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EC number: 249-079-5
CAS number: 28553-12-0
Conclusion: Hydrolysis will not significantly contribute to the removal of DINP from the environment.
Results from the EQC (Equilibrium
Criterion) Levels I and III distribution models (Mackay, 2001) show that
because of its low water solubility, DINP is not expected to partition
to the water compartment (see Section 4.2.2). However, abiotic
degradation of any trace amounts of DINP which may be present in aquatic
environments is unlikely to occur at a significant rate based on modeled
data. The HYDROWIN model, a
subroutine within the USEPA (2008) computer program, estimates a
hydrolysis half-life for DINP of 3.4 years at pH 7 (25°C) and 125.2
days at pH 8 (25°C).
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