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EC number: 942-299-9 | 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
Eye irritation
Administrative data
- Endpoint:
- eye irritation: in vitro / ex vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- January 15, 2016 - January 15, 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 016
- Report date:
- 2016
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 437 (Bovine Corneal Opacity and Permeability Test Method for Identifying i) Chemicals Inducing Serious Eye Damage and ii) Chemicals Not Requiring Classification for Eye Irritation or Serious Eye Damage)
- Version / remarks:
- 2013
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU method B.47 (Bovine corneal opacity and permeability test method for identifying ocular corrosives and severe irritants)
- Version / remarks:
- Commission Regulation (EU) No. 1152/2010
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- aluminium cerium lutetium oxide
- EC Number:
- 942-299-9
- Cas Number:
- 1279099-21-6
- Molecular formula:
- Lu2.8-2.99Ce0.01-0.2Al5O12
- IUPAC Name:
- aluminium cerium lutetium oxide
- Test material form:
- solid
Constituent 1
Test animals / tissue source
- Species:
- cattle
- Details on test animals or tissues and environmental conditions:
- SOURCE OF COLLECTED EYES
- Source: Odenwaldschlachthof Brensbach, 64395 Brensbach, Germany
- Characteristics of donor animals: Age: 14 - 36 months; Corneal diameter: 25 - 27 mm
- Storage, temperature and transport conditions of ocular tissue (e.g. transport time, transport media and temperature, and other conditions): The eyes were kept and transported in transport medium cooled on ice.
- Time interval prior to initiating testing: The corneas were prepared immediately after delivery of the eyes to the laboratory.
- indication of any existing defects or lesions in ocular tissue samples: Any corneas that showed macroscopic tissue damage (e.g. scratches, pigmentation, neovascularization) or an opacity >7 opacity units were discarded.
Test system
- Vehicle:
- physiological saline
- Controls:
- yes, concurrent vehicle
- yes, concurrent positive control
- Amount / concentration applied:
- TEST MATERIAL
- Amount applied: 750 µL of the suspended test item (i.e. 150 mg/750 µL)
- Concentration: 20% (w/v) suspension in a 0.9% sodium chloride solution
VEHICLE
- Amount applied: 750 µL - Duration of treatment / exposure:
- 240 min
- Number of animals or in vitro replicates:
- 3
- Details on study design:
- SELECTION AND PREPARATION OF CORNEAS
Freshly isolated bovine eyes of cattle were collected from the slaughterhouse. Excess tissue was removed from the eyes. The eyes were kept and transported in transport medium cooled on ice. The corneas were prepared immediately after delivery of the eyes to the laboratory. All eyes were carefully examined macroscopically for defects. Those presenting defects such as vascularization, pigmentation, opacity or scratches were discarded. The corneas were carefully removed from the eyes using scalpel and rounded scissors. A rim of about 2 to 3 mm of tissue (sclera) was left for stability and handling of the isolated cornea. All corneas used in the study were collected in incubation medium (pre-warmed at 32 ± 1°C) and the corneal diameter of each cornea was measured and recorded.
Each cornea was mounted in a cornea holder (CiToxLAB, Veszprem, Hungary) with the endothelial side against the sealing ring (O-ring) of the posterior part of the holder. The cornea was gently flattened over the O-ring without Stretching the cornea. Afterwards, the anterior part of the holder was positioned on top of the cornea and fixed in place with screws. Both compartments of the holder were filled with incubation medium. The posterior compartment was filled first to return the cornea to its natural convex form.
QUALITY CHECK OF THE ISOLATED CORNEAS
For equilibration, the corneas in the holder were incubated (BSS 160, Grumbach Brutgeräte GmbH, Asslar, Germany) in a vertical position at 32 ± 1°C for about one hour. At the end of the incubation period, the incubation medium was replaced by fresh pre-warmed (32 ± 1°C) incubation medium in both compartments. The baseline opacity was determined with a calibrated opacitometer (BASF-OP2.0, BASF SE, Ludwigshafen, Germany). The light transmission through the corneas, given as lux value, was recorded in a table and thereafter converted into an opacity value (baseline opacity values). Any corneas that showed macroscopic tissue damage (e.g. scratches, pigmentation, neovascularization) or an opacity >7 opacity units were discarded. Three corneas were selected as negative control corneas. The remaining corneas were distributed into treatment and positive control group.
NUMBER OF REPLICATES: 3
NEGATIVE CONTROL USED: No
SOLVENT CONTROL USED: 0.9% sodium chloride solution
POSITIVE CONTROL USED: Imidazole
APPLICATION DOSE AND EXPOSURE TIME: 750 µL of the suspended test item (i.e. 150 mg/750 µL) and 240 min
TREATMENT METHOD: closed chamber
POST-INCUBATION PERIOD: no.
REMOVAL OF TEST SUBSTANCE
- Number of washing steps after exposure period: To remove the test item from the epithelium, the window locking-ring and the glass window from the anterior chamber were removed. The corneas were gently rinsed with wash medium using a syringe. Before measurement of the opacity value after treatment, fresh incubation medium was replaced in both compartments. To remove the solvent and positive control, the corneal surface was washed three times.
METHODS FOR MEASURED ENDPOINTS:
- Corneal opacity: calibrated opacitometer (BASF-OP2.0, BASF SE, Ludwigshafen, Germany)
- Corneal permeability: passage of sodium fluorescein dye measured with the aid of microtiter plate reader (OD490)
- Others: Each cornea was observed visually and pertinent observations were recorded (e.g. tissue peeling, residual test chemical, non-uniform opacity patterns)
SCORING SYSTEM: In Vitro Irritancy Score (IVIS)
DECISION CRITERIA: IVIS <= 3 (no UN GHS category), IVIS > 3; <= 55 (No prediction can be made), IVIS > 55 (UN GHS category 1)
Results and discussion
In vitro
Resultsopen allclose all
- Irritation parameter:
- in vitro irritation score
- Run / experiment:
- Cornea 1/experiment 1
- Value:
- 0.104
- Vehicle controls validity:
- valid
- Negative controls validity:
- not examined
- Positive controls validity:
- valid
- Irritation parameter:
- in vitro irritation score
- Run / experiment:
- Cornea 2/experiment 1
- Value:
- 2.391
- Vehicle controls validity:
- valid
- Negative controls validity:
- not examined
- Positive controls validity:
- valid
- Irritation parameter:
- in vitro irritation score
- Run / experiment:
- Cornea 3/experiment 1
- Value:
- 1.962
- Vehicle controls validity:
- valid
- Negative controls validity:
- not examined
- Positive controls validity:
- valid
- Other effects / acceptance of results:
- OTHER EFFECTS:
- Visible damage on test system: No
DEMONSTRATION OF TECHNICAL PROFICIENCY: Yes
ACCEPTANCE OF RESULTS:
- Acceptance criteria met for negative control: Yes
- Acceptance criteria met for positive control: Yes
Applicant's summary and conclusion
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- The IVIS obtained after treatment with the test item was 1.5 and, thus, lower than 3, i.e. according to UN GHS classification the test item is not requiring classification for eye irritation or serious eye damage.
- Executive summary:
This in vitro study was performed to evaluate the eye hazard potential of the test item by means of the BCOP (Bovine Cornea Opacity and Permeability Assay).
To determine the eye hazard potential the induced opacity and increased permeability was investigated in isolated bovine corneas after exposure to the test item as a 20% (w/v) suspension in a 0.9% sodium chloride solution. As negative control 0.9% sodium chloride solution and as positive control 20% (w/v) Imidazole was used.
Three corneas were used per group (negative control, positive control or test item group).
After a first opacity measurement of the untreated bovine corneas, 750 μL of the suspended test item, positive or negative control were applied on the corneas and incubated for 240 minutes.
After the incubation phase the test item, the positive, and the negative control were rinsed from the corneas and the opacity was measured again.
After the opacity measurements, the permeability of the corneas was determined by application of a fluorescein solution for 90 minutes. The amount of fluorescein solution that crossed the cornea was measured spectrophotometrically.
The opacity and permeability assessments were combined to determine an In Vitro lrritancy Score (IVIS).
All validity criteria were fulfilled.
The IVIS obtained after treatment with the test was 1.5 and, thus, lower than 3, i.e. according to UN GHS classification the test item is not requiring classification for eye irritation or serious eye damage.
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