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EC number: -
CAS number: -
Determination of the partition coefficient of FAT 40863/A TE using the shake-flask method.
The determination was carried out using the
shake-flask method, designed to be compatible with Method A8 Partition
Coefficient of Commission Regulation (EC) No 440/2008 of 30 May 2008 and
Method 107 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.
Since the test item is a salt, testing was
performed at pH 7 as indicated in test guidance.
The test system consisted of an aqueous and
an n-octanol phase in the same vessel. A defined
amount of test item was added (pre-dissolved in the appropriate phase). Partition
of the test item between both phases was achieved by inversion of the
mixture. The temperature was in the range of 20 to 25
°C and kept constant (± 1 °C).
The determination of partition coefficient
was performed using the shake-flask method, as indicated for salts.
The stock solution was prepared in n-octanol
saturated water in place of water saturated n-octanol. This
was due to the insolubility of the test item in the organic phase. This
issue has been considered to have had a negligible impact on the overall
results and has been considered to be more appropriate to obtain a
realistic partition coefficient value.
The partition coefficient of the test item
has been determined to be 1.67 x 10-3at 21.9 ± 0.5 °C, log10Pow-2.79.
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