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Diss Factsheets
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EC number: 201-236-9 | CAS number: 79-94-7
- 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
Additional information
Distribution modelling
TBBPA's transport and distribution between environmental compartments was modelled using EPISuite v3.20, based on the chemical's structure. EPI v3.20 was used because later versions of this software included incorrect values in its reference library for certain brominated flame retardants.
Over 99% of TBBPA released to the environment is predicted to partition to soil (53%) and sediment (46%). Negligible amounts are predicted to partition to water (0.6%) and air (0.00008%) (Level III Fugacity Model; Emissions of 1000 kg/hr to each of air, water and soil). In soil and sediment, TBBPA is expected to bind extensively to organic carbon (estimated Koc soil = 6.5 x 10^6). Movement into groundwater is not expected based on this Koc and measured water solubility. TBBPA is expected to partition from water to organic carbon (Koc = 5.6 x 10^5). TBBPA is not expected to volatilize from water (Volatilization half-life in rivers = 6.7 x 10^5, in lakes = 7.3 x 10^6). In air, TBBPA is expected to be bound to particulates; the fraction sorbed to particulates is estimated to be 1 at 25 °C (AEROWIN v1.00). Its movement in the atmosphere will be governed by the particles to which it is bound. Sewage treatment plants are predicted to remove TBBPA from the influent to a high degree (94%), but biodegradation in the treatment plant is not expected. Removal in the treatment plant will be by partitioning to sludge. Leaching from polymers in which TBBPA is used is not expected, in part because its primary use is as a reactive flame retardant in printed circuit boards. However, due to its physical/chemical properties it is not expected to leach from polymers where it is used as an additive.
Other distribution data
In a chamber test performed with a personal computer housing containing TBBPA (Kemmlein et al. 2003), the emissions of TBBPA was measured. Due to its phenolic character, TBBPA has relatively low vapour pressure and tends to adsorb to surfaces. Over a 150-d test, no emission could be detected from the PC housing but measurement of TBBPA in the solvent used to rinse the test chamber walls showed 356 ng/m² of TBBPA on the chamber surfaces. Using this value, the area specific emission rate (SERa) was calculated to be 0.4 ng/m²/ h. The conclusion from the data is that losses from the computer housing were low.
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