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Toxicological information

Skin irritation / corrosion

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Administrative data

Endpoint:
skin irritation: in vivo
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Study period:
1989-04-18 to 1989-05-26
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
Remarks:
For read-across justification see Section 13.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1989
Report date:
1989

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
GLP compliance:
no

Test material

Constituent 1
Reference substance name:
67989-23-5 (former CAS No.)
IUPAC Name:
67989-23-5 (former CAS No.)
Details on test material:
- Name of test material (as cited in study report): Witamol 218
- Physical state: liquid

- Nominal molecular formula (if other than submission substance): C35 H58 O6
- Nominal molecular weight (if other than submission substance): 574.85
- Nominal Smiles notation (if other than submission substance): O=C(c1ccc(cc1C(=O)O)C(=O)OCCCCCCCC)OCCCCCCCCCC
- Nominal InChl (if other than submission substance): 1S/C27H42O6/c1-3-5-7-9-11-12-14-16-20-33-27(31)23-18-17-22(21-24 (23)25(28)29)26(30)32-19-15-13-10-8-6-4-2/h17-18,21H,3-16,19-20H2,1-2H3, (H,28,29)

Test animals

Species:
rabbit
Strain:
other: Small White Russian
Details on test animals or test system and environmental conditions:
TEST ANIMALS
- Source: Fa. Dr. Karl Thomae GmbH, Biberach, Germany
- Age at study initiation: not mentioned
- Weight at study initiation: 2.1 - 2.3 kg
- Housing: single housing in stainless steel cages
- Diet (e.g. ad libitum): K4 complete feed for rabbits, ad libitum, supplied by Ssniff Spezialfutter GmbH, Soest, Germany
- Water (e.g. ad libitum): Drinking water ad libitum
- Acclimation period: 14 days


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

Test system

Type of coverage:
semiocclusive
Preparation of test site:
shaved
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:
4 hours
Observation period:
8 days
Number of animals:
3
Details on study design:
TEST SITE
- Area of exposure: 10 x 10 cm of shaved skin of the dorsal and lateral parts of the trunk of the animals, application of the test substance on a skin area of approx. 6 cm²
- % coverage: not mentioned
- Type of wrap if used: semi-occlusion with a gauze patch (2.5 cm x 2.5 cm). The patch was secured in position by an elastic bandage.

REMOVAL OF TEST SUBSTANCE
- Washing (if done): with warm water
- Time after start of exposure: 4 hours


SCORING SYSTEM: according to OECD guideline 404

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
erythema score
Basis:
animal #1
Time point:
24/48/72 h
Score:
1
Max. score:
1
Reversibility:
fully reversible within: 6 days
Irritation parameter:
erythema score
Basis:
animal #2
Time point:
24/48/72 h
Score:
2
Max. score:
2
Reversibility:
fully reversible within: 8 days
Irritation parameter:
erythema score
Basis:
animal #3
Time point:
24/48/72 h
Score:
1.7
Max. score:
2
Reversibility:
fully reversible within: 6 days
Irritation parameter:
edema score
Basis:
animal #1
Time point:
24/48/72 h
Score:
0
Max. score:
0
Reversibility:
fully reversible
Irritation parameter:
edema score
Basis:
animal #2
Time point:
24/48/72 h
Score:
0
Max. score:
0
Reversibility:
not reversible
Irritation parameter:
edema score
Basis:
animal #3
Time point:
24/48/72 h
Score:
0.3
Max. score:
1
Reversibility:
fully reversible within: 48 hours
Irritant / corrosive response data:
AVERAGE SCORE
- Erythema: 1.56
- Edema: 0.11
All animals showed slight to well-defined erythema, and two animals after 1 resp. 24 hours slight edema. Allanimals were free of symptoms after 6 - 8 days.
Other effects:
scurf formation in one animal

Any other information on results incl. tables

Table #: Irritant/corrosive response data for each animal at each observation time up to removal of each animal from the test

Score at time point / Reversibility

Erythema

Edema

Max. score: 4

Max. score: 4

60 min

1/2/1

 0/1/0

24 h

 1/2/2

 0/0/1

48 h

 1/2/2

 0/0/0

72 h

 1/2/1

 0/0/0

Average 24h, 48h, 72h

 1.56

 0.11

Reversibility*)

 c.

 c.

Average time (unit) for reversion

 8 days

 8 days

 

*) Reversibility: c. = completely reversible; n.c. = not completely reversible; n. = not reversible

 

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
All animals showed slight to well-defined erythema, and two animals after 1 resp. 24 hours slight edema. All animals were free of symptoms after 6 - 8 days.
1,2,4-Benzenetricarboxylic acid, mixed decyl and octyl triesters showed a slightly irritant effect on the skin of the test animals with a primary dermal irritation index (PDII) of 1.67/8. The average scores were as follows: Erythema: 1.56, Edema: 0.11
Executive summary:

Skin irritation of a structural analogue of the substance (1,2,4 -Benzenetricarboxylic acid, mixed decyl and octyl triesters) has been investigated in the rabbit using methods in accordance with OECD guideline 404 (12 May 1981).

The tested substance showed a slight irritating effect and the mean Irritation scores derived from the respective erythema and edema scores for the 24, 48 and 72 hours observations were 1.56 (erythema) and 0.11 (oedema).

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