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Diss Factsheets
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EC number: 401-620-8 | CAS number: 87731-18-8 VIOLIFF
- 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
Endpoint summary
Administrative data
Description of key information
Abiotic degradation
Air: Based on estimation with the QSAR model Aopwin the substance undergoes in air rapid degradation after reaction with hydroxyl radicals and ozone. The DT50 value after reaction with hydroxyl radicals is 1.7 hours. Ozone reaction estimate is 1.4 hours. Based on these half-lives, the substance will not reach the stratosphere and is therefore not considered to be a long-range transported chemical in air. The substance does not have an ozone depletion potential because it does not contain halogens and does not have the potential to reach the stratosphere (EU CLP, EC no 1272/2008 and its amendments).
Water: The substance has a half-life at 25 °C of >1 year at pH 4 and pH 7, and 30 days at pH 9.
Biotic degradation
In a biodegradation screening study(OECD TG 301D) activated sewage sludge from an STP treating predominantly domestic sewage was exposed to ca 2 mg/L substance for 28 days. In this test 67% biodegradation was observed at day 28. Although due to study design the 14 -day window criterion could not be assessed, based on the fact that >60% biodegradation was achieved within 15 days, the substance is concluded to be readily biodegradable.
Bioaccumulation
Bioaccumulation in aquatic and terrestrial species is based on the available information (log Kow and calculated BCF values). The BCFs for aquatic and terrestrial organisms were calculated using QSARs of Veith et al. (1979) and Jager (1998), both incorporated in the EUSES model, and yielded values of 58.2 and 10.4 L/kg ww, respectively, using a log Kow of 2.9.
Transport and distribution
The adsorption potential of the test substance was determined in a HPLC screening test according to EU Method C.19 and in compliance with GLP criteria. Solutions of reference substances with known log Koc values based on soil adsorption data and the test substance were analysed by HPLC using a Hypersil H5CPS column. The log k’ values of reference substances were plotted against the known log Koc values. The log Koc value for the test substance was calculated by substituting its mean log k’ in the calibration curve. Under the conditions of the test, the log Koc of the test substance was determined to be 3.16, which is equivalent to a Koc value of 1445 L/kg.
A Henry's law constant of 0.85 Pa·m³/mol (at 12°C) was calculated in EUSES (184.2 g/mol molecular weight, vapour pressure 4.02 Pa (25°C), and 415 mg/L water solubility (18°C)). Based on this value the substance has no potential to partition from water to air under environmental conditions (12°C).
Based on Level III environmental distribution modelling using EPISUITE (assuming equal and continuous releases to air, water and soil) using the SMILES notation O=C(OC1CCC=CCCC1)OC and the measured physico-chemical parameters (water solubility (at 25 °C) and log Kow) as input, it is estimated that the majority of the substance released to the environment will partition mainly into soil (66.7%) and water (32.5%) with small amounts to air (0.5%) and sediment (0.3%).
The SimpleTreat model, which is incorporated in EUSES simulates the distribution of the substance in a Sewage Treatment Plant based on vapour pressure, water solubility, log Koc and ready biodegradability. Model calculations show that 77% of the substance will be degraded, and that 11.5 %, 11.3%, and 0.3% will partition to sludge, water, and air, respectively.
Additional information
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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