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EC number: 813-789-9
CAS number: 152873-67-1
Biodegradation of Fluormorpholinylacrylaldehyd:
Nitrogen is part of the molecular structure of the test item; therefore
the evaluation of biodegradation has to be based on ThODNH4 and ThODNO3.
The criterion for ready biodegradability under the conditions of a
manometric respirometry test is the degradation of the test item of at
least 60%, reached within a 10-day window; the 10-day window starts when
the degradation of the test item reaches at least 10% degradation.
Fluormorpholinylacrylaldehyd never reached 10% biodegradation (ThODNH4,
ThODNO3). The mean biodegradation at test end after 28 days was 7%
(ThODNH4) and 5% (ThODNO3).
Therefore, Fluormorpholinylacrylaldehyd is considered to be not readily
biodegradable based on ThODNH4 and ThODNO3.
Biodegradation of Sodium Benzoate:
The reference item sodium benzoate was sufficiently degraded to 82%
after 14 days and to 88% after 28 days of incubation, thus confirming
the suitability of the aerobic activated sludge inoculum used.
Biodegradation of the Toxicity Control:
In the toxicity control containing both, the test item and the reference
item sodium benzoate, 51% (ThODNH4) biodegradation was noted within 14
days and 58% (ThODNH4) biodegradation after 28 days of incubation (45%
and 52% based on ThODNO3). According to the test guidelines, the test
item can be assumed to be not inhibitory to the aerobic activated sludge
microorganisms because degradation was >25% within 14 days.
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