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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:
20 Apr - 4 May 1993
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The study was conducted according to OECD Guideline 405 and in compliance with GLP.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1993
Report date:
1993

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
Chemical structure
Reference substance name:
Dioctadecyl disulphide
EC Number:
219-702-5
EC Name:
Dioctadecyl disulphide
Cas Number:
2500-88-1
Molecular formula:
C36H74S2
IUPAC Name:
dioctadecyl disulphide
Constituent 2
Reference substance name:
Di-n-octadecyl disulphide
IUPAC Name:
Di-n-octadecyl disulphide
Constituent 3
Reference substance name:
Hostanox SE 10
IUPAC Name:
Hostanox SE 10

Test animals / tissue source

Species:
rabbit
Strain:
New Zealand White
Details on test animals or tissues and environmental conditions:
TEST ANIMALS
- Source: Chemisch pharmazeutsche Fabrik Dr. Karl Thomae GmbH, Biberach, Germany
- Age at study initiation: 3-5 months
- Weight at study initiation: 3.3-3.6 kg
- Housing: n fully air-conditioned rooms, separate cages (arranged in a battery)
- Diet (e.g. ad libitum): Altromin 2123 maintenance diet - rabbits (Altromin GmbH, Lage/Lippe), ad libitum and hay (approx. 15 g daily)
- Water (e.g. ad libitum): deionised, chlorinated water from automatic water dispenser, ad libitum

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 18 +/-3°C
- Humidity (%): 55+/-20%
- Photoperiod (hrs dark / hrs light): 12/12

IN-LIFE DATES: From: 20.04.1993 To: 04.05.1993

Test system

Vehicle:
unchanged (no vehicle)
Controls:
not required
Amount / concentration applied:
100 mg
Duration of treatment / exposure:
24 h
Observation period (in vivo):
The eyes were examined 1, 24, 48 and 72 hours, 7 days after application of the test substance.
At 24 and 72 hours the eyes were also examined for corneal lesions under UV light after instillation of one drop of 0.01 % fluorescein-sodium solution. Lesions in cornea, iris or conjunctivae were graded numerically.
Number of animals or in vitro replicates:
3
Details on study design:
24 hours after application and at all other designated examination times at which the treated eyes still showed discharge or at which a corneal examination with fluorescein-sodium solution took place, the treated eyes were washed out thoroughly with physiological saline at approx. 37 °C.


SCORING SYSTEM:

CORNEA
Degree of opacity (most dense area used)
No opacity ...................................................................................................................0
Scattered or diffuse areas, details of iris clearly visible........................................1
Easily discernible translucent areas, details of iris slightly obscured................2
Opalescent areas, no details of iris visible , size of pupil barely discernible ....3
Opaque, iris invisible ..................................................................................................4

Affected area (Opactiy and fluorescein-test)
0 = no translucence
1 = punctiform up to 1/4
2 = more than 1/4 up to 1/2
3 = more than 1/2 up to 3/4
4 = more than 3/4 up t o 4/4

IRIS
Normal ......................................................................................................................... 0
Folds above normal , congestion, swelling, circumcorneal injection (any of all of these or combination of any thereof); iris still reacting to light
(sluggish reaction is positive) ......................... .........................................................1
No reaction to light, haemorrhage, gross destruction (any or all of these) ......2


CONJUNCTIVAE

Redness (refers to palpebral and bulbar conjunctivae)
Blood vessels normal...............................................................................................................0
Blood vessels definitely injected above normal ................................................................. 1
More diffuse, deeper crimson red, individual blood vessels not easily discernible .....2
Diffuse beefy red......................................................................................................................3

Chemosi s (refers to palpebral and bulbar conjunctivae)
No swelling .........................................................................................0
Any swelling above normal (includes nictitating membran) ..... 1
Obvious swelling with partial eversion of l i d s ...........................2
Swelling with lids about half closed ................................................3
Swelling with lids half closed to completely closed.......................4

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
cornea opacity score
Basis:
mean
Time point:
24/48/72 h
Score:
0.1
Max. score:
4
Reversibility:
fully reversible
Remarks:
48 h
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:
0.3
Max. score:
4
Reversibility:
fully reversible within: 48 h
Irritation parameter:
iris score
Basis:
mean
Time point:
24/48/72 h
Score:
0.1
Max. score:
2
Reversibility:
fully reversible within: 48 h
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:
0.3
Max. score:
2
Reversibility:
fully reversible within: 48 h
Irritation parameter:
conjunctivae score
Basis:
mean
Time point:
24/48/72 h
Score:
1.2
Max. score:
3
Reversibility:
fully reversible within: 7 days
Irritation parameter:
conjunctivae score
Basis:
animal #1
Time point:
24/48/72 h
Score:
0.7
Max. score:
3
Reversibility:
fully reversible within: 72 h
Irritation parameter:
conjunctivae score
Basis:
animal #2
Time point:
24/48/72 h
Score:
1
Max. score:
3
Reversibility:
fully reversible within: 7 days
Irritation parameter:
conjunctivae score
Basis:
animal #3
Time point:
24/48/72 h
Score:
2
Max. score:
3
Reversibility:
fully reversible within: 7 days
Irritation parameter:
chemosis score
Basis:
mean
Time point:
24/48/72 h
Score:
0.3
Max. score:
4
Reversibility:
fully reversible within: 72 h
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:
0.3
Max. score:
4
Reversibility:
fully reversible within: 48 h
Irritation parameter:
chemosis score
Basis:
animal #3
Time point:
24/48/72 h
Score:
0.7
Max. score:
4
Reversibility:
fully reversible within: 72 h
Irritant / corrosive response data:
Swelling of the lids and redness of the conjunctiva and iris was observed one hour after application. These symptoms were reduced at 24 to 48 hours and dissappeared by 7 days.
The test substance is not considered irritating.

Any other information on results incl. tables

Swelling of the lids and redness of the conjunctiva and iris was observed one hour after application. These symptoms were reduced at 24 to 48 hours and dissappeared by 7 days. The test substance is not considered irritating.

Applicant's summary and conclusion

Interpretation of results:
not irritating
Remarks:
Migrated information Criteria used for interpretation of results: EU
Conclusions:
With reference the reported scores (reversibility of effects) Hostanox SE 10 does not have to be classified as irritant to the eyes according to the criteria laid down in the EU Dangerous Substances Directive (67/548/EEC) and in the EU Classification Labelling and Packaging Regulation (1272/2008/EC).
Executive summary:

Hostanox SE 10 was tested for its eye irritant properties in 3 New Zealand White rabbits.The study was performed according to OECD Guideline 405. Mild effects were observed in all animals 24, 48 and 72 hours after application. Swelling of the lids and redness of the conjunctiva and iris was observed one hour after application. These symptoms were reduced at 24 to 48 hours and disappeared by 7 days.

With reference the reported scores (reversibility of effects) Hostanox SE 10 does not have to be classified as irritant to the eyes according to the criteria laid down in the EU Dangerous Substances Directive (67/548/EEC) and in the EU Classification Labelling and Packaging Regulation (1272/2008/EC).