Registration Dossier

Administrative data

Endpoint:
skin irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Feb 2000
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2000
Report Date:
2000

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method B.4 (Acute Toxicity: Dermal Irritation / Corrosion)
Deviations:
no
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Test animals

Species:
rabbit
Strain:
Himalayan
Details on test animals and environmental conditions:
TEST ANIMALS
- Sex: female
- Source: LPT Laboratory of Pharmacology and Toxicology KG, 24601 Löhndorf, Germany
- Age at study initiation: 5.5-8.5 months
- Weight at study initiation: 2.9 kg
- Housing: individual
- Diet: ad libitum
- Water: ad libitum
- Acclimation period: at least 20 days


ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20 +/- 3
- Humidity (%): 50 +/- 20
- Photoperiod (hrs dark / hrs light): 12 / 12

Test system

Type of coverage:
semiocclusive
Preparation of test site:
shaved
Vehicle:
other: aqua ad iniectabilia
Controls:
other: the surrounding untreated skin served as control
Amount / concentration applied:
0.5 g
Duration of treatment / exposure:
4 hours
Observation period:
1, 24, 48 and 72 hours after patch removal
Number of animals:
3
Details on study design:
TEST SITE
- Area of exposure: approx. 6 cm²
- Type of wrap if used: gauze patch, non-irritating tape

REMOVAL OF TEST SUBSTANCE
- Washing: no residual test item had to be removed
- Time after start of exposure: 4 hours

SCORING SYSTEM: according to DRAIZE

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
erythema score
Basis:
mean
Time point:
other: 24, 48, 72 hours
Score:
0
Max. score:
4
Reversibility:
other: not applicable
Irritation parameter:
edema score
Basis:
mean
Time point:
other: 24, 48, 72 hours
Score:
0
Max. score:
4
Reversibility:
other: not applicable
Other effects:
No systemic intolerance reactions were observed.

Applicant's summary and conclusion

Executive summary:

In a dermal irritation study according to OECD TG 404 the test substance was applied under semiocclusive dressings for 4 hours to the shaved skin of 3 female rabbits. Skin irritation was assessed after 1, 24, 48 and 72 hours using the Draize scale. The mean irritation indices for erythema and edema were 0 of max. 4. No systemic intolerance reactions were observed.

According to classification criteria Imidazotriazinon is not an irritant to the skin.