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EC number: 214-307-4 | CAS number: 1120-44-1
- 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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Endpoint summary
Administrative data
Description of key information
Key value for chemical safety assessment
Skin irritation / corrosion
Link to relevant study records
- Endpoint:
- skin irritation: in vitro / ex vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 11. May- 13. July 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 439 (In Vitro Skin Irritation: Reconstructed Human Epidermis Test Method)
- Version / remarks:
- Version 439, 28. July 2015
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.46 (In Vitro Skin Irritation: Reconstructed Human Epidermis Model Test)
- Version / remarks:
- dated 24. Aug. 2009
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Specific details on test material used for the study:
- Name: Copper dioleate
Batch no.: 21092015
Appearance: Green, solid/paste
Composition: Cu-dioleate.
Purity: > 99 %, IR.
Homogeneity: homogeneous
Expiry date: 21. Sep. 2018
Storage: Room Temperature (20 ± 5°C) - Test system:
- human skin model
- Remarks:
- EpiDermTM
- Source species:
- human
- Cell type:
- non-transformed keratinocytes
- Cell source:
- other: EpiDermTM tissue consists of human-derived epidermal keratinocytes
- Source strain:
- other: Human derived keratinocytes
- Details on animal used as source of test system:
- The test system is a commercially available EpiDermTM-Kit, procured by MatTek.
The EpiDermTM tissue consists of human-derived epidermal keratinocytes which have
been cultured to form a multi-layered, highly differentiated model of the human epidermis.
It consists of organized basal, spinous and granular layers, and a multi-layered stratum
corneum containing intercellular lamellar lipid layers representing main
lipid classes analogous to those found in vivo. The EpiDermTM tissues are cultured on specially
prepared cell culture inserts. - Vehicle:
- unchanged (no vehicle)
- Details on test system:
- The test system is a commercially available EpiDermTM-Kit, procured by MatTek.
The EpiDermTM tissue consists of human-derived epidermal keratinocytes which have
been cultured to form a multi-layered, highly differentiated model of the human epidermis.
It consists of organized basal, spinous and granular layers, and a multi-layered stratum
corneum containing intercellular lamellar lipid layers representing main
lipid classes analogous to those found in vivo. The EpiDermTM tissues are cultured on specially
prepared cell culture inserts. EpiDermTM tissues were procured from MatTek In Vitro Life Science Laboratories, Bratislava.
MTT assay:
3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazoliumbromide (=MTT), which can be reduced
to a blue formazan.
A MTT stock solution of 5 mg/mL in DPBS buffer was prepared and stored in aliquots of
2 mL in the freezer (– 20 ± 5 °C).
2 mL of the stock solution were thawed and diluted with 8 mL of medium. This MTTsolution
with the resulting concentration of 1 mg/mL was used in the test.
For the pre-test (testing the ability of direct formazan reduction), the concentrate was
thawed and diluted with serum-free MEM directly before use.
For the main tests, the concentrate was thawed and diluted with assay medium directly
before use.
The following instruments and devices were used in the performance of the study.
Autoclave, 3870 ELV-B
Stop watches
96-well-plate photometer, Anthos Reader
Precision scales, Sartorius CPA8201
Precision scales, Mettler Toledo PB 5001-S
Analytical scales, Mettler Toledo XS 205 DU
Incubation chamber Binder, adjustable to 37 °C, 5% CO2
Table water bath, neoLab
Glass thermometer
Adjustable pipettes with sterile tips
Clean bench, category 2 (Axo Safe, MARS 12000)
Forceps, sterile
Orbital shakers, GFL 3005
Nylon mesh circles 8 mm diameter (200 μm pore (EPI-MESH))
Pipetting device, Accu Jet
Freezer
Weighing funnels - Control samples:
- yes, concurrent negative control
- yes, concurrent positive control
- yes, concurrent MTT non-specific colour control
- Amount/concentration applied:
- Tissue Amount
1.exp Add test 2. exp 3. exp
1 24.4 mg 26.4 mg 25.7 mg 25.4 mg
2 26.7 mg -- 25.8 mg 25.9 mg
3 26.0 mg -- 25.4 mg 25.9 mg - Duration of treatment / exposure:
- three tissues of the human skin model EpiDermTM were treated with Copper dioleate for 60 min.
The test item was applied directly to each tissue and spread to match the tissue size (0.63 cm2; as indicated by the supplier). - Number of replicates:
- 3
- Irritation / corrosion parameter:
- other:
- Remarks:
- % photometric absorbance
- Run / experiment:
- 3 experiments
- Value:
- 63.2
- Negative controls validity:
- valid
- Remarks:
- In all experiments, the optical density of the negative control was well within the required acceptability criterion of 0.8 ≤ mean OD ≤ 2.8
- Positive controls validity:
- valid
- Remarks:
- The positive control has met the acceptance criterion too, for thus ensuring the validity of the test system
- Remarks on result:
- positive indication of irritation
- Remarks:
- In the first experiment the mean value lead to the classification “non-irritant to skin”, in the second experiment the result was “skin irritant” and in the third experiment the result was again “non-irritant to skin”. Therefore, Copper dioleate cannot be classified with the Human Skin Model Test because of the discrepant results of the three experiments.
- Other effects / acceptance of results:
- All validity criteria were met.
Values for negative control and for positive control were within the range of historical data of the test .
Criterion: OD of negative control
Demanded: ≥ 0.8 and ≤ 2.8
1. Experiment 1.4
2. Experiment 1.9
3. Experiment 1.8
Criterion: % Formazan production of positive control
Demanded: ≥ 20% of negative control
1. Experiment 3.6%
2. Experiment 3.5%
3. Experiment 3.4%
Criterion: SD of mean viability of the tissue replicates(%)
Demanded: ≤ 18%
1. Experiment
3.0% (negative control)
0.5% (positive control)
8.7% (test item)
2. Experiment
4.3% (negative control)
0.2% (positive control)
1.6% (test item)
3. Experiment
7.1% (negative control)
0.2% (positive control)
3.6% (test item) - Interpretation of results:
- Category 2 (irritant) based on GHS criteria
- Conclusions:
- The results were equivocal. They showed test substance to be irritant and non irritant. Invivo study may be neccessery to verify. However considering to avoid undue animal testing a precautionary classification will be applied.
- Executive summary:
Three experiments plus an additional test on colour binding capacity of the test item were
performed. The first experiment was not sufficient for classification, because the three replicates
lead to different classification results, the mean value was above the threshold for
skin irritation. The second experiment showed a discrepant result compared to the first
experiment, the mean value was below the threshold for skin irritation. Therefore a third
experiment was performed. In the third experiment the mean value was again above the
threshold for skin irritation.
After the treatment with the test item, the relative absorbance values were reduced to
54.2 % (1. experiment), 36.4% (2. experiment) and 63.2% (3. experiment).
Therefore in the first experiment the mean value lead to the classification “non-irritant to
skin”, in the second experiment the result was “skin irritant” and in the third experiment the
result was again “non-irritant to skin”.
Therefore, Copper dioleate cannot be classified with the Human Skin Model Test because
of the discrepant results of the three experiments.
In all experiments, the optical density of the negative control was well within the required
acceptability criterion of 0.8 ≤ mean OD ≤ 2.8.
The positive control has met the acceptance criterion too, for thus ensuring the validity of
the test system.
Variation within replicates was within the accepted range for negative control, positive control
and test item (required: ≤ 18%).
Reference
All validity criteria were met.
Values for negative control and for positive control were within the range of historical data
of the test facility .
The first experiment was insufficient for classification of the test item, because the three
replicates lead to a discrepant classification, the mean value would lead to “non-irritant to
skin”. Therefore a second experiment was performed. In the second experiment the test
item showed skin irritation potential. This was a deviating value compared to the first experiment.
Therefore a third experiment was performed. The result was “non-irritant to
skin”.
Due to the equivocal results of the three experiments, no prediction can be made and the
test item cannot be classified for skin irritation with this test method.
Experiment 1 %Formazanproduction
Designation |
Copperdioleate |
PositiveControl |
% Formazanproduction(tissue1) |
62.1% |
3.9% |
% Formazanproduction(tissue2) |
55.7% |
3.1% |
% Formazanproduction(tissue3) |
44.9% |
3.8% |
%Formazan production (mean) |
54.2% |
3.6% |
±SD ofmean Formazan production (%) |
8.7% |
0.5% |
Designation |
Copperdioleate |
PositiveControl |
% Formazanproduction(tissue1) |
37.6% |
3.3% |
% Formazanproduction(tissue2) |
37.0% |
3.6% |
% Formazanproduction(tissue3) |
34.6% |
3.6% |
%Formazan production (mean) |
36.4% |
3.5% |
±SD ofmean Formazan production (%) |
1.6% |
0.2% |
Experiment 2 %Formazanproduction
Designation |
Copperdioleate |
PositiveControl |
% Formazanproduction(tissue1) |
37.6% |
3.3% |
% Formazanproduction(tissue2) |
37.0% |
3.6% |
% Formazanproduction(tissue3) |
34.6% |
3.6% |
%Formazan production (mean) |
36.4% |
3.5% |
±SD ofmean Formazan production (%) |
1.6% |
0.2% |
Experiment 3 %Formazanproduction
Designation |
Copperdioleate |
PositiveControl |
% Formazanproduction(tissue1) |
61.6% |
3.7% |
% Formazanproduction(tissue2) |
60.6% |
3.3% |
% Formazanproduction(tissue3) |
67.3% |
3.3% |
%Formazan production (mean) |
63.2% |
3.4% |
±SD ofmean Formazan production (%) |
3.6% |
0.2% |
Endpoint conclusion
- Endpoint conclusion:
- adverse effect observed (irritating)
Eye irritation
Link to relevant study records
- Endpoint:
- eye irritation: in vitro / ex vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 9-12 May 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study
- Remarks:
- OECD Guideline for the Testing of Chemicals, Part 492, adopted 28. Jul. 2015, “Reconstructed Human Cornea-like Epithelium (RhCE) Test Method for Identifying Chemicals Not Requiring Classification and Labelling for Eye Irritation or Serious Eye Damage”
- 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)
- Version / remarks:
- adopted 28. Jul. 2015
- Deviations:
- yes
- Remarks:
- Normally, an additional pre- test should be performed, because the test item might be possibly interacting with the photometrical measurement. The missing performance of the pre-test can be seen as uncritical, because the main test was positive
- GLP compliance:
- yes (incl. QA statement)
- Specific details on test material used for the study:
- Name: Copper dioleate
Batch no.: 21092015
Appearance: Green, solid/paste
Composition: Cu-dioleate
Purity: > 99 %, IR
Homogeneity: homogeneous
Expiry date: 21. Sep. 2018
Storage: Room Temperature (20 ± 5°C) - Species:
- human
- Strain:
- other: human-derived keratinocytes which have been cultured to form a stratified squamous epithelium similar to that found in the human cornea. It consists of highly organized basal cells.
- Details on test animals or tissues and environmental conditions:
- 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 cornea.
It consists of highly organized basal cells. These cells are not transformed or transfected
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. - Vehicle:
- unchanged (no vehicle)
- Controls:
- yes, concurrent positive control
- yes, concurrent negative control
- Amount / concentration applied:
- Tissue 1: 52.2 mg
Tissue 2: 49.1 mg - Duration of treatment / exposure:
- 6h
- Duration of post- treatment incubation (in vitro):
- For post-treatment incubation, the tissues were incubated for 18 h + 9 min at 37 ± 1 °C, 5 ± 1 % CO2 and 80 – 100 % relative humidity.
- Number of animals or in vitro replicates:
- 2 (tissue 1&2)
- Details on study design:
- Pre-Tests
Assessment of Direct Reduction of MTT by the Test Item
The test item Copper dioleate was tested for the ability of direct formazan reduction. To
test for this ability, 51.7 mg of the solid test item were added to 1 mL of MTT reagent in a
6-well plate and the mixture was incubated in the dark at 37 ± 1 °C, 5 ± 1 % CO2 and 80 –
100 % relative humidity for 3 h. 1 mL of MTT reagent plus 50 μL of H2O demin. was used
as negative control.
The MTT reagent did not change its colour; therefore, direct MTT reduction had not taken
place, and no data correction was necessary.
Assessment of Coloured or Staining Test Items
51.0 mg of the test item were added to 2 mL isopropanol, incubated in 6-well plates on an orbital shaker for 2 h and 23 min at room temperature. Then, two 200 μL aliquots of the resulting solution and two 200 μL aliquots of neat isopropanol were centrifuged (1750 rpm,
30 sec) and then transferred into a 96-well plate and measured with a plate reader at 570 nm.
After subtraction of OD for isopropanol, the OD of the test item solution was 0.4995 (> 0.08). Normally, an additional test should be performed, because the test item might be possibly interacting with the photometrical measurement. But as the result of the main test was positive (“eye irritating”), a possible false negative result could be excluded and no additional test was necessary.
Main Test
Preparations
On the day of the start of the experiment, the MTT concentrate was thawed. The concentrate was diluted with the MTT solvent and the solution was used directly. The assay medium was warmed in the water bath to 37 ± 1°C. 6-well-plates were labelled with test item, resp. negative control, resp. positive control and filled with 1 mL assay medium in the appropriate wells. All 24 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
80 – 100 % relative humidity for 1 h. 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 80 – 100 % relative humidity for 16 h and 30 min.
Exposition and Post-Treatment
After overnight incubation, the tissues were pre-wetted with 20 μL DPBS buffer and the tissues were incubated at 37 ± 1 °C, 5 ± 1 % CO2 and 80 – 100 % relative humidity for 30 min. After that, 50 μL of the controls and a defined amount of test item were applied in duplicate. 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 6 h at 37 ± 1 °C, 5 ± 1 % CO2 and 80 – 100 % relative humidity. At the end of exposure time, the inserts were removed from the plates in 1-min-intervals using sterile forceps and rinsed immediately. The inserts were thoroughly rinsed with DPBS. Then, the tissues were immediately transferred into 5 mL of assay medium in prelabelled 12-well plate for 25 min post soak at room temperature. After that, each insert was blotted on absorbent material and transferred into a pre-labelled 6-well plate, containing 1 mL assay medium. For post-treatment incubation, the tissues were incubated for 18 h + 9 min at 37 ± 1 °C, 5 ± 1 % CO2 and 80 – 100 % 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-reagent in each well. The tissue inserts were blotted on absorbent material and then transferred into the MTT solution. The plate was incubated for 180 min at 37 ± 1 °C, 5 ± 1 % CO2 and 80 – 100 % relative 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 is flowing into the tissue insert. The plate was firmly sealed to avoid evaporation of the solvent and then shaken for 2 h at room temperature.
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-wellplate. Eight wells with 200 μL isopropanol were pipetted as blank. The plate was read in a plate spectrophotometer at 570 nm. - Irritation parameter:
- other:
- Remarks:
- % Viability (Tissue ) based of optical density of the MTT solution compared to control
- Value:
- 32.3
- Negative controls validity:
- valid
- Positive controls validity:
- valid
- Remarks on result:
- positive indication of irritation
- Other effects / acceptance of results:
- Eye irritation is assessed using the criteria given in the following table (source: MatTek Corporation):
Assessment of Eye Irritation
% Viability: > 60 %
Assessment: Non eye irritant
GHS category: No GHS category
% Viability: ≤ 60 %
Assessment: Eye irritant
GHS category: GHS category 1 or 2
Validity
Criterion: OD of negative control
Demanded ≥ 0.8 and ≤ 2.5
Result: 1.9
Criterion: % Formazan production of positive control
Demanded: < 50% of negative control
Result: 36.4%
Criterion: Variation within replicates
Demanded: ≤ 20%
Results:
1.0% (negative control)
1.1% (positive control)
2.2% (test item)
The value for the positive control was within the range of historical data of the test facility (see annex 2, page 19). The value of the negative control was marginally outside the range of the historical data (see annex 2, page 19). This can be seen as uncritical, because the value was only marginally above the historical range and moreover the value was still within the accepted range of the validity criterion.
Therefore, the experiment is considered valid.
10 DISCUSSION
Under the conditions of the test system, Copper dioleate is considered as eye irritant in the EpiOcularTM Eye Irritation Test.
After treatment with the test item, the relative absorbance values were reduced to 32.3 %.
This value is below 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 1.9 (> 0.8 and < 2.5).
The positive control induced a decrease in the relative absorbance as compared to the negative control to 36.4%. Therefore, the validity criterion that this value should be re-duced to < 50% was met.
Variation within the replicates of negative control, positive control and test item was within the accepted range (< 20 %).
For these reasons, the result of the test is considered as valid. - Interpretation of results:
- Category 2 (irritating to eyes) based on GHS criteria
- Conclusions:
- Under the conditions of the test system, Copper dioleate is considered as eye irritant in the EpiOcularTM Eye Irritation Test.
After treatment with the test item, the relative absorbance values were reduced to 32.3 %.
This value is below 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 1.9 (> 0.8 and < 2.5).
The positive control induced a decrease in the relative absorbance as compared to the negative control to 36.4%. Therefore, the validity criterion that this value should be reduced to < 50% was met. Variation within the replicates of negative control, positive control and test item was within the accepted range (< 20 %).
For these reasons, the result of the test is considered as valid. - Executive summary:
One valid experiment was performed.
The test item Copper dioleate was applied to a three-dimensional human cornea tissue model in duplicate for an exposure time of 6 h. After treatment, the respective substance was rinsed from the tissue; then, cell viability of the tissues was evaluated by addition of MTT, which can be reduced to formazan. The formazan production was evaluated by measuring the optical density (OD) of the resulting solution. Demineralised water was used as negative control, Methyl acetate was used as positive control.
The controls showed the following results: After treatment with the negative control, the absorbance values were within the required acceptability criterion of 0.8 ≤ mean OD ≤ 2.5, OD was 1.9. The positive control showed clear eye irritating effects, the relative absorbance value was reduced to 36.4 % (< 50%). Variation within tissue replicates of negative control, positive control and test item was within the accepted range (≤ 20%). After treatment with the test item, the relative absorbance values were reduced to 32.3%. This value is below the threshold for eye irritation potential (≤ 60%).
Under the conditions of the test system, Copper dioleate is considered as eye irritant in the EpiOcularTM Eye Irritation Test.
Reference
Endpoint conclusion
- Endpoint conclusion:
- adverse effect observed (irritating)
Respiratory irritation
Endpoint conclusion
- Endpoint conclusion:
- no study available
Additional information
Determination of Skin Irritation Potential of Copper dioleate in the Human Skin Model Test following EUMethod B.46 resp. OECD 439
After the treatment with the test item, the relative absorbance values were reduced to 54.2 % (1. experiment), 36.4% (2. Experiment) and 63.2% (3. experiment). Therefore in the first experiment the mean value lead to the classification “non-irritant to skin”, in the second experiment the result was “skin irritant” and in the third experiment the result was again “non-irritant to skin”.
Determination of Eye Irritation Potential of Copper dioleate using the EpiOcularTM Human Cornea Model following Protocol EpiOcularTM Eye Irritation Test
Variation within tissue replicates of negative control, positive control and test item was within the accepted range (≤ 20%). After treatment with the test item, the relative absorbance values were reduced to 32.3%. This value is below the threshold for eye irritation potential (≤ 60%). Under the conditions of the test system, Copper dioleate is considered as eye irritant in the EpiOcularTM Eye Irritation Test.
Justification for classification or non-classification
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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