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Diss Factsheets

Toxicological information

Skin irritation / corrosion

Currently viewing:

Administrative data

Endpoint:
skin irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1988
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1988
Report date:
1988

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
Deviations:
no
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
1-acetyl-4-(3-dodecyl-2,5-dioxo-1-pyrrolidinyl)-2,2,6,6-tetramethylpiperidine
EC Number:
411-930-5
EC Name:
1-acetyl-4-(3-dodecyl-2,5-dioxo-1-pyrrolidinyl)-2,2,6,6-tetramethylpiperidine
Cas Number:
106917-31-1
Molecular formula:
C27H48N2O3
IUPAC Name:
1-(1-acetyl-2,2,6,6-tetramethylpiperidin-4-yl)-3-dodecylpyrrolidine-2,5-dione
Test material form:
liquid

Test animals

Species:
rabbit
Strain:
other: small white Russian, Chbb-SPF
Details on test animals or test system and environmental conditions:
TEST ANIMALS
- Source: Dr. Karl Thomae GmbH, Biberach
- Weight at study initiation: 2.3-2.4 kg
- Housing: individual in stainless steel cages
- Diet (e.g. ad libitum): K4 complete feed for rabbits, Ssniff Spezialfutter GmbH, Soest, ad libitum
- Water (e.g. ad libitum): Tap water, ad libitum
- Acclimation period: 14 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20 +/- 1°C
- Humidity (%): 60 +/- 5 %
- Air changes (per hr): 15
- Photoperiod (hrs dark / hrs light): 12/12

IN-LIFE DATES:
From: 10.5 To: 24.5.1988

Test system

Type of coverage:
semiocclusive
Preparation of test site:
shaved
Vehicle:
unchanged (no vehicle)
Controls:
no
Amount / concentration applied:
0.5 cm³ test substance
Duration of treatment / exposure:
4 h
Observation period:
1 h, 24 h, 48 h, 72 h, 6 days, 8 days, 10 days, 14 days
Number of animals:
3
Details on study design:
TEST SITE
- Area of exposure: 6 cm2
- Type of wrap if used: mull patch (2.5 x 2.5 cm2) covered with a polyethylene film

REMOVAL OF TEST SUBSTANCE
- Washing (if done): after 4 h exposure the substance residues are carefully washed off with warm water

OBSERVATION TIME POINTS
1, 24, 48, 72 h and 6, 8, 10 and days

SCORING SYSTEM:
- Method of calculation: according to OECD Guideline

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
erythema score
Basis:
animal #1
Remarks:
(mean score 1)
Time point:
24/48/72 h
Score:
3.7
Max. score:
4
Reversibility:
fully reversible within: 14 days
Irritation parameter:
erythema score
Basis:
animal #2
Remarks:
(mean score 2)
Time point:
24/48/72 h
Score:
3.7
Max. score:
4
Reversibility:
fully reversible within: 14 days
Irritation parameter:
erythema score
Basis:
animal #3
Remarks:
(mean score 3)
Time point:
24/48/72 h
Score:
3.7
Max. score:
4
Reversibility:
fully reversible within: 14 days
Irritation parameter:
edema score
Basis:
animal #1
Remarks:
(mean score 1)
Time point:
24/48/72 h
Score:
4
Max. score:
4
Reversibility:
fully reversible within: 14 days
Irritation parameter:
edema score
Basis:
animal #2
Remarks:
(mean score 2)
Time point:
24/48/72 h
Score:
4
Max. score:
4
Reversibility:
fully reversible within: 14 days
Irritation parameter:
edema score
Basis:
animal #3
Time point:
24/48/72 h
Score:
4
Max. score:
4
Reversibility:
fully reversible within: 14 days
Irritant / corrosive response data:
Reversibility of any observed effect: Changes fully reversible within 14 days

Applicant's summary and conclusion

Interpretation of results:
Category 2 (irritant) based on GHS criteria
Conclusions:
The substance showed an irritant effect on the skin of male rabbits.
Executive summary:

To test the acute skin irritant effect, the test substance was applied to the shaven dorsal skin of rabbits. The product was administered undiluted, and the time of exposure in the patch test was 4 hours. The test item showed an irritant effect on the skin of male rabbits, effects were fully reversible within 14 days.