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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
TBBPA may undergo abiotic degradation. Degradation of TBBPA by light was investigated in both air and water.
Air
To investigate photolysis of the test material, 14-C TBBPA applied to a silica gel surface was irradiated with 254 nm UV light. To determine degradation products of 14-C TBBPA photolysis, larger amounts of the substance were applied to plates and irradiated for 5 days. After this, residues were subjected to analysis.
Initially, TBBPA decreased rapidly with a half-life of about 0.12 day. However, after 0.25 day of UV exposure, the rate of degradation decreased. The half-life of the second phase was determined to be 1.1 day.
Water
A method was developed for studying the phototransformation following UV irradiation of aqueous solutions of tetrabromobisphenol A (TBBPA) and related compounds at various pHs. The rates of decomposition were determined at a concentration of 77 µM in water with an illumination time of 50 minutes.
TBBPA’s rate of decomposition in water under UV irradiation (k x 10³ (s^-1)) ranged from 0.7 (at pH = 10) to 0.033 (at pH = 5.5). Its half-life ranged from 16 (at pH = 10) to 350 (at pH = 5.5) minutes; TBBPA’s half-life at pH 7.4 = 24 minutes. The disappearance quantum yield ranged from 0.045 (pH = 10) to 0.018 (pH = 5.5).
The data indicated that TBBPA was readily photodegraded in aqueous solution. Degradation rates were sensitive to pH; the rate of decomposition of TBBPA was six times higher at pH 8 than at pH 6.
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