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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
Toxicity to soil microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
28 d Soil nitrogen transformation test.
Key value for chemical safety assessment
- Long-term EC10 or NOEC for soil microorganisms:
- 1 000 mg/kg soil dw
Additional information
In order to determine the effects of Tetrabromobisphenol A on soil microorganisms, a nitrogen transformation test was performed according to OECD Guideline 216. Natural soil was field-collected and amended with powdered alfalfa as an organic substrate. TBBPA was added directly to soil to give nominal concentrations of 10, 32, 100, 316 and 1000 mg/kg soil dw. Soils were incubated at 20 °C for 28 days, with ammonium, nitrite and nitrate generation measured on days 0, 7, 14, and 28. As a clear concentration-response relationship between TBBPA treatment and nitrogen transformation could not be established using these measures, the 28-day EC10 value for inhibition of nitrogen transformation was established as greater than 1000 mg TBBPA/ kg soil d.w. Consequently, based on these findings, it is unlikely that TBBPA exerts any significant toxic effects on soil microorganisms.
In a supporting study, an investigation of the toxicity of the test material to nitrifying bacteria was carried out as part of a series of bioassays that also determined the test material toxicity to a plant species and a soil invertebrate. The study was conducted using methodology similar to that in the standardised guideline ISO 14238.
An inoculum was prepared from a sandy loam soil collected at Askov, Jutland and was exposed to the test material at concentrations of 1, 10, 100 and 1000 mg/kg soil dw for 4 weeks.
Under the conditions of the test, at 1000 mg/kg there was a significant effect on soil nitrification and the estimated corresponding EC10 value was 295 mg/kg (95 % CL 210 – 390 mg/kg).
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