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EC number: 204-340-2
CAS number: 119-64-2
to a Mackay Level I model calculation the main target compartment for
1,2,3,4-tetrahydronaphthalene will be the atmosphere (94.6 %) followed
by the hydrosphere (2.7 %), sediment and soil (1.3 % each). The
experimental Henry’s Law constant of 138 Pa m3/mol at 20 °C indicates
high volatility of 1,2,3,4-tetrahydronaphthalene from surface waters.
With an experimental Koc of 501 l/kg, the sorption potential of
1,2,3,4-tetrahydronaphthalene to soil or sediment organic matter is
expected to be moderate (Blume scale).
rate constant for the OH sensitized photodegradation of
1,2,3,4-tetrahydronaphthalene was measured as
(3.43 +- 0.06) x 1E-11 cm3/(molec. x s). At 500,000 OH radicals / cm3
(typical 24-hour mean in central Europe), this corresponds to a
half-life of 11.2 hours. There are numerous publications indicating that
tetrahydronaphthalene is biodegradable and it is used as carbon and
energy source by several bacteria strains.Biodegradation
and atmospheric OH sensitized photodegradation are expected to be the
predominant ways of removal from the environment while photolytical or
hydrolytical degradation in surface water are expected to be of minor
importance. The partition coefficient 1-octanol/water of1,2,3,4-tetrahydronaphthaleneis
log Kow = 3.78 at 23 °C, indicating a significant potential for
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