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EC number: 202-849-4
CAS number: 100-41-4
Ethylbenzene is a volatile substance
which is difficult to test for biodegradation in the experimental
systems. The estimated QSARs data on environmental degradation of
ethylbenzene are summarized in table below. Overall, the QSAR estimated
data suggest that this substance will degrade fast in the environment.
Table. Degradation rates of ethylbenzene
Degradation rate in water:
Hydrolysis is not a relevant degradation route for the substance.
DT50= 15 days (360 hours)
Degradation rate in sediment:
DT50= 135 days (3240 hours)
Degradation rate in soil:
DT50=30 days (720 hours)
Degradation rate in air:
DT50 (for reaction with hydroxyl radicals)= 1.8 days
Based on the data summarized here,
ethylbenzene is considered to degrade rapidly via abiotic or biotic
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