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EC number: 466-470-8
CAS number: -
Whereas the substance is stable at pH 7 (halflife > 1 year), at pH4 the substance was unstable (halflife of 68 hours (3 days) at 25 °C) and at pH 9 a lower degradation rate (3576 hours (149 days) at 25 °C) was found.
The test for hydrolysis of the test item was performed at 50.0 °C ± 0.1
°C at each of pH 4.0, pH 7.0 and pH 9.0.
FAT 40825/A was found to be stable at pH 7.0 and 50 °C. Therefore no
further testing was performed at this pH-value.
As significant abiotic degradation of FAT 40825/A was seen in the
pre-test at pH 4.0 and at pH 9.0, further testing was performed at
elevated temperatures in order to calculate the rate constant (k25) and
the half-life time of the hydrolysis at pH 7.0, pH 9.0 at 25 °C. The
results are summarised below:
FAT 40825/A at pH 4.0 has a half-life
time of 68 hours (3 days) at 25 °C.
FAT 40825/A is stable at pH 7.0. Its
half-life time is longer than one year at 25 °C.
FAT 40825/A at pH 9.0 has a half-life
time of 3576 hours (149 days) at 25 °C.
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