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Diss Factsheets
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EC number: 700-989-5 | CAS number: -
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
Description of key information
Biodegradation in sediments
Discussion (sediment testing)
Studies are not available to assess the biodegradability of DIUP 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 23 hours in marine sediments based on results from two studies (Otton et al., 2008). Research suggests that the formation of the monoester occurs as the first step in the biotic degradation of DIDP (Staples et al., 1997). Because this step does not appear to be rate limiting, as evidenced by the high extent of biodegradation demonstrated by DIDP in a ready test, the degradation of the diester in sediment is expected to occur at a similar high rate. Because Di-isodecyl phthalate ester (DIDP) is an analog to DIUP, the mono ester of DIUP is expected to biodegrade in sediment at approximately the same rate as was exhibited by the mono ester of DIDP.
Key value for chemical safety assessment
- at the temperature of:
- 295 K
Additional information
Studies are not available to assess the biodegradability of DIUP 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 DIUP, using treated wastewater that suggest DIUP would demonstrate a high extent of biodegradation under sewage treatment plant (STP) conditions (Furtmann, 1993). DnDP 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.
The elimination of DIUP in a STP through biodegradation and distribution, as reported by the European Commission (2003), was estimated using the SIMPLETREAT model. The model calculated that 94% of DIUP 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 DIUP 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.
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