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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
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
- Daphnia magna: 13.9 mg B/L (end criterion: reproduction)
- Hyalella azteca: 6.3 mg B/L (effect criterion: reproduction)
- Chironomus riparius: 20.1 mg B/L (effect criterion: emergence)
- Brachionus calyciflorus: 24.6 mg B/L (effect criterion: growth)
- Lampsilis siliquoidea: 30 mg B/L (effect criterion: biomass shell length)
Relevant and reliable chronic reference values (NOEC/EC10) that could be used for risk assessment purposes (PNEC) were identified for four different species, representing crustaceans, insects and rotifers. The values shown here represent ‘added’ concentration levels and may therefore deviate slightly from values reported elsewhere. No-effect levels range between 6.3 mg B/L and 24.6 mg B/L, with the amphipod H.azteca being the most sensitive invertebrate species.
No reliable long-term studies with marine invertebrates were identified in scientific literature.
Key value for chemical safety assessment
Additional information
The identified reliable long-term data for invertebrate species were used for the determination of a PNEC for the freshwater environment, using the statistical extrapolation method. All reported effect levels were generated with boric acid as test substance, and test concentrations in the test media were verified. The reference value for the cladoceran D.magna represents the geometric mean of several studies that assessed reproduction as effect criterion.
All other values represent the outcome of individual studies that were conducted with the respective species.
Additional information on the different long-term studies with invertebrates can be found in the Tables and 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.