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EC number: 473-820-3
CAS number: -
The adsorption coefficient (Koc) is <17.8, logKoc <1.25.
The adsorption of the test material to soil was investigated in
accordance with the standardised guidelines OECD 121 and EU Method C.19
under GLP conditions. The study was awarded a reliability score of 1 in
accordance with the criteria for assessing data quality set forth by
Klimisch et al. (1997).
The soil adsorption/desorption screening test was carried out using the
HPLC estimation method at a column temperature of 30 °C in a mobile
phase of methanol : reverse osmosis water (55:45 v/v).
As the test material is a salt of a dicarboxylic acid, testing was
performed at a neutral pH with the test material in its ionised form
only. To obtain the test material in non-ionised form would require
testing to be performed at a strongly acidic pH (approximately 2), which
was outside the specified pH range for testing (approximately pH 5.5 to
The adsorption coefficient (Koc) of the test material has been
determined to be <17.8, logKoc <1.25.
The low result obtained by the HPLC estimation method was consistent
with the low partition coefficient.
In accordance with section 9.3.3 of column 2 of Annex IX of Regulation
(EC) No 1907/2006, further information on adsorption/desorption may be
required depending on the results of the study required at Annex VIII.
As the screening study indicated a low potential for adsorption, it is
therefore considered justified to omit this study as the endpoint has
been adequately addressed with the available data.
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