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Diss Factsheets
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EC number: 252-021-1 | CAS number: 34432-92-3
- 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:
- 12.09. – 13. 09. 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 012
- Report date:
- 2012
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU method B.47 (Bovine corneal opacity and permeability test method for identifying ocular corrosives and severe irritants)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 437 (Bovine Corneal Opacity and Permeability Test Method for Identifying Ocular Corrosives and Severe Irritants)
- Deviations:
- no
- GLP compliance:
- yes
Test material
- Reference substance name:
- N-ethyl-N-[2-[1-(2-methylpropoxy)ethoxy]ethyl]-4-(phenylazo)aniline
- EC Number:
- 252-021-1
- EC Name:
- N-ethyl-N-[2-[1-(2-methylpropoxy)ethoxy]ethyl]-4-(phenylazo)aniline
- Cas Number:
- 34432-92-3
- Molecular formula:
- C22H31N3O2
- IUPAC Name:
- N-ethyl-N-[2-(1-isobutoxyethoxy)ethyl]-4-(phenyldiazenyl)aniline
- Test material form:
- liquid: viscous
- Details on test material:
- Name of test material (as cited in study report): Solvent Yellow 124
Substance type: organic
Physical state: liquid
Appearance: dark yellow viscous liquid
Composition of test material, percentage of components:
- Analytical purity: 90.0 % (w/w)
- Impurities (identity and concentrations):
4´-[2-((hydroxy)ethyl)ethylamino]azobenzene 3.0 % (w/w)
1,1-bis(N-ethyl[4-(phenylazo)phenyl]aminoethan-2-oxy)ethan 2.5 % (w/w)
- Unknown impurities 4.5 % (w/w)
Lot/batch No.: S2408
Expiration date of the lot/batch: Unlisted
Stability under test conditions: stable
Storage condition of test material: During the study the test substance was stored in glass bottle at laboratory temperature.
Constituent 1
Test system
- Vehicle:
- unchanged (no vehicle)
- Amount / concentration applied:
- Open-chamber method was used, because the test substance was viscous liquid. The test substance (enough test substance to completely cover the cornea) was applied directly to the epithelial surface of the cornea using the micropipette. After dosing, the glass window was replaced on the anterior chamber to recreate a closed system.
- Duration of treatment / exposure:
- 10 mins
- Details on study design:
- REMOVAL OF TEST SUBSTANCE
- Washing (if done):
The test substance, was removed from the anterior chamber with olive oil (the removal of test substance with water is not possible) and subsequently with EMEM (containing phenol red - the effectiveness of rinsing acidic or alkaline materials). The corneas were given a final rinse with EMEM (without phenol red). The EMEM (without phenol red) was used as a final rinse to ensure removal of the phenol red from the anterior chamber prior to the opacity measurement. The anterior chamber was then refilled with fresh EMEM without phenol red.
- Time after start of exposure:
Procedure scheme:
Selection of corneas, mounting in holders → incubation with EMEM 1hour (32 ± 1°C) → removed EMEM, measurement of baseline opacity → treatment by positive and negative control substance and test substance (incubation 10 min.) → washing epithelium, incubation 2 hour (32 ± 1°C), measurement of opacity after application → application of sodium fluorescein (4 mg/ml), incubation 1.5 hour (32 ± 1°C) → measurement of optical density (490 nm).
TOOL USED TO ASSESS SCORE: fluorescein
SCORING SYSTEM:
Opacity: Opacity values of treated corneas were corrected by subtracting individual background opacity values.
Permeability: Mean OD value of treated corneas was corrected by subtracting the mean OD value of negative control.
IVIS calculation: Resulting mean opacity and OD490 values for each treatment group was combined in an empirically-derived formula to calculate an in vitro irritancy score (IVIS) for each treatment group as follows:
IVIS = mean opacity value + (15 x mean permeability OD490 value)
Decision criteria:
A substance that induces an IVIS ≥ 55.1 is defined as a corrosive or severe irritant.
Results and discussion
In vitro
Results
- Irritation parameter:
- in vitro irritation score
- Value:
- >= 1.9
- Vehicle controls validity:
- valid
- Negative controls validity:
- valid
- Positive controls validity:
- valid
- Remarks on result:
- no indication of irritation
Any other information on results incl. tables
The In Vitro Irritancy Score (IVIS) was computed according the following formula:
IVIS = mean opacity value + (15 x mean permeability OD490 value)
For calculation of IVIS value was used olive oil as negative control because the test substance was removed with olive oil.
Applicant's summary and conclusion
- Interpretation of results:
- not irritating
- Remarks:
- Migrated information Criteria used for interpretation of results: EU
- Conclusions:
- The In Vitro Irritancy Score (IVIS) for Solvent Yellow 124 was 1.90. This is less than the limit value of IVIS (55.1), which means that the test substance was not identified as a corrosive or severe irritant.
- Executive summary:
The test substance, Solvent Yellow 124, was tested for the evaluation the potential ocular corrosivity or severe irritancy as measured by its ability to induce opacity and increased permeability in an isolated bovine cornea.
The test was performed according to the Method B.47 Bovine Corneal Opacity and Permeability Test Method for Identifying Ocular Corrosives and Severe Irritants, Council Regulation (EC) No.1152/2010, published in O.J. L 324, 2010.
The test was performed using nine isolated bovine corneas. The testing was performed on three groups of corneas: test substance treatment group, positive control group and negative control group. Three corneas per group were used.
Open-chamber method was used, because the test substance was viscous liquid. The opacity and permeability of each cornea were measured. The In Vitro Irritancy Score (IVIS) was calculated from the values of opacity and permeability.
The In Vitro Irritancy Score (IVIS) for Solvent Yellow 124 was 1.90. This is less than the limit value of IVIS (55.1), which means that the test substance was not identified as a corrosive or severe irritant.
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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