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Diss Factsheets
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EC number: 946-013-3 | CAS number: -
- 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 aquatic invertebrates
Administrative data
Link to relevant study record(s)
- Endpoint:
- short-term toxicity to aquatic invertebrates
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Comparable to guideline study. Pre dates OECD Guideline
- Qualifier:
- according to guideline
- Guideline:
- other: ASTM Standard E 729-80
- GLP compliance:
- not specified
- Analytical monitoring:
- no
- Vehicle:
- no
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- TEST ORGANISM
- Common name: Daphnid
- Source: Brood stock
- Age at study initiation (mean and range, SD): < 24h
- Method of breeding: The brood stock was cultured and maintained in aerated (90-105% saturation) 2.91 - liter animal jars. A 2.0-liter open-ended tube with 1.0 mm nylon bolting cloth affixed to the bottom was contained within each jar to facilitate harvesting first instars. Th screened end of the tube was held approximately 1.5 cm off the bottom by two Pyrex triangles placed one on top of the other. Each tube contained 25 adult daphnids. When the tube was lifted, the adults remained on the screen while the first instars passed into the beaker for harvesting. Each brood stock animal jar contained the appropriate amount of food and water made up to a 2.0 liter volume. The brood stock food, water and glass receptacles were changed 3 time per week. The brood stock was kept in an environmental chamber set at 20 +-1°C and a photoperiod of 16h light : 8h dark. Twenty-four hours before testing, mutiparous females were isolated. The neonates produced by these adults were removed and used for testing within 24h.
- Feeding during test : no feeding during test - Test type:
- static
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 48 h
- Hardness:
- 148 +- 7 mg/L as CaCO3
- Test temperature:
- 20.1 - 20.7
- pH:
- 6.7 - 8.1
- Dissolved oxygen:
- > 60% saturation
- Nominal and measured concentrations:
- The nominal concentrations were : 54, 91, 151, 252, 420 and 700 mg/l as boron
- Details on test conditions:
- TEST SYSTEM
- Test vessel:
- Material, size, headspace, fill volume: 250 ml beakers to which 200 ml of the appropriate amount of test material and water was added.
- Aeration: no aeration during test
- No. of organisms per vessel: 10 neonates
TEST MEDIUM / WATER PARAMETERS
- Source/preparation of dilution water: Lake Huron water was used to culture daphnids and as the test dilution water. This water was carbon-filtered, UV-irradiated and adjusted to a hardness of approximately 170 mg/L as (CaCO3) with CaCl2. The water was then autoclaved at 120°C and 124.1 kPa for 35 min.
- Alkalinity:58 +- 5 mg/L as CaCO3
- Conductivity: 290 +- 21 µmhos/cm
OTHER TEST CONDITIONS
- Photoperiod: 16h light : 8 h dark
EFFECT PARAMETERS MEASURED (with observation intervals if applicable) : Mortality was recorded after 24 and 48h of exposure - Duration:
- 48 h
- Dose descriptor:
- LC50
- Effect conc.:
- 133 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- element
- Basis for effect:
- mortality
- Remarks on result:
- other: 115-153 mg/L
- Details on results:
- - Mortality of control: 7%
- Reported statistics and error estimates:
- The LC50 and 95% confidence intervals were determined. The LC50 values were based on nominal concentrations. Finney's method of probit analysis or the moving angle method was used to calculate the LC50 values.
Reference
Duration | Endpoint | Effect conc. | Nominal/Measured | Conc. based on | Basis for effect | Remarks (e.g. 95% CL) |
---|---|---|---|---|---|---|
48 h | LC50 | 133 mg/L | nominal | element | mortality | |
48 h | LC0 | 54 mg/L | nominal | element | mortality | |
48 h | LC100 | 420 mg/L | nominal | element | mortality |
Description of key information
Key value for chemical safety assessment
Additional information
Short term effects on aquatic invertebrates ranged from 45 to 1376 mg B/L.
These data support a conclusion that borates should not be classified as dangerous for the environment.
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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