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Diss Factsheets

Toxicological information

Eye irritation

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Administrative data

Endpoint:
eye irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Apr 1987
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1987
Report date:
1987

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 405 (Acute Eye Irritation / Corrosion)
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
2-(3-methoxypropyl)-9(or 10)-methylbenzimidazo[2,1-b]benzo[lmn][3,8]phenanthroline-1,3,6(2H)-trione
EC Number:
258-094-6
EC Name:
2-(3-methoxypropyl)-9(or 10)-methylbenzimidazo[2,1-b]benzo[lmn][3,8]phenanthroline-1,3,6(2H)-trione
Cas Number:
52673-15-1
Molecular formula:
C25H19N3O4
IUPAC Name:
17-(3-methoxypropyl)-6(or7)-methyl-3,10,17-triazahexacyclo[13.6.2.0²,¹.0,.0¹²,²².0¹,²³]tricosa-1(21),2,4(9),5,7,12(22),13,15(23),19-nonaene-11,16,18-trione
Test material form:
solid: particulate/powder

Test animals / tissue source

Species:
rabbit
Strain:
New Zealand White
Details on test animals or tissues and environmental conditions:
TEST ANIMALS
- Source: Nottingham University, UK
- Age at study initiation: 12 - 16 wks
- Weight at study initiation: 2.54 - 2.99 kg
- Housing: single metal cages
- Diet (e.g. ad libitum): ad lib.
- Water (e.g. ad libitum): ad lib.
- Acclimation period: min. 5 d

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 18 - 21°C
- Humidity (%): 60 - 65 r.h.
- Air changes (per hr): 15
- Photoperiod (hrs dark / hrs light): 12/12

Test system

Vehicle:
unchanged (no vehicle)
Controls:
yes, concurrent no treatment
Amount / concentration applied:
50 mg
Duration of treatment / exposure:
One treatment w/o removal
Observation period (in vivo):
72 h
Number of animals or in vitro replicates:
3
Details on study design:
REMOVAL OF TEST SUBSTANCE
No removal

SCORING SYSTEM: Draize scoring

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

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
cornea opacity score
Basis:
mean
Time point:
24/48/72 h
Score:
0
Max. score:
4
Remarks on result:
no indication of irritation
Irritation parameter:
iris score
Basis:
mean
Time point:
24/48/72 h
Score:
0.1
Max. score:
2
Reversibility:
fully reversible within: 48 h
Remarks on result:
no indication of irritation
Irritation parameter:
conjunctivae score
Basis:
mean
Time point:
24/48/72 h
Score:
0.67
Max. score:
3
Reversibility:
fully reversible within: 7 d
Remarks on result:
probability of weak irritation
Irritation parameter:
chemosis score
Basis:
mean
Time point:
24/48/72 h
Score:
0
Max. score:
4
Remarks on result:
no indication of irritation
Irritant / corrosive response data:
After 1 h: one animal showed dulling of the corneal surface (fully reversible within 24 h)
Other effects:
None

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
The test item did not cause eye irritating effects in rabbits. The weak signs of conjunctival redness were fully reversible within 7 d. The substance is not classifiable according to CLP criteria.