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EC number: 200-879-2
CAS number: 75-56-9
Propylene oxide was found ready biodegradable (89% after 28 days)
under aerobic conditions in a modified MITI test (MITI 1988). Propylene
oxide is not readily biodegradable under the stringent conditions of a
closed bottle biodegradation test (Shell
Research Ltd., 1985).The available studies indicate
that in general propylene oxide can assumed to be ready biodegradable,
but under certain stringent conditions this may not be the case.
Due to the fact that the substance is
considered ready biodegradable, no significant concentrations are
present in the water and sediment compartments. This is supported by
exposure assessment with EUSES. The maximal local PEC value that was
calculated was 2.31.10-3mg/L for freshwater, 8.65.10-4mg/L
for seawater, 2.37.10-3mg/kg (w. w.) for the freshwater
sediment, 8.87.10-4mg/kg (w. w.) for marine sediment and
0.0013 mg/kg (w.w) for the soil compartment. Since these concentrations
are very low, no significant exposure of the water and sediment
compartments is assumed and therefore simulation tests are not needed.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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