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EC number: 700-989-5
CAS number: -
Short-term toxicity to fish:Results from short term studies with several species of fish on an analog substance demonstrate that DIUP does not cause toxicity at the maximum achievable aqueous concentrations investigated in these tests (i.e. in excess of water solubility).
results of acute fish toxicity studies are reported as LC50and
NOEC values. The NOEC values represent the highest concentration
measured in these studies that did not demonstrate mortality. In all
cases this was the highest concentration attainable and measured under
the conditions of the study. The use of the NOEC values reported in the
results overview table to derive values for quantitative risk assessment
is inappropriate as they are not true NOEC values.
These data suggest that DIUP will also not
produce acute toxicity to fish. The data used to characterize DIUP are
for diundecyl phthalate (DUP; CAS #3648 -20 -2) ester, which is an
analog to DIUP. Both DIUP and DUP contain undecyl alkyl groups. Whereas
DUP contains linear undecyl alkyl groups, the alkyl groups in DIUP are
branched. Therefore, because of the structural similarity between these
substances and the similar biological behavior of high molecular weight
phthalate esters in general, data for the analog can be used to
characterize the biological effects of DIUP for this endpoint.
Staples et al. (1997). Aquatic toxicity of
eighteen phthalate esters. Environ. Toxicol. Chem. 16(5): 875 -891.
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