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EC number: 201-622-7
CAS number: 85-68-7
Hydrolysis and phototransformation in water are expected to be
insignificant. However, there is evidence of phototransformation in air.
The European Union Risk Assessment Report for BBP gives a half life of
1.5 days (GEMS, 1984), and also of 17 hours using the TGD default OH
radical concentration. The RAR uses the longer half life of 1.5 days in
the EUSES calculations.
The AOPWIN model (v1.92) which forms part of EPI Suite, estimates a
half-life of 11.616 hours. We have included this as a key study for this
endpoint. However, since the TGD default OH radical concentration is the
higher value, and we do not have access to the GEMS model, we use this
value in this assessment.
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