Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

The adsorption coefficient of the research material was determined to be < 17.8 with Log10 Koc < 1.25 (OECD 121 and EU Method C.19).

Additional information

Adsorption/desorption

The key determination was carried out using the HPLC screening method, designed to be compatible with Method C.19 Adsorption Coefficient of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 121 of the OECD Guidelines for Testing of Chemicals, 22 January 2001.

 

The test utilised a High Performance Liquid Chromatograph. A commercially available cyanopropyl reverse phase HPLC column containing lipophilic and polar moieties was used. The dead time was determined by measuring the retention time of formamide (purity quoted by supplier: 99.94%) at 615 mg/L in methanol. Solutions of reference standards were prepared in methanol and the test item (0.0536 g) was diluted to 100 mL with methanol:water (55:45 v/v) to give a concentration of 0.536 g/L.

 

The adsorption coefficient of the research material was determined to be < 17.8 with Log10 Koc < 1.25