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Diss Factsheets

Toxicological information

Skin irritation / corrosion

Currently viewing:

Administrative data

Endpoint:
skin irritation: in vivo
Remarks:
In vivo testing previously conducted before in vitro rules came into force
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1980-12-9 to 1980-12-12
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
24 hour exposure and termination at 72 hours without evidence of reversibility
Justification for type of information:
Test conducted prior to the introduction of in vitro methods.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1981
Report date:
1981

Materials and methods

Test guidelineopen allclose all
Qualifier:
equivalent or similar to guideline
Guideline:
other: Section 1500.41- Federal Hazardous Substances Act Regulations - 16 CFR
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
Deviations:
yes
Remarks:
24 hour exposure to the test material
Principles of method if other than guideline:
Six albino rabbits were clipped and then one side of the back was abraded to penetrate the stratum corneum with the other side kept intact. A 0.5 mL portion of the test material was applied to an abraded and an intact skin site of the same rabbit. A gauze patch was placed over each application site and an impervious material was wrapped around the trunk of the animal to hold the patches. The wrapping was removed after 24h. Treated areas were examined at 24h after treatment and scoring using the Draize method was done at 72h after treatment.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
2-tetradecyloxirane, reaction products with boric acid
EC Number:
701-392-2
IUPAC Name:
2-tetradecyloxirane, reaction products with boric acid
Test material form:
not specified
Details on test material:
- Date of receipt: 1980-11-19

Test animals

Species:
rabbit
Strain:
not specified
Details on test animals or test system and environmental conditions:
No data

Test system

Type of coverage:
occlusive
Preparation of test site:
other: abraded and intact
Vehicle:
unchanged (no vehicle)
Controls:
no
Amount / concentration applied:
TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.5 mL
Duration of treatment / exposure:
24 hour
Observation period:
72 hours
Number of animals:
6
Details on study design:
TEST SITE
- Area of exposure: back
- % coverage: not specified
- Type of wrap if used: gauze patch covered by impervious material.

REMOVAL OF TEST SUBSTANCE
- Washing (if done): No

SCORING SYSTEM: Draize

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
erythema score
Remarks:
intact skin
Basis:
animal #1
Time point:
other: mean 24/72 h
Score:
1
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
erythema score
Remarks:
abraded skin
Basis:
animal #1
Time point:
other: mean 24/72 h
Score:
1
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
erythema score
Remarks:
intact skin
Basis:
animal #2
Time point:
other: Mean 24/72 hours
Score:
1
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
erythema score
Remarks:
abraded skin
Basis:
animal #2
Time point:
other: mean 24/72 h
Score:
1
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
erythema score
Remarks:
intact skin
Basis:
animal #3
Time point:
other: mean 24/72 h
Score:
0.5
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
erythema score
Remarks:
abraded skin
Basis:
animal #3
Time point:
other: mean 24/72 h
Score:
1
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
erythema score
Remarks:
intact skin
Basis:
animal #4
Time point:
other: mean 24/72 h
Score:
0
Max. score:
4
Reversibility:
fully reversible
Remarks on result:
no indication of irritation
Irritation parameter:
erythema score
Remarks:
abraded skin
Basis:
animal #4
Time point:
other: mean 24/72 h
Score:
0
Max. score:
4
Reversibility:
fully reversible
Remarks on result:
no indication of irritation
Irritation parameter:
erythema score
Remarks:
intact skin
Basis:
animal #5
Time point:
other: mean 24/72 h
Score:
0
Max. score:
4
Reversibility:
fully reversible
Remarks on result:
no indication of irritation
Irritation parameter:
erythema score
Remarks:
abraded skin
Basis:
animal #5
Time point:
other: mean 24/72 h
Score:
0
Max. score:
4
Reversibility:
fully reversible
Remarks on result:
no indication of irritation
Irritation parameter:
erythema score
Remarks:
intact skin
Basis:
animal #6
Time point:
other: mean 24/72 h
Score:
0
Max. score:
4
Reversibility:
fully reversible
Remarks on result:
no indication of irritation
Irritation parameter:
erythema score
Remarks:
abraded skin
Basis:
animal #6
Time point:
other: mean 24/72 h
Score:
0.5
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
edema score
Remarks:
intact skin
Basis:
animal #1
Time point:
other: mean 24/72 h
Score:
1
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
edema score
Remarks:
abraded skin
Basis:
animal #1
Time point:
other: mean 24/72 h
Score:
1
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
edema score
Remarks:
intact skin
Basis:
animal #2
Time point:
other: mean 24/72 h
Score:
1
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
edema score
Remarks:
abraded skin
Basis:
animal #2
Time point:
other: mean 24/72 h
Score:
2
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
edema score
Remarks:
intact skin
Basis:
animal #3
Time point:
other: mean 24/72 h
Score:
1
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
edema score
Remarks:
abraded skin
Basis:
animal #3
Time point:
other: mean 24/72 h
Score:
1
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
edema score
Remarks:
intact skin
Basis:
animal #4
Time point:
other: mean 24/72 h
Score:
0
Max. score:
4
Reversibility:
fully reversible
Remarks on result:
no indication of irritation
Irritation parameter:
edema score
Remarks:
abraded skin
Basis:
animal #4
Time point:
other: mean 24/72 h
Score:
0
Max. score:
4
Reversibility:
fully reversible
Remarks on result:
no indication of irritation
Irritation parameter:
edema score
Remarks:
Intact skin
Basis:
animal #5
Time point:
other: mean 24/72 h
Score:
0
Max. score:
4
Reversibility:
fully reversible
Remarks on result:
no indication of irritation
Irritation parameter:
edema score
Remarks:
abraded skin
Basis:
animal #5
Time point:
other: mean 24/72 h
Score:
0
Max. score:
4
Reversibility:
fully reversible
Remarks on result:
no indication of irritation
Irritation parameter:
edema score
Remarks:
intact skin
Basis:
animal #6
Time point:
other: mean 24/72 h
Score:
0
Max. score:
4
Reversibility:
fully reversible
Remarks on result:
no indication of irritation
Irritation parameter:
edema score
Remarks:
abraded skin
Basis:
animal #6
Time point:
other: mean 24/72 h
Score:
0.5
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritant / corrosive response data:
- Very slight erythema was observed at the intact skin in two and three animals at 24 and 72 hours, respectively. Whereas in abraded skin, very slight erythema was observed in three and four animals at 24 and 72 hours, respectively. At 24 and 72 hours, very slight edema was observed in intact skin of three animals. At 24 and 72 hours, very slight edema was observed in abraded skin of two and three animals, respectively; whereas slight edema was observed in abraded skin of one animal at 24 and 72 hours.
- There was no evidence of reversibility over the limited timeframe of the study.
Other effects:
No data

Any other information on results incl. tables

Table 7.3.1/1: Primary skin irritation

Erythema and Eschar Formation

Reading (hrs)

Rabbit number

Average

1

2

3

4

5

6

Intact Skin

24

1

1

0

0

0

0

0.33

Intact Skin

72

1

1

1

0

0

0

0.50

Abraded Skin

24

1

1

1

0

0

0

0.50

Abraded Skin

72

1

1

1

0

0

1

0.67

Subtotal

2.00

Edema Formation

Intact Skin

24

1

1

1

0

0

0

0.50

Intact Skin

72

1

1

1

0

0

0

0.50

Abraded Skin

24

1

2

1

0

0

0

0.67

Abraded Skin

72

1

2

1

0

0

1

0.83

Subtotal

2.50

Total

4.50

Primary irritation score

1.13

Applicant's summary and conclusion

Interpretation of results:
not irritating
Remarks:
Migrated information Criteria used for interpretation of results: EU
Conclusions:
The test material is not irritating to the skin of rabbits under the conditions of the study. In accordance with EU CLP Regulation (EC) No. 1272/2008, classification of this substance is not required for skin irritation.
Executive summary:

Test Guidance

Skin irritation study performed by a similar method to 16 CFR 1500.41 of the Federal Hazardous Substances Act Regulations.

Method and Material

Six albino rabbits were clipped and then one side of the back was abraded to penetrate the stratum corneum with the other side kept intact. A 0.5 mL of the test material was applied to an abraded and an intact skin site of the same rabbit. A gauze patch was placed over each application site and an impervious material was wrapped around the trunk of the animal to hold the patches. The wrapping was removed after 24 hours. Treated areas were examined for erythema and edema using the Draize method of scoring at 24 and 72 hours.

Results

Very slight erythema was observed at the intact skin in two and three animals at 24 and 72 hours, respectively. Whereas in abraded skin, very slight erythema was observed in three and four animals at 24 and 72 hours, respectively. At 24 and 72 hours, very slight edema was observed in intact skin of three animals. At 24 and 72 hours, very slight edema was observed in abraded skin of two and three animals, respectively; whereas slight edema was observed in abraded skin of one animal at 24 and 72 hours. There was no evidence of reversibility over the limited timeframe of the study.

Conclusion

In accordance with EU CLP Regulation (EC) No. 1272/2008, classification of this substance is not required for skin irritation.