Decanoic acid, mixed esters with heptanoic acid, octanoic acid, pentaerythritol and valeric acid

Skin irritation / corrosion

Administrative data

Endpoint:

skin irritation: in vivo

Type of information:

migrated information: read-across based on grouping of substances (category approach)

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Comparable to guideline study with acceptable restrictions. (Limited documentation but relevant data given)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1991

Report date:

1991

Materials and methods

Test guideline

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 404 (Acute Dermal Irritation / Corrosion)

Deviations:

yes

Remarks:

limited documentation but relevant data given

GLP compliance:

not specified

Test material

Test material information

Constituent 1

Reference substance name:

Fatty acids, C5-10, esters with pentaerythritol

EC Number:

270-291-9

EC Name:

Fatty acids, C5-10, esters with pentaerythritol

Cas Number:

68424-31-7

Molecular formula:

C25H44O8 to C45H84O8

Details on test material:

- Name of test material (as cited in study report): pentaerythritol C7-C10 Tetraester
- Analytical purity: according to the manufacturer, the test was conducted with the pure substance without the addition of any substances.

Test animals

Species:

rabbit

Strain:

New Zealand White

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Weight at study initiation: 5.0 - 5.2 g

Test system

Type of coverage:

semiocclusive

Preparation of test site:

shaved

Vehicle:

unchanged (no vehicle)

Controls:

not required

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.5 mL

Duration of treatment / exposure:

4 h

Observation period:

4 d
Reading time points: 30 - 60 min, 24, 48, 72 and 96 h

Number of animals:

3 (females)

Details on study design:

TEST SITE
- Area of exposure: 2.5 cm x 2.5 cm

REMOVAL OF TEST SUBSTANCE
- Washing (if done): cleansing with clean warm water
- Time after start of exposure: 4 h (upon removal of the dressing)

SCORING SYSTEM: Draize scoring system

Results and discussion

In vivo

Results

Results 1

Irritation parameter:

erythema score

Basis:

animal #1

Time point:

other: mean over 24 h, 48 h and 72 h

Score:

1.3

Max. score:

4

Reversibility:

fully reversible within: 4 d

Results 2

Irritation parameter:

erythema score

Basis:

animal #2

Time point:

other: mean over 24 h, 48 h and 72 h

Score:

1.7

Max. score:

4

Reversibility:

fully reversible within: 4 d

Results 3

Irritation parameter:

erythema score

Basis:

animal #3

Time point:

other: mean over 24 h, 48 h and 72 h

Score:

1.3

Max. score:

4

Reversibility:

fully reversible within: 4 d

Results 4

Irritation parameter:

edema score

Basis:

animal #1

Time point:

other: mean over 24 h, 48 h and 72 h

Score:

0.3

Max. score:

4

Reversibility:

fully reversible within: 48 h

Results 5

Irritation parameter:

edema score

Basis:

animal #2

Time point:

other: mean over 24 h, 48 h and 72 h

Score:

0.3

Max. score:

4

Reversibility:

fully reversible within: 48 h

Results 6

Irritation parameter:

edema score

Basis:

animal #3

Time point:

other: mean over 24 h, 48 h and 72 h

Score:

0.3

Max. score:

4

Reversibility:

fully reversible within: 48 h

Any other information on results incl. tables

Table 1: Erythema scores

Animal Number	24 hours	48 hours	72 hours	96 hours	Mean Score
26	2	1	1	0	1.3
35	2	2	1	0	1.7
36	2	1	1	0	1.3

 

Table 2: Edema Score

Animal Number	24 hours	48 hours	72 hours	96 hours	Mean Score
26	1	0	0	0	0.3
35	1	0	0	0	0.3
36	1	0	0	0	0.3

Applicant's summary and conclusion

Interpretation of results:

not irritating

Remarks:

Migrated information Criteria used for interpretation of results: EU

Conclusions:

CLP: not classified
DSD: not classified