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Diss Factsheets
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EC number: 929-209-3 | 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
Acute Toxicity: oral
Administrative data
- Endpoint:
- acute toxicity: oral
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- May 02 - Nov 05, 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 423 (Acute Oral toxicity - Acute Toxic Class Method)
- GLP compliance:
- yes (incl. QA statement)
- Test type:
- acute toxic class method
- Limit test:
- no
Test material
- Reference substance name:
- 4'-Ethyl-2,3-difluorbiphenyl-4-boronic acid
- EC Number:
- 929-209-3
- Cas Number:
- 1123312-95-7
- Molecular formula:
- C14 H13 B F2 O2
- IUPAC Name:
- 4'-Ethyl-2,3-difluorbiphenyl-4-boronic acid
Constituent 1
Test animals
- Species:
- rat
- Strain:
- Wistar
- Sex:
- female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Source: Charles River Wiga GmbH, Sulzfeld, Germany
- Females (if applicable) nulliparous and non-pregnant: yes
- Age at study initiation: 9 weeks at start of treatment
- Weight at study initiation: 166 g (range from 156 to 173 g)
- Fasting period before study: no
- Housing: grouped
- Diet (e.g. ad libitum): ad libitum
- Water (e.g. ad libitum): ad libitum
- Acclimation period: 5 days
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 21.9 – 24.5°C
- Humidity (%): 44.4 – 62.4%
- Air changes (per hr): 10
- Photoperiod (hrs dark / hrs light): 12/12
Administration / exposure
- Route of administration:
- oral: gavage
- Vehicle:
- other: 0.25% aqueous hydroxypropylcellulose (Methocel® K4M Premium solution, 2.5 g/L distilled water)
- Details on oral exposure:
- VEHICLE
- Concentration in vehicle: 30 and 200 g/L
- Amount of vehicle (if gavage): 10 mL/kg
- Justification for choice of vehicle: well tolerated and established standard vehicle
MAXIMUM DOSE VOLUME APPLIED: 2000 mg/kg bw
DOSAGE PREPARATION (if unusual):
CLASS METHOD (if applicable)
- Rationale for the selection of the starting dose:
Due to the chemical properties of the test item, mortality was not expected at the highest starting dose of 2000 mg/kg. - Doses:
- 300 and 2000 mg/kg bw
- No. of animals per sex per dose:
- 6
- Control animals:
- no
- Details on study design:
- - Duration of observation period following administration: 14 days
- Frequency of observations and weighing: before treatment (day 1) and on day 2, 4, 6, 8, 11, 13 and 15
- Necropsy of survivors performed: yes
- Other examinations performed: clinical signs, body weight,organ weights, gross pathology - Statistics:
- Standard statistical methods have been applied for data processing.
Results and discussion
Effect levels
- Key result
- Sex:
- female
- Dose descriptor:
- LD50
- Effect level:
- > 300 - < 2 000 mg/kg bw
- Based on:
- test mat.
- Mortality:
- Three out of six rats treated with 2000 mg/kg died on day 1 after the last observation. No mortality was seen after treatment with 300 mg/kg during the course of this study.
- Clinical signs:
- other: One rat treated with 300 mg/kg showed locomotor disturbance 3 hours after treatment until the last observation time point on day 1. No clinical signs of toxicity were observed in all other rats treated with 300 mg/kg. All rats treated with 2000 mg/kg show
- Gross pathology:
- No organ alterations were identified during the gross pathological examination.
Applicant's summary and conclusion
- Interpretation of results:
- Category 4 based on GHS criteria
- Conclusions:
- The information for this endpoint study record was obtained from an experimental study. The OECD GLP criteria were met and the methods applied are fully compliant with OECD TG 423. The test material shows an oral LD50 between 300 and 2000 mg/kg bw and must thus be classified as acute toxicity hazard category 4 (300-2000 mg/kg bw).
- Executive summary:
The information for this endpoint study record was obtained from an experimental study. The OECD GLP criteria were met and the methods applied are fully compliant with OECD TG 423. The test material shows an oral LD50 between 300 and 2000 mg/kg bw and must thus be classified as acute toxicity hazard category 4 (300-2000 mg/kg bw).
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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