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EC number: 202-992-2
CAS number: 101-96-2
The evaluation of the stability of 44PD (CAS 101 -96 -2) in the
environment is based on experimental testing data (hydrolysis) and QSAR
estimations. For phototransformation in air, a QSAR for 44PD was done,
while for phototransoformation in water, a QSAR estimate based on 77PD (
a structural analog) was used.
The hydrolysis test on 44PD revealed that the substance is hydrolyses
with the formation of biodegradable hydrolysis products at pH 4, 7 and
9, with the following half lives:
pH 4: ca. 230hr
pH 7: ca. 5.3 hr
pH 9: ca. 1.5 hr
With regard to phototransformation, for the air compartment, a half-life
was estimated for 44PD of 1.095 hr, while in water read across was
performed from 77PD QSAR data, yielding half-lives in light and dark of
2 hr and 4 hr, respectively.
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