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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:
supporting study
Study period:
July 1973
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
Test was conducted according to methods similar to OECD 402 (limit test) and was performed pre-GLP. A concise description of the protocol is available and results are acceptable as basic data. .
Cross-reference
Reason / purpose for cross-reference:
read-across: supporting information
Reference
Endpoint:
skin irritation: in vivo
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
Test was conducted according to methods similar to OECD 402 (limit test) and was performed pre-GLP. A concise description of the protocol is available and results are acceptable as basic data. Furthermore, due to the read-across purpose it was given a Klimisch 2 rating, in accordance with the ECHA Practical guide #6 on the reporting of read-across in IUCLID. The justification for read across is provided in the attached background material of the chapter summary.
Justification for type of information:
Three in vivo skin irritation studies with 3 different NCSs showed that these could be considered irritating, while the study with orange oil did not result in skin irritation. D-Limonene is also known to be irritating. As D-limonene is present in all NCSs of this group at levels higher than the 20% threshold mentioned in the classification and labelling directive (1999/45/EC, DPD and 1272/2008/EC, CLP and as three studies showed evidence of skin irritation, these results are read across to the other NCSs and the whole group is considered irritating to the skin and classified as R38 or H315.

See also attached justification.
Reason / purpose for cross-reference:
read-across source
Irritation parameter:
other: Slight redness
Basis:
other: 6 out of 10 rabbits
Time point:
other: No information
Remarks on result:
other: No information on scoring system
Irritation parameter:
other: Moderate redness
Basis:
other: 2 out of 10 rabbits
Time point:
other: No information
Remarks on result:
other:
Remarks:
No information on scoring system
Irritation parameter:
other: Slight edema
Basis:
other: 7 out of 10 rabbits
Time point:
other: No information
Remarks on result:
other:
Remarks:
No information on scoring system
Irritation parameter:
other: Moderate edema
Basis:
other: 3 out of 10 rabbits
Time point:
other: No information
Remarks on result:
other:
Remarks:
No information on scoring system
Other effects:
No Symptomatology. Mortality: 1 out of 10 rabbbits died.

Slight redness - 6/10

Moderate redness - 2/10

Slight edema - 7/10

Moderate edema - 3/10

No information on scoring system used.

Interpretation of results:
moderately irritating
Remarks:
Criteria used for interpretation of results: not specified
Conclusions:
Skin irritation results are as follows: Slight redness - 6/10; Moderate redness - 2/10; Slight edema - 7/10; Moderate edema - 3/10. No information on scoring system used is given. Based on these results, the substance is considered moderately irritating.
Executive summary:

In this skin irritation test of Grapefruit Oil 10 rabbits were used. No guideline has been followed and there are no data on the test system and study design. Mortality, symptomatology, and skin irritation are recorded. No symptoms have been observed. 1 out of 10 rabbits died. Skin irritation results are as follows: Slight redness - 6/10; Moderate redness - 2/10; Slight edema - 7/10; Moderate edema - 3/10. No information on scoring system used is given. Based on these results, the substance is considered moderately irritating.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1973
Report date:
1973

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
In this skin irritation test of Grapefruit Oil 10 rabbits were used. There are no data on the test system and study design. Mortality, symptomatology, and skin irritation are recorded.
GLP compliance:
no
Remarks:
pre-GLP

Test material

Constituent 1
Reference substance name:
Grapefruit oil
IUPAC Name:
Grapefruit oil
Details on test material:
- Name of test material (as cited in study report): 73-21 Grapefruit oil

Test animals

Species:
rabbit
Strain:
not specified

Test system

Type of coverage:
not specified
Preparation of test site:
not specified
Vehicle:
not specified
Controls:
not specified
Duration of treatment / exposure:
No data
Observation period:
No data
Number of animals:
10

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
other: Slight redness
Basis:
other: 6 out of 10 rabbits
Time point:
other: No information
Remarks on result:
other: No information on scoring system
Irritation parameter:
other: Moderate redness
Basis:
other: 2 out of 10 rabbits
Time point:
other: No information
Remarks on result:
other:
Remarks:
No information on scoring system
Irritation parameter:
other: Slight edema
Basis:
other: 7 out of 10 rabbits
Time point:
other: No information
Remarks on result:
other:
Remarks:
No information on scoring system
Irritation parameter:
other: Moderate edema
Basis:
other: 3 out of 10 rabbits
Time point:
other: No information
Remarks on result:
other:
Remarks:
No information on scoring system
Other effects:
No Symptomatology. Mortality: 1 out of 10 rabbbits died.

Any other information on results incl. tables

Slight redness - 6/10

Moderate redness - 2/10

Slight edema - 7/10

Moderate edema - 3/10

No information on scoring system used.

Applicant's summary and conclusion

Interpretation of results:
moderately irritating
Remarks:
Criteria used for interpretation of results: not specified
Conclusions:
Skin irritation results are as follows: Slight redness - 6/10; Moderate redness - 2/10; Slight edema - 7/10; Moderate edema - 3/10. No information on scoring system used is given. Based on these results, the substance is considered moderately irritating.
Executive summary:

In this skin irritation test of Grapefruit Oil 10 rabbits were used. No guideline has been followed and there are no data on the test system and study design. Mortality, symptomatology, and skin irritation are recorded. No symptoms have been observed. 1 out of 10 rabbits died. Skin irritation results are as follows: Slight redness - 6/10; Moderate redness - 2/10; Slight edema - 7/10; Moderate edema - 3/10. No information on scoring system used is given. Based on these results, the substance is considered moderately irritating.