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EC number: 203-431-4 | CAS number: 106-79-6
- 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
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:
- 23 October 2012 to 08 April 2013
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Fully GLP compliant and in accordance with current test guidelines
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.46 (In Vitro Skin Irritation: Reconstructed Human Epidermis Model Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 439 (In Vitro Skin Irritation: Reconstructed Human Epidermis Test Method)
- Deviations:
- no
- Principles of method if other than guideline:
- Not applicable
- GLP compliance:
- yes
- Test system:
- human skin model
- Source species:
- human
- Cell type:
- other: human derived epidermal keratinocyte
- Cell source:
- other:
- Vehicle:
- unchanged (no vehicle)
- Amount/concentration applied:
- 30µl
- Duration of treatment / exposure:
- 60 min
- Species:
- other: Not applicable
- Strain:
- other: Not applicable
- Details on test animals or test system and environmental conditions:
- A three-dimensional human skin model, comprising a reconstructed epidermis with a functional stratum corneum was supplied by MatTek Corporation, Ashland, Massachusetts, USA. Human keratinocytes are used to construct the epithelium. Multiple layers of viable epithelial cells are present under a functional stratum corneum. The stratum corneum is multi-layered with the necessary lipid profile to produce a functional barrier. The containment properties of the model prevent the passage of material around the stratum corneum to the viable model tissue. The skin model is manufactured to defined quality assurance procedures (certified ISO 9001) and supplied free of contamination with bacteria, mycoplasma and fungi.
- Type of coverage:
- not specified
- Preparation of test site:
- not specified
- Vehicle:
- unchanged (no vehicle)
- Controls:
- no
- Amount / concentration applied:
- TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 30 µL of test system
- Concentration (if solution): Not applicable
VEHICLE
- Amount(s) applied (volume or weight with unit): 30 µL of positive and negative control
- Concentration (if solution): Not applicable
- Lot/batch no. (if required): Not applicalbe
- Purity: The positive control substance was 5% w/v aqueous Sodium Dodecyl Sulphate (SDS) in PBS. - Duration of treatment / exposure:
- 35 minutes at 37°C and 5% carbon dioxide. The plates were then removed from the incubator and placed into a sterile hood until the 60 minute treatment period was complete for each tissue. Following treatment, substances were removed by washing the tissues. The tissues were then placed on the appropriate medium and incubated for 42 hours. The protocol stated that the incubation period would be 24 hours. This deviation from protocol was considered not to have affected the integrity or outcome of the study as this was an error in the protocol and the correct incubation period was used for this test system
- Observation period:
- Not applicable
- Number of animals:
- Not applicable
- Details on study design:
- At the end of the 42-hour incubation period, tissue viability was assessed by MTT assay. Following rinsing, tissues were placed on 0.3 mL of MTT solution (1 mg/mL) and incubated for 3 hours. Once complete, the tissues were removed from the MTT solution and any resultant colour formed in the tissues by the MTT assay was extracted.
Extraction was achieved by flooding the tissue with 2 mL isopropanol, sealing the plate to avoid any evaporation occurring and then shaking at 150 rpm for 2 hours.
Upon completion of the extraction, each tissue was pierced using a hypodermic needle so that so that the extract could run through the tissue. Once drained, the tissue was discarded and the extract mixed by shaking at 150 rpm for 15 minutes. Two 200 µL aliquots of each resultant extract was placed into a 96-well plate for spectrophotometric determination of optical density at 570 nm using extraction solution as a blank.
Tissue viability was calculated for each tissue as a percentage of mean of the negative control tissues. - Irritation / corrosion parameter:
- % tissue viability
- Value:
- 90.4
- Vehicle controls validity:
- valid
- Negative controls validity:
- valid
- Positive controls validity:
- valid
- Remarks on result:
- no indication of irritation
- Interpretation of results:
- not irritating
- Remarks:
- Migrated information Criteria used for interpretation of results: not specified
- Conclusions:
- The test article, Dimethyl Sebacate, was considered not to be irritant to the in vitro skin model EpiDerm SIT (EPI-200).
- Executive summary:
This study was conducted to determine whether the test article, Dimethyl Sebacate, causes dermal irritation in the in vitro skin model EpiDermTM SIT (EPI-200).
EpiDermTM SIT (EPI-200) inserts were treated with test article, negative control (phosphate buffered saline (PBS)) and positive control (5% w/v sodium dodecyl sulphate (SDS)) for 60 minutes. At the end of the treatment period, the tissues were washed with PBS and cell viability was assessed using the MTT assay. The skin irritation potential was classified according to the remaining cell viability obtained after test article treatment.
The group mean viability for the test article was 90.4%, for the negative control was 100% and for the positive control was 5.1%.
The test article, Dimethyl Sebacate, was considered not to be irritant to the in vitro skin model EpiDermTM SIT (EPI-200).
Reference
Table1 Cell viability measurements
Substance |
Tissue replicate |
OD570 |
Mean |
Corrected mean |
Relative survival |
||||
Aliquot 1 |
Aliquot 2 |
% |
Mean |
SD |
CV |
||||
Negative control |
A |
1.272 |
1.324 |
1.298 |
1.298 |
90.4 |
100.0 |
14.732 |
14.732 |
B |
1.679 |
1.678 |
1.679 |
1.679 |
117.0 |
||||
C |
1.164 |
1.494 |
1.329 |
1.329 |
92.6 |
||||
Test article |
A |
1.161 |
1.427 |
1.294 |
1.294 |
90.1 |
90.4 |
26.198 |
28.969 |
B |
0.817 |
1.031 |
0.924 |
0.924 |
64.4 |
||||
C |
1.629 |
1.723 |
1.676 |
1.676 |
116.8 |
||||
Positive control |
A |
0.077 |
0.096 |
0.087 |
0.087 |
6.1 |
5.1 |
1.023 |
20.119 |
B |
0.084 |
0.065 |
0.075 |
0.075 |
5.2 |
||||
C |
0.055 |
0.060 |
0.058 |
0.058 |
4.0 |
||||
Blank |
0.000 |
0.000 |
|
The data in these tables was computer generated. In this system individual and derived figures are rounded. Thereby recalculation of derived values from the individual data will, in some instances, yield minor variations.
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (not irritating)
Additional information
1/In vivo skin irritation study :
There is an in vitro skin irritation study performed according to OECD 439 guideline.
This study was conducted to determine whether the test article, Dimethyl Sebacate, causes dermal irritation in the in vitroskin model EpiDermTMSIT (EPI-200).
EpiDermTMSIT (EPI-200) inserts were treated with test article, negative control (phosphate buffered saline (PBS)) and positive control (5% w/v sodium dodecyl sulphate (SDS)) for 60 minutes. At the end of the treatment period, the tissues were washed with PBS and cell viability was assessed using the MTT assay. The skin irritation potential was classified according to the remaining cell viability obtained after test article treatment.
The group mean viability for the test article was 90.4%, for the negative control was 100% and for the positive control was 5.1%.
As the mean viability was above the cut-off value of 35% whatever the exposure duration, the test item was considered to be non corrosive to the skin.
The test article, Dimethyl Sebacate, was considered not to be irritant to the in vitro skin model EpiDermTMSIT (EPI-200).
2/In vitro eye irritation study:
A bovine corneal opacity and permeability (BCOP) assay was conducted. Three corneas were treated by application of 750 µL of the undiluted test article onto the anterior surface of the cornea followed by a 10 minute incubation at 32°C ± 1°C. A volume of 750 µL of the negative or positive control was similarly applied to further groups of three corneas.
The corneas were then washed and the anterior chamber filled with pre-warmed EMEM (without phenol red). The corneas were then incubated for an additional 2 hours at 32°C ± 1°C. At the end of the post-incubation period the corneas were assessed for opacity. Permeability was determined by the amount of sodium fluorescein dye that penetrated all corneal layers. The media in the anterior chamber was replaced with 4 mg/mL sodium fluorescein, while the posterior chamber was filled with fresh EMEM. The corneas were then incubated for 90 minutes ± 5 minutes at 32 ± 1°C after which the media in the posterior chamber was assessed for presence of sodium fluorescein by measuring the optical density at 490 nanometers using a spectrophotometer.
The mean opacity reading for the test article was -0.7 and the mean group corrected optical density for the test article was -0.158. The test article produced an IVIS score of -3.04 and was considered not to be corrosive or severely irritating to the eye. The in vivo test was therefore conducted.
3/In vivo eye irritation study
An in vivo eye irritation study with Dimethylsebacate was therefore performed according to OECD guideline 405 and GLP . In this study two animals had corneal opacity with a reversibility for only one animal at day 6 and the corneal opacity was also observed for the second animal until day 22. As corneal opacity was observed in 2 out of 3 tested animal and has not fully reversed within an observation period of day 22, the test item was considered to be eye irritant caterogy 1.
Justification for selection of skin irritation / corrosion endpoint:
The study was perfomed according to OECD 439 and is GLP compliant.
Justification for classification or non-classification
Skin irritation: The results of the in vitro skin irritation test performed according to OECD guideline 439 did not trigger classification for Dimethylsebacate according to GHS criteria.
Eye irritation: The results of the in vivo eye irritation study performed according to OECD guideline 405 showed corneal opacity in 2 out 3 animals with absence of reversibility after 22 of observation in one of these animals, therefore, classification as eye irritant category 1 is warranted according to GHS criteria.
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