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Diss Factsheets
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EC number: 271-091-4 | CAS number: 68515-49-1
- 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
Phototransformation in air
Administrative data
- Endpoint:
- phototransformation in air
- Type of information:
- (Q)SAR
- Adequacy of study:
- key study
- Study period:
- 2022
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
Data source
Referenceopen allclose all
- Reference Type:
- publication
- Title:
- Unnamed
- Year:
- 1 993
- Reference Type:
- publication
- Title:
- Kinetics and mechanisms of the gas-phase reactions of the hydroxyl radical with organic compounds
- Author:
- Atkinson R
- Year:
- 1 989
- Bibliographic source:
- J Chem Phys Ref Data Monographs 1, 103.
- Reference Type:
- publication
- Title:
- Unnamed
- Year:
- 1 988
- Reference Type:
- other: computer program
- Title:
- Unnamed
- Year:
- 2 010
- Reference Type:
- other: Computer QSAR model
- Title:
- Unnamed
- Year:
- 2 021
- Report date:
- 2021
Materials and methods
- Principles of method if other than guideline:
- Software tool(s) used including version: EPISuite v4.10
Model(s) used: Aopwin v1.92a
Model description: see field 'Attached justification'
Test material
- Reference substance name:
- 1,2-Benzenedicarboxylic acid, di-C9-11-branched alkyl esters, C10-rich
- EC Number:
- 271-091-4
- EC Name:
- 1,2-Benzenedicarboxylic acid, di-C9-11-branched alkyl esters, C10-rich
- Cas Number:
- 68515-49-1
- Molecular formula:
- C28 H46 O4
- IUPAC Name:
- 1,2-Benzenedicarboxylic acid, di-C9-11-branched alkyl esters, C10 rich
- Reference substance name:
- 1,2-benzenedicarboxylic acid, di-C9,C10 and C11 branched alkyl ester, C10 Rich
- IUPAC Name:
- 1,2-benzenedicarboxylic acid, di-C9,C10 and C11 branched alkyl ester, C10 Rich
- Details on test material:
- SMILES notation used: O=C(c1ccccc1C(=O)OCCCCCCCC(C)C)OCCCCCCCC(C)C
Constituent 1
Constituent 2
Study design
- Light source:
- sunlight
- Details on test conditions:
- Temperature: 25°C.
Sensitizer: OH radical.
Concentration of Sensitizer: 1.5 E6 OH radicals/cm3.
Results and discussion
Dissipation half-life of parent compound
- DT50:
- >= 4.3 - <= 5.2 h
- Test condition:
- Estimated value
- Transformation products:
- not specified
Any other information on results incl. tables
In the environment, organic chemicals emitted into the troposphere are degraded by several important transformation processes. The dominant transformation process for most compounds is the daylight reaction with hydroxyl (OH-) radicals (Atkinson, 1988, 1989). The rate at which an organic compound reacts with OH- radicals is a direct measure of its atmospheric persistence (Meylan and Howard, 1993). AOPWIN estimates the rate constant for the atmospheric, gas-phase reaction between photochemically produced hydroxyl radicals and organic chemicals. The rate constants estimated by the program are then used to calculate atmospheric half-lives for organic compounds based upon average atmospheric concentrations of hydroxyl radicals. Since the reactions only take place in the presence of sunlight, the atmospheric half-lives are normalized for a 12-hour day.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- The photodegradation half-life as mediated by OH- attack is estimated as 0.355 to 0.434 days or 4.3 to 5.2 hours based on a 12-hour sunlight day, a degradation rate of 30.1645 E-12 to 24.6469 E-12 cm³/molecule*sec, and an average OH-concentration of 1.5E6 OH-/cm3.
- Executive summary:
Indirect photochemical degradation of DIDP as mediated by OH- attack is estimated to have a half-life <0.43 days or 5.2 hours based on a 12-hour sunlight day, a rate <24.6E-12 cm3/molecule*sec, and an average OH- concentration of 1.5E6 OH-/cm3. A 12-hour day half-life value normalizes degradation to a standard day light period during which hydroxyl radicals needed for photolysis are generated in the atmosphere. Although DIDP has the potential to degrade rapidly by OH- attack, multimedia distribution modeling indicates DIDP is predicted to partition negligibly (0.1%) to the air compartment because it has a low vapor pressure (0.000051 Pa). Although DIDP has a relatively short atmospheric oxidation half-life (<5.2 hours), this process is unlikely to contribute significantly to the loss of DIDP from the environment.
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