Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 271-089-3
CAS number: 68515-47-9
Discussion (sediment testing)Studies are not available to assess the biodegradability of DTDP in sediment. Although there are no data specifically for the diester, there are biodegradation data for the monoester of DIDP (mono-isodecyl phthalate, MIDP) that showed an average half-life of 25 ± 6 hours in marine sediments based on results from two replicates (Otton et al., 2008). The investigators also evaluated the biodegradability of other mono phthalate esters (MPEs) in marine sediment and some MPEs in freshwater sediments and found that, in general, all the MPEs exhibited relatively similar half-lives in marine and freshwater sediment, ranging from 16 to 39 hours. Based on biodegradation data for other MPEs in freshwater sediments, MIDP would also be expected to exhibit a half-life in freshwater sediment equivalent to its half-life in marine sediment.Because Di-isodecyl phthalate ester (DIDP) is an analog to DTDP, the mono ester of DTDP is expected to biodegrade in sediment at approximately the same rate as was exhibited by the mono ester of DIDP. Research suggests that the formation of the monoester occurs as the first step in the biotic degradation of di phthalate esters such as DIDP and DTDP (Staples et al., 1997). Because this step does not appear to be rate limiting, as evidenced by moderate to rapid biodegradation in ready tests, the degradation of the diester in sediment is expected to occur at a similar high rate to the monoester.
are not available to assess the biodegradability of DTDP under simulated
conditions (i.e., wastewater treatment). However, there are data for
di-n-decyl phthalate (CAS No. 84-77-5; DnDP), an analog to DTDP, using
treated wastewater that suggest DTDP would demonstrate a high extent of
biodegradation under sewage treatment plant (STP) conditions (Furtmann,
biodegraded 82% after 7 days based on the disappearance of the parent
compound from the test system. The initial DnDP concentration was 7.8
μg/l and the DT50 was <1 day.
elimination of DTDP in a STP through biodegradation and distribution was
estimated using the SIMPLETREAT model. The model calculated that 92% of
DTDP would be eliminated in a STP, which is consistent with the high
loss reported by Furtmann (1993). The measured data for DnDP and the
modeled data suggest that DTDP will be largely eliminated in a STP.
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.
Questo sito web si avvale di cookie affinché possiate usufruire della migliore esperienza sui nostri siti web.
Welcome to the ECHA website. This site is not fully supported in Internet Explorer 7 (and earlier versions). Please upgrade your Internet Explorer to a newer version.
Do not show this message again