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Diss Factsheets
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EC number: 218-002-7 | CAS number: 2035-93-0
- 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
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.036 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.361 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.004 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 1.8 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.558 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.056 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 0.09 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
PNECs were derived based on test data following standard guidelines. All data are considered to be reliable and relevant for the endpoint concerned.
Short-term aquatic data in freshwater are available for three trophic levels for the test item. The most sensitive endpoint was determined to be fish, with a LC50 of 36.12 mg/L (Hairong 2016). This endpoint was used to derive the PNECs for freshwater, marine water and intermittent releases by assessment factor method, and freshwater sediment, marine sediment and soil by equilibrium partitioning approach.
For derivation of the PNEC for STP, the NOEC of 18 mg/L was taken from the toxicity control of a ready biodegradability test. A PNEC of 1.8 mg/L is derived by applying an assessment factor of 10.
The test item has low vapour pressure (7.4, 10.6 and 54.3 Pa at 20, 25 and 50°C, respectively (Smeykal 2015), therefore it is not a precursor to ozone formation and is not expected to be a significant contribution to global warming. The test item is not an ozone depleting substance as defined by the Montreal Protocol and does not contain chemical constituents that would lead to acidification.
No hazard is expected from secondary poisoning. The measured log Kow value of 2.82 indicates that the test item is not potentially bioaccumulative. Since the test item has no bioaccumulation potential, a secondary poisoning assessment is not required.
Conclusion on classification
Acute aquatic data are available for three trophic levels for the test item. The most sensitive endpoint was determined to be fish, with a 96-hour LC50 of 36 mg/L (Noack 2016). The 48-hour EC50 for immobilisation of Daphnia was determined to be 39.8 mg/L (Noack 2015). The 72-hour EC50 for growth rate of algae, P. subcapitata was determined to be 57.6 mg/L (Scheerbaum 2015).
Chronic aquatic data are available only for algae (72-h EC10 = 14.7 mg/L, Scheerbaum 2015). The test item achieved biodegradation of 47 % after 28 days and therefore is considered to be not readily biodegradable (Maischak 2015).
As the EC10 value determined in the algae study is > 1 mg/L and the substance is not readily biodegradable, based on chronic data the test item is not classified as hazardous to the aquatic environment. However, the effect values determined in the short-term aquatic studies are > 10 to ≤ 100 mg/L, and the substance is not readily biodegradable, therefore, by applying the most protective classification, the test item is classified as hazardous to the aquatic environment with a Chronic Category 3 classification.
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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