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EC number: 267-007-0
CAS number: 67762-26-9
This substance is identified by SDA Substance Name: C14-C18 and C16-C18 unsaturated alkyl carboxylic acid methyl ester and SDA Reporting Number: 04-010-00.
Using the Capacity factor K' and the
partition coefficient log Pow of the reference items, the following
calibration curve was obtained:
log Pow=3.708 log K' + 3.531
Esterol A gives six peaks on the
chromatogram.Four of them have a retention time superior to the DDT
which is the highest point of the calibration curve.So for that four
peaks the log Pow is higher than 6.2.The two first minor peaks are on
the calibration curve, so a value of log Pow can be calculated.The
following table gives the percentage of area and the log Pow values
obtanied for 3 injections (repeatability control) and calculated from
the UV trace at 210 nm.These value were calculated using the precedent
regression equation with the corresponding retention time.
The partition coefficient of Fatty Acids
C16 -C18 and C18 -unstd., Me esters has been measured according
to Council Regulation (EC) No. 440/2008, Method A.8, by HPLC
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