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EC number: 219-868-9 | CAS number: 2556-10-7
- 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
General discussion of environmental fate and pathways
Abiotic degradation
Air: Based on estimation with the QSAR model Aopwin the substance undergoes in air rapid degradation after reaction with hydroxyl radicals. The DT50 value after reaction with hydroxyl radicals is 4.5 hours. No reaction with ozone was estimated. Based on the half-life with hydroxyl radicals, 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 is hydrolytically stable at pH 9 (half-life time at 25°C of > 1 year), hydrolytically unstable at pH 7 (half-life time at 25°C of 55 days) and hydrolytically less stable at pH 4 (half-life time at 25°C of 2.0 hours) in an OECD TG 111 study (under GLP). The half-life under environmental conditions is therefore 55 days. This is in line with what is expected because acetals hydrolyse at low pH but less so or not at higher pH.
Biotic degradation
Hyacinth body is not ready biodegradable (52% biodegradation) and not persistent (71% biodegradation) based on read across to Hyacinth body #3 (CAS no. 7493-57-4) in the Closed Bottle test.
Bioaccumulation
Based on the log Kow of 3.5 it can be concluded that the substance has limited bioaccumulation potential with calculated BCF values for aquatic and terrestrial organisms of 188 and 38.8 L/kg, respectively.
Transport and distribution
The adsorption potential of the substance was determined in a study according to OECD TG 121 (HPLC method). Under the conditions of the test, the log Koc of the substance was determined at 2.5 (equivalent Koc = 290 L/kg). Based on this value it may be concluded that the substance has a low potential for adsorption to solid surfaces and soil (logKoc < 3).
A Henry's law constant of 0.672 Pa·m³/mol (at 12 °C) was calculated in EUSES (Vap pressure 3.1 Pa (24°C) , 194.3 molecular weight and 453 mg/l water solubility (24°C). Based on this value the substance has limited potential to partition from water to air.
Based on Level III environmental distribution modelling using EPISUITE (assuming equal and continuous releases to air, water and soil) using the CAS number 2556 -10 -7, it is estimated that the majority of the substance released to the environment will partition mainly into soil (79.1%) and water (20.2%) with small amounts to air (0.43%) and sediment (0.3%).
The SimpleTreat model simulates the distribution of the substance in a Sewage Treatment Plant. Model calculations (default assumptions, local) show that 0% of the substance will be degraded and that 95.3%, 3.48%, and 1.26% will partition to water, sludge 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.
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.