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Diss Factsheets
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EC number: 231-151-2 | CAS number: 7440-42-8
- 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
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Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
Description of key information
Data for twenty-eight different species are included in the PNEC derivation, and their ecotoxicity reference values range from 7.2 mg B/kg dw for the corn Zea mays (effect criterion: root yield) to 56.0 mg B/kg for the spanisg onion Allium cepa (effect criterion: shoot length). Data are based on added doses (nominal or measured) as background concentrations are not always available and the added risk approach is followed because of the significant difference in bioavailability between boron naturally present in soils and added soluble B.
Key value for chemical safety assessment
Additional information
The 192 individual high-quality NOEC/EC10 values that were considered to be reliable/relevant for the derivation of a PNEC for rhe terrestrial compartment range from 3 mg B/kg for barley root elongation in Zwijnaarde soil (Van Laer et al., 2010) to 84.0 mg B/kg for wheat shoot length, canola shoot yield and western wheat grass root yield (Aquaterra, 1998).The identified reliable long-term data for the soil plant species were used for the determination of a PNEC for the terrestrial compartment - using the statistical extrapolation method. All reported effect levels were generated with boric acid as test substance (one exception: test with M.sativa, using disodium tetraborate, anhydrous).
A large number of papers from the literature were assessed, however only a limited toxicity dataset could be created due to the poor quality of most of the data. References for studies with data on long term single-species toxicity tests resulting in NOEC/EC10 values from hydroponic/sand cultures for higher plants are presented as supporting information in the appendix from the “Boron effects assessment in the terrestrial compartment” report. Further additional information on boron toxicity to the terrestrial compartment can also be found in the Background Document “Environmental effects assessment of boron”, which is attached in the technical dossier in IUCLID Section 13.
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.
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