1-Ethoxy-2,3-difluoro-4-[4-(trans-4-pentylcyclohexyl)-1-cyclohexene-1-yl]-benzene

Eye irritation

Administrative data

Endpoint:

eye irritation: in vitro / ex vivo

Type of information:

experimental study

Adequacy of study:

key study

Study period:

November 27, 2017 - January 31, 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 492 (Reconstructed Human Cornea-like Epithelium (RhCE) Test Method for Identifying Chemicals Not Requiring Classification and Labelling for Eye Irritation or Serious Eye Damage)

Version / remarks:

July 28, 2015

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

other: DB-ALM Protocol No. 164: Ocular Irritation Assay for Chemicals using EpiOcular™ EIT,

Version / remarks:

September 14, 2015

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

other: EpiOcular Eye Irritation Test (OCL-200-EIT) for the prediction of acute ocular irritation of chemicals; For use with MatTek Corporation`s Reconstructed Human EpiOcular Model; MatTek Corporation

Version / remarks:

June 29, 2015

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

2,3-difluoro-1-propoxy-4-[4-(trans-4-propylcyclohexyl)-1-cyclohexen-1-yl]-benzene

EC Number:

600-065-0

Cas Number:

1003218-40-3

Molecular formula:

C24H34F2O

IUPAC Name:

2,3-difluoro-1-propoxy-4-[4-(trans-4-propylcyclohexyl)-1-cyclohexen-1-yl]-benzene

Specific details on test material used for the study:

TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing: No pre-treatment, the test item was applied neat to the tissues.

Test system

Vehicle:

unchanged (no vehicle)

Controls:

yes, concurrent positive control

yes, concurrent negative control

Amount / concentration applied:

TEST MATERIAL: 50 mg per tissue

NEGATIVE / VEHICLE CONTROL: 50 µL per tissue

Sterile deionized water was used as negative control.


POSITIVE CONTROL: 50 µL per tissue

Designation: Methyl acetate
Supplier: MatTek In Vitro Life Science Laboratories
Lot-No.: 032817ISA
Catalog #: TC-MA
Purity (GC): 99.7%
Appearance: Colorless liquid
Expiration date: March 28, 2018
Storage: 15 to 30°C

Duration of treatment / exposure:

6 hours

Number of animals or in vitro replicates:

in vitro: duplicate design

Results and discussion

In vitro

Results

Irritation parameter:

other: Viability %

Run / experiment:

Run 1 / Experiment 1

Value:

97.8

Vehicle controls validity:

not applicable

Negative controls validity:

valid

Positive controls validity:

valid

Remarks on result:

no indication of irritation

Other effects / acceptance of results:

OTHER EFFECTS:
- Visible damage on test system: No observations

ACCEPTANCE OF RESULTS:
1. The negative control OD is >0.8 and <2.5 (1.403 and 1.615).
2. The mean relative viability of the positive control is below 50% of the negative control viability (47.0%).
3. The difference of viability between the two relating tissues of a single chemical is <20% (values between 1.1% to 14.0%) in the same run (for positive and negative control tissues and tissues of single chemicals).

The study met all acceptance criteria

Any other information on results incl. tables

	Mean OD	Mean Viability
Negative Control	1.509	100.0%
Positive Control	0.709	47.0%
Test Item	1.475	97.8%

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

Under the conditions of the present study, the test item did not show an eye hazard potential. The test item is labeled non-irritant (UN GHS: No Category).

Executive summary:

This study was performed according to GLP and the methods applied are fully compliant with OECD TG 492. Under the conditions of the present study, the test item did not show an eye hazard potential. The test item is labeled non-irritant (UN GHS: No Category).