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EC number: 952-496-1 | CAS number: -
Eye irritation
Administrative data
- Endpoint:
- eye irritation: in vitro / ex vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 5th February 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
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 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)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- N/A
- Cas Number:
- N/A
- IUPAC Name:
- N/A
- Details on test material:
- LME 11311
Constituent 1
- Specific details on test material used for the study:
- Identification:
LME 11311
Batch:
Ua05 (258)
Purity:
99%
Molecular Weight:
292.38 g.mol-l
Physical state/Appearance:
Yellow solid
Expiry Date:
01 November 2023
Storage Conditions:
Room temperature in the dark
Test system
- Vehicle:
- unchanged (no vehicle)
- Controls:
- yes, concurrent positive control
- yes, concurrent negative control
- Amount / concentration applied:
- 0.75 mL neat
- Duration of treatment / exposure:
- 10 min
- Details on study design:
The undiluted test item was applied for 10 minutes followed by an incubation period of 120 minutes. Negative and positive control items were tested concurrently. The two endpoints, decreased light transmission through the cornea (opacity) and increased passage of sodium fluorescein dye through the cornea (permeability) were combined in an empirically derived formula to generate an In Vitro Irritancy Score (IVIS).
Results and discussion
In vitro
Results
- Irritation parameter:
- in vitro irritation score
- Run / experiment:
- 1
- Value:
- 20.1
- Vehicle controls validity:
- not applicable
- Negative controls validity:
- valid
- Positive controls validity:
- valid
- Other effects / acceptance of results:
- No prediction of eye irritation can be made.
Applicant's summary and conclusion
- Interpretation of results:
- study cannot be used for classification
- Conclusions:
- Based on the in vitro irritancy score, no prediction of eye irritation can be made.
- Executive summary:
1 SUMMARY
Introduction
The purpose of this test was to identify test items that can induce serious eye damage and to identify test items not requiring classification for eye irritation or serious eye damage. The Bovine Corneal Opacity and Permeability (BCOP) test method is an organotypic model that provides short-term maintenance of normal physiological and biochemical function of the bovine cornea in vitro. In this test method, damage by the test item is assessed by quantitative measurements of changes in corneal opacity and permeability.
The test method can correctly identify test items (both chemicals and mixtures) inducing serious eye damage as well as those not requiring classification for eye irritation or serious eye damage, as defined by the United Nations (UN) Globally Harmonized System of Classification and Labelling of Items (GHS) and EU Classification, Labelling and Packaging (CLP) of chemicals (Regulation (EC) No 1272/2008), and it was therefore endorsed as scientifically valid for both purposes. Test items inducing serious eye damage are classified as UN GHS and EU CLP Category 1. Items not classified for eye irritation or serious eye damage are defined as those that do not meet the requirements for classification as UN GHS/EU CLP Category 1 or 2 (2A or 2B), i.e. they are referred to as UN GHS/EU CLP No Category.
Method
The test item was applied neat for 240 minutes. Negative and positive control items were tested concurrently. The two endpoints, decreased light transmission through the cornea (opacity) and increased passage of sodium fluorescein dye through the cornea (permeability) were combined in an empirically derived formula to generate an In Vitro Irritancy Score (IVIS).
Data Interpretation
IVIS Classification < 3 No category. Not requiring classification to UN GHS or EU CLP >3 < 55 No prediction of eye irritation can be made >55 Category 1 UN GHS or EU CLP The In Vitro irritancy scores are summarized as follows:
Treatment In vitro Irritancy Score Test Item 20.1 Negative Control 2.1 Positive Control 114.8 Conclusion
No prediction of eye irritation can be made.
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