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Description of key information

Key value for chemical safety assessment

Skin irritation / corrosion

Link to relevant study records
Reference
Endpoint:
skin irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study conducted according to internationally accepted technical guideline and in compliance with GLP in recognized contract research organization. Despite some minor restrictions, the study report is fully adequate for assessment.
Qualifier:
according to guideline
Guideline:
OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
Version / remarks:
of 1981
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
Certified by BAM according to DIN EN 45001.
Species:
rabbit
Strain:
New Zealand White
Details on test animals or test system and environmental conditions:
- Number: 3 animals,
- Average bodyweight: 3 kg
- Housing: Individual housing in cages.
- Diet: Commercially available standard laboratory diet for rabbits ( Altromin, Lage, Germany).
- Water: Ad libitum

ENVIRONMENTAL CONDITIONS

Room temperature kept constant at 18±2°C, the relative humidity at 50-60%. 12 hours illumination per day.
Type of coverage:
semiocclusive
Preparation of test site:
shaved
Vehicle:
other: undiluted (no vehicle) after warming the test material to 40°C
Controls:
not required
Amount / concentration applied:
0.5 mL test material (after warming it to 40°C) per approx. 6 cm2 skin (2.5 cm x 2.5 cm) per animal
Duration of treatment / exposure:
4 hours
Observation period:
7 days post patch removal
Number of animals:
3
Details on study design:
TEST SITE PREPARATION

Samples of 0.5 mL of the warmed test substance were applied to the shaved skin of albino rabbits and covered with gauze squares of the size 2.5 cm x 2.5 cm on the skin. Patches were fixed with adhesive plaster. Untreated shaved skin served as controls.

TREATMENT PERIOD AND REMOVAL OF TEST SUBSTANCE

Semi-occlusive treatment lasted 4 hours. Then the dressings were removed and residual test substance was dabbed off the skin with a wet towel.

Time points of skin evaluation:

The treated skin patches were evaluated at 1 hour post patch removal and at 24, 48 and 72 h and 7 days post patch removal. Only differences from controls were considered to be positive reactions. The scoring system for the grading of skin reactions is listed in Table 1 (next field below).
Irritation parameter:
erythema score
Remarks:
as defined in Table 1
Basis:
mean
Remarks:
over 3 animals and 3 time points
Time point:
other: 24, 48, 72 h
Score:
0
Max. score:
4
Reversibility:
other: erythema or scab formation was not evident
Irritation parameter:
edema score
Remarks:
as defined in Table 1
Basis:
mean
Remarks:
over 3 animals and 3 time points
Time point:
other: 24, 48, 72 h
Score:
0
Max. score:
4
Reversibility:
other: edma formation was not evident
Irritant / corrosive response data:
In each animal, erythema, scab or edema formation was not evident at any observation time point of the study.
Other effects:
Mortality or behavioural changes indicative of an adverse effect were not evident. Weighing of the animals at 7 days post treatment revealed normal body weight gain.
Interpretation of results:
not irritating
Remarks:
Migrated information Criteria used for interpretation of results: EU
Endpoint conclusion
Endpoint conclusion:
no adverse effect observed (not irritating)

Eye irritation

Link to relevant study records
Reference
Endpoint:
eye irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study conducted according to internationally accepted technical guideline and in compliance with GLP in recognized contract research organization. Despite some minor restrictions, the study report is fully adequate for assessment.
Qualifier:
according to guideline
Guideline:
OECD Guideline 405 (Acute Eye Irritation / Corrosion)
Version / remarks:
of 1981
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
Certified by BAM according to DIN EN 45001.
Species:
rabbit
Strain:
New Zealand White
Details on test animals or tissues and environmental conditions:
- Number: 3 animals,
- Average bodyweight: 3.2 kg
- Housing: Individual housing in cages.
- Diet: Commercially available standard laboratory diet for rabbits ( Altromin, Lage, Germany).
- Water: Ad libitum

ENVIRONMENTAL CONDITIONS

Room temperature kept constant at 18±2°C, the relative humidity at 50-60%. 12 hours illumination per day.
Vehicle:
other: undiluted (no vehicle) after warming the test material to 37°C
Controls:
not required
Amount / concentration applied:
After warming undiluted test material (no vehicle) to 37°C, 0.1 ml of it was administered into the conjunctival sac of one eye per rabbit. The contralateral eye remained untreated to serve as a control.
Duration of treatment / exposure:
There was no mentioning in the report that eyes were rinsed after treatment. Consequently the treatment/exposure period was equivalent to the entire observation period following administration, which was 7 days, or lasted until removal of the test material by physiological mechanisms, whichever happened sooner.
Observation period (in vivo):
7 days
Number of animals or in vitro replicates:
3 adult rabbits
Details on study design:
There was no mentioning in the report that eyes were rinsed after administration of the test material.

Eyes were evaluated for occular lesions using ultraviolet light. The numerical scoring system listed in Table 1 in the field below was adopted. Time points of evaluation were: Pretest (prior to treatment), 1, 2, 4, 8, 24, 48, 72 and 96 hours after administration and daily thereafter until 7 days after administration. Grades attained at 24, 48 and 72 hours after administration were included in the mean gradings of ocular lesions used for eye irritation/corrosion classification.
Irritation parameter:
cornea opacity score
Basis:
mean
Remarks:
over 3 animals and 3 time points
Time point:
other: 24, 48, 72 h
Score:
0
Max. score:
4
Reversibility:
other: Corneal irritation or opacity was not evident during the study
Irritation parameter:
iris score
Basis:
mean
Remarks:
over 3 animals and 3 time points
Time point:
other: 24, 48, 72 h
Score:
0
Max. score:
2
Reversibility:
other: Iridal changes were not evident during the study
Irritation parameter:
conjunctivae score
Remarks:
(redness)
Basis:
mean
Remarks:
over 3 animals and 3 time points
Time point:
other: 24, 48, 72 h
Score:
0
Max. score:
3
Reversibility:
fully reversible within: 24 hours
Irritation parameter:
chemosis score
Basis:
mean
Remarks:
over 3 animals and 3 time points
Time point:
other: 24, 48, 72 h
Score:
0
Max. score:
4
Reversibility:
other: Chemosis was not evident during the study
Irritation parameter:
other: lacrimation score
Basis:
mean
Remarks:
over 3 animals and 3 time points
Time point:
other: 24, 48, 72 h
Score:
0
Max. score:
3
Reversibility:
fully reversible within: 24 hours
Irritant / corrosive response data:
Corneal and iridic lesions and chemosis were not evident throughout the study. Conjunctival redness and lacrimation, both findings grade 1, were seen in all treated eyes at 1, 2, 4 and/or 8 hours post dosing. Conjunctival redness had completely disappeared in one of the animals by 8 hours post dosing and in the other two by 24 hours post dosing and lacrimation had completely disappeared in two of the animals by 8 hours post dosing and in the other one by 24 hours post dosing. Daily examination of the eyes from 24 hours until 7 days post dosing did not reveal any findings.
Other effects:
Daily determination of bodyweight did not reveal any test related changes. Bodyweight gain was normal.
Interpretation of results:
not irritating
Remarks:
Migrated information Criteria used for interpretation of results: EU
Endpoint conclusion
Endpoint conclusion:
no adverse effect observed (not irritating)

Respiratory irritation

Endpoint conclusion
Endpoint conclusion:
no study available

Additional information

Justification for classification or non-classification

In view of the absence of any effects during the skin irritation study and the absence of relevant effects during the eye irritation study, the attained results do not necessitate any classification and labelling regarding skin or eye irritation according to EU classification rules [REGULATION (EC) 1272/2008 and DIRECTIVE 67/548/EEC].