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EC number: 944-461-4
CAS number: -
Table 1: Biodegradability in %.
Table1: Biodegradation based on biochemical
oxygen consumption [%]:
(mean of three replicates)
(mean of two replicates)
Table 2: Biodegradation based on test
Test substance concentration [mg/L]
Residual rate of test substance [%]
Biodegradation rate [%]
The substance Reaction mass of
is not readily and not inherent biodegradable according to OECD criteria.
Two key studies are available on the biodegradability potential of
Reaction mass of
The first study focuses on the ready biodegradability of the test
substance while further study evaluates its inherent biodegradation.
In the study by Jing (2014) the ready biodegradability of the test
substance was investigated according to the OECD guideline 301 F and
GLP. A non-adapted, activated sludge from a domestic sewage treatment
plant was used as inoculum and was exposed to an initial nominal test
substance concentration of 55.5 mg/L (50.0 mg ThOD/L). After 28 d test
duration, 0% degradation of the test substance (based on O2 consumption)
was observed. A toxicity control containing both, reference substance
(sodium benzoate) and test substance did not indicate inhibitory effects
to the inoculum, as 63.92% biodegradation, of the reference item took
place within 14 d.
In a further study of Jing (2014) the inherent biodegradation of the
substance was tested according to OECD 302 C and GLP. A mixture of
sewage soil and natural water was exposed to 30 mg/L test material for
28 d. Sodium benzoate was used as the reference
substance. The test substance was analyzed by UPLC. No degradation was
recorded after 28 d (0%) based on O2 consumption and on test substance
analysis. The degradation percentage in the toxicity control on day 14
was 60.76 %, which shows that the test substance has no inhibitory
effects on the inoculum at the given concentration.
Based on the above described results it is assumed that the substance is
persistent in the environment.
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