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Diss Factsheets

Toxicological information

Eye irritation

Currently viewing:

Administrative data

Endpoint:
eye irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Study period:
June 5, 2007 - September 26, 2007
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2007
Report date:
2007

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 405 (Acute Eye Irritation / Corrosion)
Version / remarks:
April 24, 2002
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion)
Version / remarks:
Official Journal of the European Communities L152, 2004
Deviations:
no
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
4-(4-ethoxy-2,3-difluorophenyl)-4'-propyl-1,1'-bi(cyclohexane)
EC Number:
602-941-8
Cas Number:
123560-48-5
Molecular formula:
C23H34F2O
IUPAC Name:
4-(4-ethoxy-2,3-difluorophenyl)-4'-propyl-1,1'-bi(cyclohexane)
Test material form:
solid

Test animals / tissue source

Species:
rabbit
Strain:
New Zealand White
Details on test animals or tissues and environmental conditions:
TEST ANIMALS
- Source:Charles River Wiga GmbH, Kisslegg
- Age at study initiation: appr. 26 weeks
- Weight at study initiation: 3.51 - 4.52 kg
- Housing: The animals were kept separately in special rabbit cages (manufacturer: Becker, type K99/30 KU) placed on mobile racks.
- Diet (e.g. ad libitum): ad libitum
- Water (e.g. ad libitum): ad libitum
- Acclimation period: 7 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 16 to 20
- Humidity (%): 52 to 75
- Air changes (per hr): not specified

IN-LIFE DATES: From: day 1 To: day 8

Test system

Vehicle:
unchanged (no vehicle)
Controls:
not required
Amount / concentration applied:
0.1 g per animal
Observation period (in vivo):
24, 48, and 72 hours, then daily up to day 8 of the experimental part
Number of animals or in vitro replicates:
3 female
Details on study design:
REMOVAL OF TEST SUBSTANCE
- Washing (if done): no

SCORING SYSTEM: according OECD-Guideline

TOOL USED TO ASSESS SCORE: hand-slit lamp / fluorescein

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
cornea opacity score
Basis:
animal #1
Time point:
24/48/72 h
Score:
0
Max. score:
4
Irritation parameter:
cornea opacity score
Basis:
animal #2
Time point:
24/48/72 h
Score:
0
Max. score:
4
Irritation parameter:
cornea opacity score
Basis:
animal #3
Time point:
24/48/72 h
Score:
0
Max. score:
4
Irritation parameter:
iris score
Basis:
animal #1
Time point:
24/48/72 h
Score:
0
Max. score:
2
Irritation parameter:
iris score
Basis:
animal #2
Time point:
24/48/72 h
Score:
0
Max. score:
2
Irritation parameter:
iris score
Basis:
animal #3
Time point:
24/48/72 h
Score:
0
Max. score:
2
Irritation parameter:
conjunctivae score
Basis:
animal #1
Time point:
24/48/72 h
Score:
0
Max. score:
3
Irritation parameter:
conjunctivae score
Basis:
animal #2
Time point:
24/48/72 h
Score:
0
Max. score:
3
Irritation parameter:
conjunctivae score
Basis:
animal #3
Time point:
24/48/72 h
Score:
0
Max. score:
3
Irritation parameter:
chemosis score
Basis:
animal #1
Time point:
24/48/72 h
Score:
0
Max. score:
4
Irritation parameter:
chemosis score
Basis:
animal #2
Time point:
24/48/72 h
Score:
0
Max. score:
4
Irritation parameter:
chemosis score
Basis:
animal #3
Time point:
24/48/72 h
Score:
0
Max. score:
4
Irritant / corrosive response data:
No signs of irritation were observed at the cornea or iris. All animals showed discharge (score 1) one hour after instillation of the test material. In two animals redness (score 1) was observed one hour after treatment. No abnormalities were detected in the untreated eyes.
Other effects:
none

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
The test item showed no relevant eye irritating potential.
Executive summary:

The test material was tested for its eye irritating properties according to OECD 405 under GLP conditions. Prior to testing, the hen's egg test on the chorioallantoic membrane was performed and no irritating potential could be detected. The test for primary eye irritation was performed initially with one animal and followed by the confirmatory test with two further animals. For the test of primary eye irritation, the test material was applied into the conjunctival sac of rabbits. The first examination of the eyes followed 1 hour after instillation. The other examinations of the eyes were performed daily for a further 7 days. No signs of irritation were observed at the cornea or iris. All animals showed discharge (score 1) one hour after instillation of the test material. In two animals redness (score 1) was observed one hour after treatment. No abnormalities were detected in the untreated eyes. No relevant eye irritating potential could be detected. The test material should not be classified as an eye irritant.