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EC number: 204-424-9
CAS number: 120-78-5
MBTS is not readily biodegradable with a biodegradability of 0% observed
in 28 days (Bayer AG, 1988). The potential metabolites of MBTS are also
not readily biodegradable and only certain level of degradation was
observed for MBT, BT, BTon and MeSBT when the microorganisms used
adapted under special conditions. Such processes are expected in
biological treatment plant, but not in the environment.
According to the negligible biodegradation of MBTS and its potential
metabolites, no better biodegradability can be expected to be observed
in simulation test and hence to carry out such tests are scientifically
unjustified. MBTS and its potential metabolites are expected to be
non-biodegradable and hence persistent in surface water, sediment and
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