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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:
1989/10/09 - 1989/10/26
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
A read-across study with an analogous substance was scientifically justified, because the target substance is the major component, and the central member of an homologous series of components, of the source substances, possessing identical functional groups and extremely similar structures. It is reasonable to expect that the toxicological properties of the target and source substances will not be markedly different. On this basis, experimental data on the source substances are expected to be directly applicable to the target substance, and can be used to adequately predict its properties. Further details are provided in an attached document to the irritation/corrosion endpoint summary.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1989
Report date:
1989

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 405 (Acute Eye Irritation / Corrosion)
Deviations:
no
GLP compliance:
yes

Test material

Constituent 1
Reference substance name:
L-Glutamic acid, N-coco acyl derivs., monosodium salts
EC Number:
269-087-2
EC Name:
L-Glutamic acid, N-coco acyl derivs., monosodium salts
Cas Number:
68187-32-6
IUPAC Name:
68187-32-6

Test animals / tissue source

Species:
rabbit
Strain:
New Zealand White
Details on test animals or tissues and environmental conditions:
TEST ANIMALS
- Source: David Percival Ltd., Moston, Sandbach, Cheshire, U.K.
- Age at study initiation: 12-16 weeks
- Weight at study initiation: 2.32-2.74 kg
- Housing: individually house in suspended metal cages
- Diet (e.g. ad libitum): ad libitum
- Water (e.g. ad libitum): ad libitum
- Acclimation period: 5 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 14-20
- Humidity (%): 52-65
- Air changes (per hr): 15
- Photoperiod (hrs dark / hrs light): 12/12

IN-LIFE DATES: From: To:

Test system

Vehicle:
unchanged (no vehicle)
Controls:
other: adjacent eye served as a control.
Amount / concentration applied:
TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.1 mL
Observation period (in vivo):
1h, 24h, 48h, 72h
Number of animals or in vitro replicates:
3
Details on study design:
SCORING SYSTEM:

The data relating to the conjunctivae were designated by the letters A (redness), B (chemosis) and C (discharge), those relating to the iris designated by the letter D and those relating to the cornea by the letters E (degree of opacity) and F (area of opacity). For each tissue the total score was calculated as follows:

Total score for conjunctivae = (A + B + C) x 2
Total score for iris = D x 5
Total score for cornea = (E x F) x 5

TOOL USED TO ASSESS SCORE: standard ophthalmoscope

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
cornea opacity score
Basis:
animal #1
Remarks:
mean
Time point:
24/48/72 h
Score:
1.7
Max. score:
3
Reversibility:
fully reversible within: 7 days
Irritation parameter:
cornea opacity score
Basis:
animal #2
Remarks:
mean
Time point:
24/48/72 h
Score:
2
Max. score:
3
Reversibility:
fully reversible within: 14 days
Irritation parameter:
cornea opacity score
Basis:
animal #3
Remarks:
maen
Time point:
24/48/72 h
Score:
1.7
Max. score:
3
Reversibility:
fully reversible within: 14 days
Irritation parameter:
iris score
Basis:
animal #1
Remarks:
mean
Time point:
24/48/72 h
Score:
1
Max. score:
1
Reversibility:
fully reversible within: 7 days
Irritation parameter:
iris score
Basis:
animal #2
Time point:
24/48/72 h
Score:
1
Max. score:
1
Reversibility:
fully reversible within: 14 days
Irritation parameter:
iris score
Basis:
animal #3
Remarks:
mean
Time point:
24/48/72 h
Score:
1
Max. score:
1
Reversibility:
fully reversible within: 14 days
Irritation parameter:
iris score
Basis:
animal #3
Time point:
24/48/72 h
Score:
1
Max. score:
1
Reversibility:
fully reversible within: 14 days
Irritation parameter:
conjunctivae score
Basis:
animal #1
Remarks:
mean
Time point:
24/48/72 h
Score:
2.7
Max. score:
3
Reversibility:
fully reversible within: 7 days
Irritation parameter:
conjunctivae score
Basis:
animal #2
Remarks:
mean
Time point:
24/48/72 h
Score:
3
Max. score:
3
Reversibility:
fully reversible within: 14 days
Irritation parameter:
conjunctivae score
Basis:
animal #3
Remarks:
mean
Time point:
24/48/72 h
Score:
3
Max. score:
3
Reversibility:
fully reversible within: 14 days
Irritation parameter:
chemosis score
Basis:
animal #1
Remarks:
mean
Time point:
24/48/72 h
Score:
2
Max. score:
3
Reversibility:
fully reversible within: 7 days
Irritation parameter:
chemosis score
Basis:
animal #2
Remarks:
mean
Time point:
24/48/72 h
Score:
2.3
Max. score:
3
Reversibility:
fully reversible within: 14 days
Irritation parameter:
chemosis score
Basis:
animal #3
Remarks:
mean
Time point:
24/48/72 h
Score:
3
Max. score:
3
Reversibility:
fully reversible within: 14 days

Applicant's summary and conclusion

Interpretation of results:
Category II
Remarks:
Migrated information Criteria used for interpretation of results: EU
Executive summary:

The test substance was investigated for its eye irritation potential in accordance with OECD guideline 405 under GLP conditions. The mean scores for cornea, conjunctiva, iris effects and chemosis were 1.8, 2.9, 1 and 2.4. All effects were reversible after 14 days. Consequently the test substance is considered to be eye irritating.