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EC number: 231-569-5 | CAS number: 7637-07-2
- 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
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
The acute toxicity value for boron for flannelmouth sucker was estimated at 125 mgB/l and was on the lower end of the wide range reported in the literature.
Key value for chemical safety assessment
Additional information
The most reliable tests of acute effects on fish (4 day duration) show mortality effects (LC50) in the range of 125 to 600 mg-B/L. These include salmonids (Oncorhynchus kisutch, O. tshawtscha) and several endangered species (Gila elegans, Ptychocheilus lucia, Xyrauchen texanus, and Catostomas latipinnis). Juveniles and fry appear to be the most sensitive fish life-stage (Hamilton, 1995; Hamilton and Buhl, 1990).
A few studies reported endpoints in the 5 to 15 mg-B/L range, but these were judged not reliable, or did not have sufficient information to permit data quality review. For example, Turnbull et al. (1954) reported a 24-hour TLm to bluegill of 4.6 mg-B/L in response to the test substance sodium tetraborate decahydrate. However, they also reported a 24-hour TLm of 2389 mg-B/L in response to the test substance boron trifluoride. Their procedure used relatively large fish (ca. 5 g, 7 cm). No information was provided on replication, intervals between test concentrations, or similar operational details. Guhl (1992a) reported 96-hour LC50 for zebrafish of 14.2 mg-B/L, but cited an unpublished study from Henkel KGaA. Terhaar et al. (1976) reported median lethal times for boric acid of 10 hours, exposed to 1750 mg-B/L which was extrapolated to an acute toxicity estimate of 17.5 to 175 mg-B/L. These studies cannot be adequately reviewed or compared to standard protocols, thus they cannot be judged reliable.
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.
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