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Diss Factsheets
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EC number: 922-520-5 | 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
Eye irritation
Administrative data
- Endpoint:
- eye irritation: in vitro / ex vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 08 May 2018 - 15 May 2018.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 437 (Bovine Corneal Opacity and Permeability Test Method for Identifying i) Chemicals Inducing Serious Eye Damage and ii) Chemicals Not Requiring Classification for Eye Irritation or Serious Eye Damage)
- Version / remarks:
- 09 October 2017
- Deviations:
- no
- GLP compliance:
- yes
Test material
- Reference substance name:
- C12-16 alkyl, glycerol ether
- EC Number:
- 922-520-5
- Molecular formula:
- N.A UVCB
- IUPAC Name:
- C12-16 alkyl, glycerol ether
- Test material form:
- liquid
- Details on test material:
- Identification: C12 – 16 alkyletherdiol
Appearance: Opaque white to light yellow liquid (determined by Charles River Den Bosch)
CAS: Not available
Lot/Batch: D7801-171116001
Date of Production: 17.11.2017
Best before Date: Within 2 years
UVCB 100%
1
Test animals / tissue source
- Species:
- cattle
- Details on test animals or tissues and environmental conditions:
- SOURCE OF COLLECTED EYES
- Source: young cattle, obtained from the slaughterhouse Vitelco, 's-Hertogenbosch, The Netherlands.
- Storage, temperature, and transport conditions of ocular tissue: eyes were excised by a slaughterhouse employee as soon as possible after slaughter. Subsequently, eyes were collected an transported in physiological saline in a suitable container under cooled conditions.
- The eyes were checked for unacceptable defects and those exhibiting defects were discarded.
Test system
- Vehicle:
- unchanged (no vehicle)
- Controls:
- yes, concurrent positive control
- yes, concurrent negative control
- Amount / concentration applied:
- TEST MATERIAL
- Amount applied: 750 µL - Duration of treatment / exposure:
- 10 ± 1 minutes
- Duration of post- treatment incubation (in vitro):
- 120 ±10 minutes in cMEM for opacity measurements and subsequently 90 ± 5 minutes in sodium-fluorescein for permeability determinations
- Number of animals or in vitro replicates:
- 3 replicates for the negative, positive, and treatment group each.
- Details on study design:
- TREATMENT METHOD: The medium from the anterior compartment was removed and 750 µL of either the negative control, positive control or the test item was introduced onto the epithelium of the cornea. The holders were slightly rotated, with the corneas maintained in a horizontal position, to ensure uniform distribution of the control or the test item over the entire cornea. Corneas were incubated in a horizontal position for 10 ± 1 minutes at 32.0 ± 1°C.
REMOVAL OF TEST SUBSTANCE
- Number of washing steps after exposure period: After the incubation the solutions were removed and the epithelium was washed with MEM with phenol red (Earle’s Minimum Essential Medium, Life Technologies) and thereafter with cMEM (MEM containing 1% (v/v) L-glutamine and 1% (v/v) Foetal Bovine Serum).
- POST-EXPOSURE INCUBATION: 120 ±10 minutes in cMEM for opacity measurements and subsequently 90 ±5 minutes in sodium-fluorescein for permeability determinations
METHODS FOR MEASURED ENDPOINTS:
- Corneal opacity: opacity meter (OP-KIT)
- Corneal permeability: passage of sodium fluorescein dye measured with the aid of a microtiter plate reader (TECAN Infinite® M200 Pro Plate Reader, OD490). OD490 values of less than 1.500 were used in the permeability calculation.
- Other: possible pH effects of the test substance on the corneas were recorded.
SCORING SYSTEM: In Vitro Irritancy Score (IVIS)
The mean opacity and mean permeability values (OD490) were used for each treatment group to calculate an in vitro score:
In vitro irritancy score (IVIS) = mean opacity value + (15 x mean OD490 value).
ACCEPTABILITY CRITERIA
The assay is considered acceptable if:
a) The positive control gives an in vitro irritancy score that falls within two standard deviations of the current historical mean.
b) The negative control responses should result in opacity and permeability values that are less than the upper limits of the laboratory historical range.
DECISION CRITERIA (see table 1):
A test substance that induces an IVIS ≤ 3 is not classified for eye irritancy (UN GHS: no category);
A test substance that induces IVIS >55 is defined as a corrosive or severe irritant (UN GHS: category 1);
For a test substance that induces an IVIS >3 and ≤55, no prediction on irritant potency can be made.
Results and discussion
In vitro
Results
- Irritation parameter:
- in vitro irritation score
- Run / experiment:
- Mean of 3 replicates
- Value:
- -0.3
- Vehicle controls validity:
- not applicable
- Negative controls validity:
- valid
- Positive controls validity:
- valid
- Remarks:
- Mean IVIS: 40
- Remarks on result:
- no indication of irritation
- Other effects / acceptance of results:
- - The corneas treated with the test item showed opacity values between -0.8 and 0.2
- Permeability values were ranging from 0.001 to 0.003
- Individual IVIS scores were 0.2, -0.5, -0.7 (n=3)
OTHER EFFECTS:
- No pH effect of the test item was observed on the rinsing medium
ACCEPTANCE OF RESULTS:
- Acceptance criteria met for negative control: yes, results were within historical range (IVIS ranging from 0.8 to 2.7).
- Acceptance criteria met for positive control: yes, results were within historical range (IVIS ranging from 31 to 48).
Applicant's summary and conclusion
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- A Bovine Corneal Opacity and Permeability test (BCOP) was performed according to OECD guideline 437 and GLP principles. C12-16 alkyletherdiol induced an IVIS ≤ 3, therefore no classification is required for eye irritation or serious eye damage.
- Executive summary:
The objective of this study was to evaluate the eye hazard potential of C12-16 alkyletherdiol as measured by its ability to induce opacity and increase permeability in an isolated bovine cornea using the Bovine Corneal Opacity and Permeability test (BCOP test).
This report describes the potency of chemicals to induce serious eye damage using isolated bovine corneas. The eye damage of the test item was tested through topical application for 10 minutes.
The study procedures described in this report were based on the most recent OECD guideline.
Batch D7801-171116001 of the test item was an opaque white to light yellow liquid. The test item was applied as it is (750 µL) directly on top of the corneas.
The negative control responses for opacity and permeability were less than the upper limits of the laboratory historical range indicating that the negative control did not induce irritancy on the corneas. The mean in vitro irritancy score of the positive control (Ethanol) was 40 and was within two standard deviations of the current historical positive control mean. It was therefore concluded that the test conditions were adequate and that the test system functioned properly.
C12 – 16 alkyletherdiol did not induce ocular irritation through both endpoints, resulting in a mean in vitro irritancy score of -0.3 after 10 minutes of treatment.
In conclusion, since C12 -16 alkyletherdiol induced an IVIS ≤ 3, no classification is required for eye irritation or serious eye damage.
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