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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: - | 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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Skin irritation / corrosion
Administrative data
- Endpoint:
- skin corrosion: in vitro / ex vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2019-11-12 to 2019-12-25
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
- Report date:
- 2019
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 431 (In Vitro Skin Corrosion: Reconstructed Human Epidermis (RHE) Test Method)
- Version / remarks:
- June 18, 2019
- GLP compliance:
- yes
Test material
- Reference substance name:
- 2-Propenoic acid, 2-methyl-, 3-methyl-3-buten-1-yl ester
- Cas Number:
- 156291-88-2
- Molecular formula:
- C9H14O2
- IUPAC Name:
- 2-Propenoic acid, 2-methyl-, 3-methyl-3-buten-1-yl ester
- Reference substance name:
- Mequinol
- EC Number:
- 205-769-8
- EC Name:
- Mequinol
- Cas Number:
- 150-76-5
- IUPAC Name:
- (Polymerization inhibitor) 4-Methoxyphenol
Constituent 1
additive 1
In vitro test system
- Test system:
- human skin model
- Cell type:
- non-transformed keratinocytes
- Cell source:
- other: donor - All cells used to produce EpiDermTM are purchased or derived from tissue obtained by MatTek Corporation from accredited lnstitutions, ln all cases, consent was obtained by these Institutions from the donor or the donor's legal next of kin, for use
- Justification for test system used:
- EpiDerm SCT kit is recommended in the test method
- Vehicle:
- unchanged (no vehicle)
- Details on test system:
- RECONSTRUCTED HUMAN EPIDERMIS (RHE) TISSUE
- Model used: EpiDerm SCT kit
- Tissue batch number: 32116
- Production date: 2019-11-07
- Delivery date: 2019-11-11
- Date of initiation of testing: 2019-11-12
TEMPERATURE USED FOR TEST SYSTEM
- Temperature used during treatment / exposure: 3-minutes exposure at room temperature; at 60-minute exposure each plate was placed into the inbubator
- Temperature of post-treatment incubation (if applicable): room temperature
REMOVAL OF TEST MATERIAL AND CONTROLS
-Volume and number of washing steps: After the exposure, each tissue twenty times with PBS(-).
Inside and outside the tissue inserts were wiped with a sterile cotton swab. The tissue inserts were placed into a 24-well plate (Corning) filled with 300 µL/well of fresh medium
MTT DYE USED TO MEASURE TISSUE VIABILITY AFTER TREATMENT / EXPOSURE
PRE-TEST
- MTT concentration: 1mg/ml MTT solution (MTT medium)
- 50 µl test substance + 1 ml MTT medium
- Incubation time: 60 minutes
NYLON MESH
- 50µl of test substance was dropped onto a nylon mesh on a glass slide. After 60 minutes at room
temp., the corrosion of the nylon mesh was evaluated microscopically. Corrosion was not observed.
MAIN TEST
- MTT concentration: 1mg/ml MTT solution (MTT medium); 0.9 mL/well
- 50µl test substance or 50 µl control substance
- Pre-incubation time: 60 +- 5 minutes (0.9 mL/well of the medium)
- Incubation time (after rinsing) : 180+- 5 minutes (with 300 µL/well of MTT medium); extraction at room temperature for 2 hours or more using a plate shaker
- Spectrophotometer: Multimode Microplate Reader (FlUOstar Omega, BMG LABTECH) at 570 nm
FUNCTIONAL MODEL CONDITIONS WITH REFERENCE TO HISTORICAL DATA - OD:
3 min exposure:
Negative control: 2.004 ± 0.166
Positive control: 0.157 ± 0.049
60 min exposure:
Negative control: 1.951 ± 0.152
Positive control: 0.053 ± 0.020
NUMBER OF REPLICATE TISSUES: 2 (Duplicate tissue inserts were used for the test substance, negative control substance and positive control substance. Duplicate tissue inserts were used to check the tissue-binding of the test substance
NUMBER OF INDEPENDENT TEST SEQUENCES / EXPERIMENTS TO DERIVE FINAL PREDICTION: 1
PREDICTION MODEL / DECISION CRITERIA
Mean cell viability Category
<25% (3-minute exposure) Corrosive ( UN GHS Cat. 1A)
>=25%, <50% (3-minute exposure) Corrosive ( UN GHS Cat. 1B and 1C)
>=50% (3-minutes exposure) and <15% (60-minutes exposure) Corrosive ( UN GHS Cat. 1B and 1C)
>=50% (3-minutes exposure) and >=15% (60-minutes exposure) Non-Corrosive (UN GHS Cat. 2 or not classified) - Control samples:
- yes, concurrent negative control
- yes, concurrent positive control
- Amount/concentration applied:
- TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 50µl
NEGATIVE CONTROL
- Amount(s) applied (volume or weight): 50µl
POSITIVE CONTROL
- Amount(s) applied (volume or weight): 50µl
- Concentration (if solution): 8N KOH - Duration of treatment / exposure:
- 3 minutes
60 minutes - Duration of post-treatment incubation (if applicable):
- 180 minutes
- Number of replicates:
- 2 tissue insert per treatment group
Results and discussion
In vitro
Resultsopen allclose all
- Irritation / corrosion parameter:
- % tissue viability
- Run / experiment:
- 3 minutes
- Value:
- 97.4
- Negative controls validity:
- valid
- Positive controls validity:
- valid
- Irritation / corrosion parameter:
- % tissue viability
- Run / experiment:
- 60-minutes
- Value:
- 75.6
- Negative controls validity:
- valid
- Positive controls validity:
- valid
- Other effects / acceptance of results:
- ACCEPTANCE OF RESULTS:
- Acceptance criteria met for negative control: Yes: The ODs in the negative control substance group in the 3-minute and 60-minute exposures were 1.848 and 1.689, respectively.
- Acceptance criteria met for positive control: Yes: The mean cell viability in the positive control substance group in the 60-minute exposure was 2.8%.
- Acceptance criteria met for variability between replicate measurements: The CVs between the two tissue inserts were = 30% for all substances which the cell viability was from 20% to 100%.
Applicant's summary and conclusion
- Interpretation of results:
- Category 2 (irritant) based on GHS criteria
- Conclusions:
- It is concluded that IPEMA was "non-corrosive" (UN GHS category 2 or not classified) under the present test conditions
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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