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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:
March 18th - March 25th, 1987
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1987
Report date:
1987

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
Deviations:
yes
Remarks:
Purity of test substance not given.
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Octanoic acid, ester with 1,2,3-propanetriol
EC Number:
234-398-4
EC Name:
Octanoic acid, ester with 1,2,3-propanetriol
Cas Number:
11140-04-8
Molecular formula:
C8H16O2.xC3H8O3
IUPAC Name:
Octanoic acid, ester with 1,2,3-propanetriol
Test material form:
liquid: viscous
Specific details on test material used for the study:
Imwitor 908

Test animals

Species:
rabbit
Strain:
New Zealand White
Details on test animals or test system and environmental conditions:
TEST ANIMALS
- Source: David Percival Ltd., Cheshire, U.K.
- Age at study initiation: 12 - 16 weeks
- Weight at study initiation: 2.54 - 3.40 kg
- Housing: individually in suspended metal cages
- Diet (e.g. ad libitum): Rabbit Diet, Preston Farmers Ltd., Lincolnshire, U.K.
- Water (e.g. ad libitum): yes
- Acclimation period: 5d

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 16 - 19
- Humidity (%): 45 - 48
- Air changes (per hr): 15
- Photoperiod (hrs dark / hrs light): 12/12

Test system

Type of coverage:
semiocclusive
Preparation of test site:
other: clipped
Vehicle:
unchanged (no vehicle)
Controls:
other: untreated sites of the same animal served as control
Amount / concentration applied:
TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.5 mL
Duration of treatment / exposure:
4 hours
Observation period:
72 hours
Number of animals:
6
Details on study design:
TEST SITE
- Area of exposure: dorsal flank area
- % coverage: 2.5 cm x 2.5 cm
- Type of wrap if used: gauze patch, surgical adhesive tap, elasticated corset (TUBIGRIP)

REMOVAL OF TEST SUBSTANCE
After exposure period of 4 h any residual test material was removed by gentle swabbing with cotton wool soaked in distilled water.

SCORING SYSTEM: Draize

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
erythema score
Basis:
animal #1
Remarks:
mean of
Time point:
other: 24, 48 and 72 h
Score:
1.33
Max. score:
2
Reversibility:
fully reversible within: 7d
Remarks on result:
probability of mild irritation
Irritation parameter:
erythema score
Basis:
animal #2
Remarks:
mean of
Time point:
other: 24, 48 and 72 h
Score:
0.66
Max. score:
1
Reversibility:
fully reversible within: 7d
Remarks on result:
probability of weak irritation
Irritation parameter:
erythema score
Basis:
animal #3
Remarks:
mean of
Time point:
other: 24, 48 and 72 h
Score:
1
Max. score:
1
Reversibility:
fully reversible within: 7d
Remarks on result:
probability of mild irritation
Irritation parameter:
erythema score
Basis:
animal #4
Remarks:
mean of
Time point:
other: 24, 48 and 72 h
Score:
1.66
Max. score:
2
Reversibility:
fully reversible within: 7d
Remarks on result:
probability of mild irritation
Irritation parameter:
erythema score
Basis:
animal #5
Remarks:
mean of
Time point:
other: 24, 48 and 72 h
Score:
1
Max. score:
1
Reversibility:
fully reversible within: 7d
Remarks on result:
probability of mild irritation
Irritation parameter:
erythema score
Basis:
animal #6
Remarks:
mean of
Time point:
other: 24, 48 and 72 h
Score:
1
Max. score:
1
Reversibility:
fully reversible within: 7 d
Remarks on result:
probability of mild irritation
Irritation parameter:
edema score
Basis:
mean
Remarks:
of 6 tested animals and mean of
Time point:
other: 24, 48 and 72 h
Score:
0
Max. score:
4

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Executive summary:

The test material, octanoic acid, ester with 1,2,3 -propanetriol, was found to be a mild irritant to rabbit skin.