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EC number: 266-582-5
CAS number: 67124-09-8
If released into water, the mixture is poorly biodegradable.
objective of the biodegradation study conducted by Kung (1998) was to
evaluate the ready biodegradability of the test substance using a
respirometry test. The
study was conduced according to principles specified in the OECD Ready
Biodegradability Test method 301F (Manometric Respirometry Test). A
defined medium with low mineral concentration and neutral pH was used to
simulate the natural environment where biodegradation can occur. The
return sludge from a domestic waste water treatment plant was chosen as
the inoculum because of its diverse microbial population and high
microbial activities. A
measured volume of inoculated mineral medium was prepared containing 100
mg/L of the test substance as the nominal sole source of organic carbon. The
mixture was continuously stirred in a closed flask at a constant
consumption of oxygen was monitored using an electrolytic respirometer
28 days the level of biodegradation achieved for the test material was
5.9 %. The reference substance, sodium benzoate, reached a
biodegradation level of 88.8 % in the same test period. The
test substance was determined to be "Not readily biodegradable"
under the given test conditions.
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