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EC number: 208-762-8
CAS number: 540-97-6
log Kow [dodecamethylcyclohexasiloxane]: 8.87
The measurement of n-octanol/water partition coefficient for
dodecamethylcyclohexasiloxane (D6) is complicated by the difficulty in
sample handling and a very low water solubility. A log Kow of
8.87 has been determined in a reliable study designed to overcome these
difficulties and this is selected as key study. It is close to the value
of 9.06 obtained from estimates using four different methods. Two
earlier measurements of the log Kow of 5.86 and 4.36 are
available. These are disregarded as the methodologies were considered
not appropriate for the substance.
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