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EC number: 700-853-5
CAS number: 943586-12-7
The data collection stopped at day 24 due to an electrical fall out. The
monitoring stopped with lack of data for the period from day 24 to day
28. The mixing and temperature control was still intact. As the oxygen
consumption had almost reached the plateau in bottles with PC2414 and in
bottles with the reference substance at the time for the stop, the stop
had only little influence on the results. The oxygen consumption at day
28 was calculated by extrapolation from day 24 using the slope of the
oxygen consumption from day 19 to 24.
ready biodegradability of PC2414 was examined using manometric
respiration in accordance with OECD guideline 301F. The ready
biodegradability of PC2414 was determined by continuous measurement of
the oxygen consumption, the biochemical oxygen demand (BOD), during the
test period. The measured oxygen consumption was compared to the
theoretical oxygen demand (ThOD) for a complete oxidation of PC2414. The
ThOD of PC2414 was expressed as the chemical oxygen demand (COD), which
was measured according to the ISO standard 15705.
is known to hydrolyse and hydrolysis was therefore expected during
preparation of stock solution. The test was performed on test solutions
prepared from stock solution indicating that BOD represent both PC2414
and hydrolysis products. As the ThOD is measured on subsamples from the
stock solution it is also anticipated that ThOD represent both PC2414
and hydrolysis products. Thus the measured BOD and ThOD are comparable.
pass level for ready biodegradability (60% of ThOD) was accomplished at
the end of the test (28 days) and within the 10-day window. All validity
criteria were fulfilled, hence PC2414 was found to be readily
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