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EC number: 919-979-9 | 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
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Eye irritation
Administrative data
- Endpoint:
- eye irritation: in vitro / ex vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Study Plan date:01. Feb. 2019
Experimental Starting Date: 11. Feb. 2019
Experimental Completion Date: 08. May 2019 - Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
- Report date:
- 2090
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 492 (Reconstructed Human Cornea-like Epithelium (RhCE) Test Method for Identifying Chemicals Not Requiring Classification and Labelling for Eye Irritation or Serious Eye Damage)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Ozonized Tetramers and Pentamers
- IUPAC Name:
- Ozonized Tetramers and Pentamers
- Reference substance name:
- Unknown impurities
- IUPAC Name:
- Unknown impurities
- Reference substance name:
- Free Ozonized Acids
- IUPAC Name:
- Free Ozonized Acids
- Reference substance name:
- Ozonized Trimers
- IUPAC Name:
- Ozonized Trimers
- Reference substance name:
- Ozonized Dimers
- IUPAC Name:
- Ozonized Dimers
- Reference substance name:
- Ozonized Triglycerides
- IUPAC Name:
- Ozonized Triglycerides
- Test material form:
- other: oiy gel
Constituent 1
impurity 1
Constituent 2
Constituent 3
Constituent 4
Constituent 5
Test animals / tissue source
- Species:
- human
- Strain:
- other: EpiOcular(TM) (OCL-200, OCL-212 EIT), Keratinocyte Strain 4F1188
- Details on test animals or tissues and environmental conditions:
- Specification
Commercially available EpiOcularTM kit.
The EpiOcularTM tissue consists of normal, human-derived keratinocytes which have been cultured to form a stratified squamous epithelium similar to that found in the human cor-nea. It consists of highly organized basal cells. These cells are not transformed or trans-fected with genes to induce an extended life span. The EpiOcularTM tissues are cultured in specially prepared cell culture inserts with a porous membrane through which nutrients can pass to the cells. The tissue surface is 0.6 cm2.
Origin
EpiOcularTM tissues were procured from MatTek In Vitro Life Science Laboratories, Mlynské Nivy 73, 82105 Bratislava, Slovakia.
Main Test:
Designation of the kit: OCL-212-EIT
Day of delivery: 17. Feb. 2019
Batch no.: 27091
Additional Test with freeze killed tissues:
Designation of the kit: OCL-200-EIT
Day of delivery: 23. Jan. 2018
Batch no.: 27020
The tissues were placed in the freezer on the day of delivery and stored in the freezer until use.
Demonstration of Proficiency
The validity of the EpiOcularTM test at LAUS GmbH was demonstrated in a proficiency study. For this purpose 15 proficiency chemicals (indicated by the OECD 492 guideline) were tested. All of the 15 proficiency chemicals were correctly categorized. Therefore, the proficiency of the EpiOcularTM test was demonstrated.
Test system
- Vehicle:
- unchanged (no vehicle)
- Controls:
- yes, concurrent positive control
- yes, concurrent negative control
- Amount / concentration applied:
- 50 µL of the controls and the test item were applied
- Duration of treatment / exposure:
- 28 minutes
- Duration of post- treatment incubation (in vitro):
- 12 minutes serum-free DMEM at room temperature (post-soak).
120 minutes at 37 ± 1 °C, 5 ± 1 % CO2 and ≥ 95% relative humidity (post-treatment) - Number of animals or in vitro replicates:
- 2 replicates
- Details on study design:
- Preparations:
On the day of the start of the experiment, the MTT concentrate was thawed. The MTT concentrate was diluted with assay medium directly before use.
The assay medium was warmed in the water bath to 37 ± 1°C.
6-well-plates were labelled with test item, negative control and positive control and filled with 1 mL assay medium in the appropriate wells.
All inserts were inspected for viability and the presence of air bubbles between agarose gel and insert. Viable tissues were transferred in the prepared 6-well-plate and incubated at 37 ± 1 °C, 5 ± 1 % CO2 and ≥ 95% relative humidity for 1 hour.
After the pre-incubation, the medium was replaced and the wells were filled with 1 mL fresh assay medium. All 6-well-plates were incubated at 37 ± 1 °C, 5 ± 1 % CO2 and ≥ 95% relative humidity for 16 hours and 59 minutes.
Exposure and Post-Treatment:
After overnight incubation, the tissues were pre-wetted with 20 µL DPBS buffer and then incubated at 37 ± 1 °C, 5 ± 1 % CO2 and ≥ 95% relative humidity for 29 minutes. After that, 50 µL of the controls and the test item were applied in duplicate in one- minute- in-tervals. This was done in such a fashion that the upper surface of the tissue was covered. At the beginning of each experiment (application of negative controls), a stop watch was started. After dosing the last tissue, all plates were transferred into the incubator for 28 minutes at 37 ± 1 °C, 5 ± 1 % CO2 and ≥ 95% relative humidity.
At the end of the exposure time, the inserts were removed from the plates in one- minute-intervals using sterile forceps and rinsed immediately. The inserts were thoroughly rinsed with DPBS. Then, the tissues were immediately transferred to and immersed in 5 mL of pre-warmed assay medium in a pre-labelled 12-well plate for 12 minutes post soak at room temperature.
After that, each insert was removed from the medium, the medium was decanted off the tissue and the insert was blotted on absorbent material and transferred into the respective well of a pre-labelled 6-well plate containing 1 mL assay medium. For post-treatment incu-bation, the tissues were incubated for 120 minutes at 37 ± 1 °C, 5 ± 1 % CO2 and ≥ 95% relative humidity.
After the post-treatment incubation, the MTT assay was performed.
MTT Assay and Extraction:
A 24-well-plate was prepared with 300 µL freshly prepared MTT solution in each well. The tissue inserts were blotted on absorbent material and then transferred into the MTT solu-tion. The plate was incubated for 180 minutes at 37 ± 1 °C, 5 ± 1 % CO2 and ≥ 95% rela-tive humidity.
At last, each insert was thoroughly dried and set into a pre-labelled 6-well-plate, containing 2 mL isopropanol, taking care that no isopropanol was flowing into the tissue insert. The plate was firmly sealed to avoid evaporation of the solvent and stored in the refrigerator overnight. On the next day the plate was shaken for 2 hours at room temperature, pro-tected from light.
Measurement:
The inserts were removed from the 6-well plate and discarded. The content of each well was thoroughly mixed in order to achieve homogenisation.
From each well, two replicates with 200 µL solution (each) were pipetted into a 96-well-plate. Eight wells with 200 µL isopropanol were pipetted also. The plate was read in a plate spectrophotometer at 570 nm.
Results and discussion
In vitro
Results
- Irritation parameter:
- other:
- Remarks:
- Mean viability (%)
- Run / experiment:
- exposure time: 28 minutes
- Value:
- 66.7
- Vehicle controls validity:
- not applicable
- Negative controls validity:
- valid
- Positive controls validity:
- valid
- Remarks on result:
- no indication of irritation
- Other effects / acceptance of results:
- Under the conditions of the test, Reaction Products of olive oil and ozone (NOVOX) is considered non-eye irritant in the EpiOcularTM Eye Irritation Test.
After treatment with the test item, the mean value of relative tissue viability was reduced to 66.8 %. This value is above the threshold for eye irritation potential (≤ 60%).
All validity criteria were met. The criterion for optical density of the negative control was fulfilled: The OD value was 2.1 (> 0.8 and < 2.5).
The positive control induced a decrease in tissue viability as compared to the negative control to 37.1%. Variation within the replicates of the controls and the test item was ac-ceptable (< 20%).
For these reasons, the result of the test is considered valid.
Any other information on results incl. tables
1 Findings and Results
1.1 Measured Values Main Test
As blank, the optical density of isopropanol was measured in eight wells of the 96-well-plate. The measured values and their mean are given in the following table:
Table 9.1‑a Absorbance Values Blank Isopropanol (OD at 570 nm)
Replicate | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Mean |
Absorbance | 0.033 | 0.033 | 0.033 | 0.034 | 0.033 | 0.034 | 0.033 | 0.034 | 0.033 |
The absorbance values of negative control, test item and positive control are given in the following table:
Table 9.1‑b Absorbance Values Negative Control, Positive Control and Test Item (OD at 570 nm)
Designation | Measurement | Negative Control | Positive Control | Reaction Products of olive oil and ozone (NOVOX) |
Tissue 1 | 1 | 2.095 | 0.804 | 1.623 |
2 | 2.067 | 0.787 | 1.607 | |
Tissue 2 | 1 | 2.090 | 0.787 | 1.339 |
2 | 2.087 | 0.796 | 1.338 |
From the measured absorbances, the mean of each tissue was calculated, subtracting the mean absorbance of isopropanol as given in table 9.1-a (= corrected values).
Table 9.1‑c Mean Absorbance Negative Control, Positive Control and Test Item
Designation | Negative Control | Positive Control | Reaction Products of olive oil and ozone (NOVOX) |
Mean – blank (Tissue 1) | 2.048 | 0.763 | 1.582 |
Mean – blank (Tissue 2) | 2.056 | 0.859 | 1.306 |
1.2 Comparison of Tissue Viability
For the test item and the positive control, the following percentage values of tissue viability were calculated in comparison to the negative control:
Table 9.2‑a % Viability Positive Control and Test Item
Designation | Positive Control | Reaction Products of olive oil and ozone (NOVOX) |
% Viability (Tissue 1) | 37.2% | 77.1% |
% Viability (Tissue 2) | 37.0% | 63.6% |
% Viability Mean | 37.1% | 70.4% |
1.3 Measured Values of the Additional Test for Direct MTT Reduction
The absorbance values of negative control and test item with freeze-killed tissues are given in the following table:
Table 9.3‑a Absorbance Values Blank Isopropanol (OD at 570 nm)
Replicate | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Mean |
Absorbance | 0.033 | 0.033 | 0.033 | 0.033 | 0.034 | 0.033 | 0.033 | 0.033 | 0.033 |
The absorbance values (freeze-killed tissues) of negative control and test item are given in the following table:
Table 9.3‑b Absorbance Values (freeze-killed tissues) of Negative Control and Test Item
(OD at 570 nm)
Designation | Measurement | Negative Control | Reaction Products of olive oil and ozone (NOVOX) |
Tissue 1 | 1 | 0.076 | 0.152 |
2 | 0.074 | 0.151 | |
Tissue 2 | 1 | - | 0.148 |
2 | - | 0.146 |
From the measured absorbances, the mean of each tissue was calculated, subtracting the mean absorbance of isopropanol as given in table 9.3-a (= corrected values):
Table 9.3‑c Mean Absorbance (freeze-killed tissues) of Negative Control and Test Item
Designation | Negative Control | Reaction Products of olive oil and ozone (NOVOX) |
Mean – blank | 0.042 | 0.119 |
Mean – blank | - | 0.114 |
The corrected mean of the negative control (freeze-killed tissue) was subtracted from the corrected mean values of the OD of the test item (freeze-killed tissues):
Table 9.3‑c Corrected Mean Absorbance of Test Item (freeze-killed tissues)
Designation | Reaction Products of olive oil and ozone (NOVOX) |
Mean – corrected mean of the negative control (freeze-killed) (Tissue 1) | 0.077 |
Mean – corrected mean of the negative control (freeze-killed) (Tissue 2) | 0.072 |
1.4 Comparison of Tissue Viability
For the test item (freeze-killed tissues) the following percentage values of tissue viability were calculated in comparison to the negative control of the main test:
Table 9.4‑a % Viability of Test Item (freeze-killed tissues)
Designation | Reaction Products of olive oil and ozone (NOVOX) |
% Viability (freeze-killed tissue 1) | 3.7% |
% Viability (freeze-killed tissue 2) | 3.5% |
% Mean viability (freeze-killed tissues) | 3.6% |
1.5 Corrected Tissue Viability of Test Item
The mean value of “% Viability (freeze-killed)” (table 9.4-a) was subtracted from “% Viability” of the main test (table 9.2-a).
Table 9.5‑a % Corrected Viability of Test Item
Designation | Reaction Products of olive oil and ozone (NOVOX) |
% Mean viability (main test) | 70.4% |
% Mean viability (freeze-killed tissues) | 3.6% |
% Corrected mean viability | 66.8% |
Note: All excel calculations were performed with unrounded values. Therefore, re-calculation with rounded values may lead to slightly different results
1.6 Assessment
Eye hazard potential is assessed using the criteria given in the following table:
Table 9.6‑a Assessment of Eye Hazard Potential
% Viability | Assessment | UN GHS classification |
> 60 % | Non eye irritant | No Category |
≤ 60 % | At least eye irritant | No prediction can be made (category 1 or 2) |
1.7 Validity
Validity criteria and results are stated in the following table:
Table 9.7‑a Validity
Criterion | Demanded | Found (Main Test) |
Mean OD of negative control | > 0.8 and < 2.5 | 2.1 |
% mean relative viability of positive control | < 50% of negative control | 37.1% |
Variation within replicates | < 20% | 0.4% (negative control) |
Values for negative control and for positive control were within the range of historical data of the test facility (see page 22).
Therefore, the experiment is considered valid.
Applicant's summary and conclusion
- Interpretation of results:
- other: CLP criteria for eye irritation not meet. No classification is required according to Regulation (EC) 1272/2008
- Conclusions:
- CLP: non eye irritant. Not classified.
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