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EC number: 947-930-1 | 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
Skin sensitisation
Administrative data
- Endpoint:
- skin sensitisation: in chemico
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 12/9/2017 to 30/11/2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: OECD Guideline 442E (human Cell Line Activation Test (h-CLAT)
- Version / remarks:
- Adopted 29 July 2016.
- GLP compliance:
- yes
- Type of study:
- activation of dendritic cells
Test material
- Reference substance name:
- Tris(2-ethylhexyl) 2-hydroxypropane-1,2,3-tricarboxylate
- EC Number:
- 230-457-3
- EC Name:
- Tris(2-ethylhexyl) 2-hydroxypropane-1,2,3-tricarboxylate
- Cas Number:
- 7147-34-4
- Molecular formula:
- C30H56O7
- Test material form:
- liquid
Constituent 1
- Specific details on test material used for the study:
- The test article, a clear liquid, was identified as Bernel Ester TCC and was received at Covance on 30 June 2017 as follows:
Test Article: Bernel Ester TCC
CAS Number: 16502-99-1
Storage: "15 to 25°C protected from light
Batch Number ESTS185/17, P7803
Retest Date 23-Jan-19
Purity 94%
A certificate of analysis for the test article was provided by the Sponsor. The solvent control was DMSO (at a concentration of 0.4% in culture medium). DMSO was supplied by Sigma Aldrich, Gillingham.
In chemico test system
- Details on the study design:
- Assay Acceptance Criteria
• The cell viabilities of medium and solvent control should be higher than 90%.
• In the solvent control, RFI values of both CD86 and CD54 should not exceed the positive criteria (CD86 RFI ≥150% and CD54 RFI ≥200%).
• For both medium and solvent controls, the MFI ratio of both CD86 and CD54 to isotype control should be >105%.
• In the positive control (DNCB), RFI values of both CD86 and CD54 should meet the positive criteria (CD86 RFI ≥150% and CD54 RFI ≥200%) and cell viability should be more than 50%.
• For the test article, the cell viability should be more than 50% in at least four tested doses in each run.
Negative Results
Negative results are acceptable only for test articles exhibiting a cell viability of less than 90% at 1.2 x CV75 (highest concentration). If the cell viability at 1.2 x CV75 is equal to or greater than 90% the negative results should be discarded and the dose selection should be refined by repeating the CV75 determination.
When the highest soluble concentration is used as the maximal test concentration of the test article, a negative result is acceptable even if the cell viability is above 90%.
Results and discussion
In vitro / in chemico
Resultsopen allclose all
- Run / experiment:
- other: Expression levels of CD86 and cell viability were analysed using flow cytometry. Cell viability >= 50 %
- Parameter:
- other: Relative Fluorescence Intensity - RFI (%)
- Value:
- 200
- Vehicle controls validity:
- valid
- Negative controls validity:
- not specified
- Positive controls validity:
- not specified
- Remarks on result:
- no indication of skin sensitisation
- Run / experiment:
- other: Expression levels of CD54 and cell viability were analysed using flow cytometry. Cellviability >= 50 %
- Parameter:
- other: Relative Fluorescence Intensity - RFI (%)
- Value:
- 200
- Vehicle controls validity:
- valid
- Negative controls validity:
- not specified
- Positive controls validity:
- not specified
- Remarks on result:
- no indication of skin sensitisation
Any other information on results incl. tables
RESULTS
Dose Finding Assay
The cell viability results are given in the table below:
Viability (%) at Concentration (µg/mL) | ||||||||
Run | 0.781 | 1.562 | 3.125 | 6.25 | 12.5 | 25 | 50 | 100 |
1 | 99.1 | 98.6 | 98.8 | 99.0 | 98.9 | 99.0 | 99.3 | 99.0 |
2 | 99.1 | 98.8 | 99.2 | 99.3 | 99.0 | 99.2 | 99.0 | 98.8 |
No effect on viability was noted, therefore no CV75 value could be calculated.
CD86/CD54 Expression Results
Geometric mean fluorescence intensity (MFI) and viability results are given in the table below:
Experiment 1
MFI (Geo Mean) | Corrected MFI | Viability | |||||
Concentration (ug/mL) | CD86 | CD54 | Isotype | CD86 | CD54 | CD86 | CD54 |
27.9 | 1108 | 736 | 596 | 512 | 140 | 97.5 | 97.9 |
33.48 | 976 | 714 | 596 | 380 | 118 | 98.7 | 98.6 |
40.18 | 969 | 705 | 573 | 396 | 132 | 98.6 | 98.9 |
48.22 | 948 | 720 | 583 | 365 | 137 | 98.7 | 98.8 |
57.87 | 947 | 742 | 588 | 359 | 154 | 98.7 | 98.8 |
69.44 | 951 | 730 | 587 | 364 | 143 | 98.6 | 98.8 |
83.33 | 911 | 713 | 582 | 329 | 131 | 98.5 | 98.5 |
100 | 937 | 725 | 572 | 365 | 153 | 98.5 | 98.6 |
Solvent | 1063 | 719 | 595 | 468 | 124 | 98.5 | 98.9 |
Positive control | 2182 | 1141 | 717 | 1465 | 424 | 89.7 | 90.7 |
Experiment 2
MFI (Geo Mean) | Corrected MFI | Viability | |||||
Concentration (ug/mL) | CD86 | CD54 | Isotype | CD86 | CD54 | CD86 | CD54 |
27.9 | 1301 | 663 | 538 | 763 | 125 | 98.3 | 98.3 |
33.48 | 1276 | 661 | 536 | 740 | 125 | 98.4 | 98.8 |
40.18 | 1267 | 641 | 528 | 739 | 113 | 98.3 | 98.6 |
48.22 | 1322 | 658 | 539 | 783 | 119 | 98.3 | 98.3 |
57.87 | 1385 | 653 | 552 | 833 | 101 | 97.8 | 97.9 |
69.44 | 1336 | 662 | 557 | 779 | 105 | 98.4 | 98.7 |
83.33 | 1293 | 656 | 551 | 742 | 105 | 98.5 | 98.5 |
100 | 1392 | 672 | 550 | 842 | 122 | 98.3 | 98.8 |
Solvent | 1282 | 675 | 571 | 711 | 104 | 98.7 | 99 |
Positive control | 3097 | 2276 | 747 | 2350 | 1529 | 82.5 | 82.2 |
The relative fluorescence intensity (RFI) values for the test article were calculated as follows:
Concentration (ug/mL) | RFI (CD86) | RFI (CD54) | ||
Exp | Exp 1 | Exp 2 | Exp 1 | Exp 2 |
27.9 | 109 | 107 | 113 | 120 |
33.48 | 81 | 104 | 95 | 120 |
40.18 | 85 | 104 | 106 | 109 |
48.22 | 78 | 110 | 110 | 114 |
57.87 | 77 | 117 | 124 | 97 |
69.44 | 78 | 110 | 115 | 101 |
83.33 | 70 | 104 | 106 | 101 |
100 | 78 | 118 | 123 | 117 |
Applicant's summary and conclusion
- Interpretation of results:
- other: The test article, Bernel Ester TCC, was considered to be negative in the human Cell Line Activation Test.
- Conclusions:
- CONCLUSION
The RFI of CD86 was <150% at all tested concentrations (with cell viability ≥50%) and the RFI of CD54 was <200% at all tested concentrations (with cell viability ≥50%) in both independent runs.
The test article, Bernel Ester TCC, was therefore considered to be negative in the human Cell Line Activation Test. - Executive summary:
The study was conducted to investigate the potential of Bernel Ester TCC to activate monocytes and dendritic cells in the human monocytic leukemia cell line THP-1, by quantifying changes in the expression of cell surface markers (CD86 and CD54). The data may be used as part of an integrated approach to testing and assessment (IATA) to support the discrimination between skin sensitisers and non-sensitisers for the purpose of hazard classification and labelling.
The test article was dissolved in anhydrous analytical grade dimethyl sulphoxide (DMSO) and a dose finding assay was conducted to determine a concentration showing 75% THP-1 cell survival (CV75).
Eight stock solutions were prepared by 1.2-fold serial dilutions using DMSO to give eight doses ranging from 0.335 x CV75 to 1.2 x CV75. These stock solutions were then diluted 250-fold (for DMSO) into the culture medium (working solutions).
Aliquots of 500 µL of each of the working solutions were mixed 1:1 with cell suspensions at 1 x 106 cells per well. Each plate was sealed using a plate sealer and then incubated at 37±1°C, 5% (v/v) CO2 in air, in a humidified environment for 24±0.5 hours.
After the 24-hour incubation period, the cells were transferred into sample tubes, collected by centrifugation, washed with FACS buffer and then blocked with 600 µL of blocking solution (FACS buffer containing 0.01% (w/v) globulin) at 4°C for 15 minutes.
After blocking, the cells were split into three aliquots of 180 µL into a 96-well plate (or sample tubes), centrifuged and then stained with FITC-labelled anti-CD86, anti- CD54 or mouse IgG1 antibodies at 4°C for 30 minutes.
The stained cells were washed with FACS buffer and re-suspended in FACS buffer and propidium iodide solution was added. The expression levels of CD86 and CD54 and cell viability were analysed using flow cytometry.
No effect on viability was noted during the dose finding assay, therefore no CV75 value could be calculated.
The RFI of CD86 was <150% at all tested concentrations (with cell viability ≥50%) and the RFI of CD54 was <200% at all tested concentrations (with cell viability ≥50%) in both independent runs.
The test article, Bernel Ester TCC, was therefore considered to be negative in the human Cell Line Activation Test.
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