC number: 403-700-8 | CAS number: 2687-94-7 NOP; SURFADONE LP-100 SURFACTANT
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
Significant adsorption to solid soil phase is not expected.
Key value for chemical safety assessment
- Koc at 20 °C:
- 309
Additional information
A adsorption/desorption study (Battelle 1991) was conducted according to EPA guideline subdivision N, Section 163-1. This study was selected as key study.
This study showed that the substance was readily adsorbed and readily desorbed to the four soils tested: loam, sandy loam, clay loam, and silt loam. Based on adsorption, the value of Koc is 303 for loamy soil. For sandy loam soil , the value of Koc is 202. For clay loam, the value of Koc is 278. For silt loam soil , the value of Koc is 192.
The range of Koc values for adsorption and desorption is 185 to 433 L/kg. The arithmetic mean value of 309 L/kg was used for the risk assessment.
It can be concluded that significant adsorption to solid soil is not expected.
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