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EC number: 203-911-3 | CAS number: 111-82-0
Eye irritation
Administrative data
- Endpoint:
- eye irritation: in vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 31 Mar - 10 Apr 1992
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: GLP guideline study with acceptable restrictions, no data on analytical purity of the test item were given.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 992
- Report date:
- 1992
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 405 (Acute Eye Irritation / Corrosion)
- Deviations:
- yes
- Remarks:
- analytical purity of test substance not specified
- GLP compliance:
- yes
Test material
- Reference substance name:
- Methyl laurate
- EC Number:
- 203-911-3
- EC Name:
- Methyl laurate
- Cas Number:
- 111-82-0
- Molecular formula:
- C13H26O2
- IUPAC Name:
- methyl dodecanoate
- Details on test material:
- - Substance type: Lauric acid methyl ester
- Analytical purity: no data
- Physical state: liquid, colourless
- Expiration date of the lot/batch: 1993-09-02
- Storage condition of test material: Room temperature
Constituent 1
Test animals / tissue source
- Species:
- rabbit
- Strain:
- other: Kleinrussen , Chbb:HM
- Details on test animals or tissues and environmental conditions:
- TEST ANIMALS
- Source: Thomae GmbH, Biberach, Germany
- Weight at study initiation: mean 2460 g
- Housing: individually
- Diet: Ssniff rabbit diet K4, ad libitum
- Water: ad libitum
- Acclimation period: at least 1 week
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20 - 25
- Humidity (%): 45 - 70
- Photoperiod (hrs dark / hrs light): 12 / 12
Test system
- Vehicle:
- unchanged (no vehicle)
- Controls:
- other: the untreated eye served as control
- Amount / concentration applied:
- TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.1 mL - Duration of treatment / exposure:
- 24 h
- Observation period (in vivo):
- 72 hours
Reading time points: 1, 24, 48 and 72 h - Number of animals or in vitro replicates:
- 3
- Details on study design:
- REMOVAL OF TEST SUBSTANCE: rinsing with tap water after the 24 h exposure period.
SCORING SYSTEM: according to the council directive 84/449/EEC (Draize scoring system).
Results and discussion
In vivo
Resultsopen allclose all
- Irritation parameter:
- cornea opacity score
- Basis:
- mean
- Remarks:
- out of all 3 animals
- Time point:
- other: mean over 24, 48 and 72h
- Score:
- 0
- Max. score:
- 4
- Reversibility:
- other: reversibility: not applicable
- Remarks on result:
- other: no effect in any animal
- Irritation parameter:
- iris score
- Basis:
- mean
- Remarks:
- out of all 3 animals
- Time point:
- other: mean over 24, 48 and 72h
- Score:
- 0
- Max. score:
- 2
- Reversibility:
- other: reversibility: not applicable
- Remarks on result:
- other: no effect in any animal
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #1
- Time point:
- other: mean over 24, 48 and 72h
- Score:
- 0.33
- Max. score:
- 3
- Reversibility:
- fully reversible within: 72 h
- Remarks on result:
- other: redness graded 1 was seen at reading time points 1 and 24 h.
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #2
- Time point:
- other: mean over 24, 48 and 72h
- Score:
- 0
- Max. score:
- 3
- Reversibility:
- other: reversibility: not applicable
- Remarks on result:
- other: no effect
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #3
- Time point:
- other: mean over 24, 48 and 72h
- Score:
- 0
- Max. score:
- 3
- Reversibility:
- other: reversibility: not applicable
- Remarks on result:
- other: no effect
- Irritation parameter:
- chemosis score
- Basis:
- mean
- Remarks:
- of 3 animals
- Time point:
- other: mean over 24, 48 and 72h
- Score:
- 0
- Max. score:
- 4
- Reversibility:
- other: reversibility: not applicable
- Remarks on result:
- other: no effect in any animal
- Irritant / corrosive response data:
- Slight erythema was observed in one animal at reading time points 1 and 24 hours; at time point 1 hour only, the finding was further accompanied by lacrimation graded 2. In a further animal, slight erythema of grade 1 and lacrimation of grade 2 were reported for the 1 hour reading time point only. The third animal only showed lacrimation graded 2 at reading time point 1 hour.
Any other information on results incl. tables
Table 1: Individual evaluation of the eye lesions for time points 24, 48 and 72 hours
Animal No. |
Hours after application |
||||||||||||||
24 |
48 |
72 |
|||||||||||||
A |
B |
C |
D |
L |
A |
B |
C |
D |
L |
A |
B |
C |
D |
L |
|
1 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
- |
3 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
A = Cornea Score
B = Iris Score
C = Erythema Score
D = Chemosis Score
L = Lacrimation
Applicant's summary and conclusion
- Interpretation of results:
- not irritating
- Remarks:
- Migrated information Criteria used for interpretation of results: EU
- Conclusions:
- CLP: not classified
DSD: not classified
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