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Diss Factsheets

Toxicological information

Skin irritation / corrosion

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Administrative data

Endpoint:
skin irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1988
Report date:
1988

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: 1982 and 1984 EPA TSCA Health Effects Test Guidelines (EPA Report 560/6-84-002 and 560/6-82-001)
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
4,4'-[(isopropylidene)bis(p-phenyleneoxy)]diphthalic dianhydride
EC Number:
253-781-7
EC Name:
4,4'-[(isopropylidene)bis(p-phenyleneoxy)]diphthalic dianhydride
Cas Number:
38103-06-9
Molecular formula:
C31H20O8
IUPAC Name:
5,5'-[propane-2,2-diylbis(4,1-phenyleneoxy)]bis(2-benzofuran-1,3-dione)
Details on test material:
Biphenol Dianhydride (BPA-DA)

Test animals

Species:
rabbit
Strain:
New Zealand White
Details on test animals or test system and environmental conditions:
Male and female New Zealand White rabbits, approximately 12 to 18 weeks of age, weighing 2.0 to 3.0 kg were obtained from Hazleton-Dutchland, Inc. The animals were acclimated for at least five days and individually housed in cages with wire floors. They were maintained on rabbit diet and provided water (municipal) ad libitum. Room temperature ranged from 67 °F to 70 °F and the relative humidity ranged between 48-56%. Room lights were on a 12-hour cycle.

Test system

Type of coverage:
semiocclusive
Preparation of test site:
shaved
Vehicle:
unchanged (no vehicle)
Controls:
no
Amount / concentration applied:
Six rabbits were dosed with 0.5 g of test material moistened with distilled water on the shaved dorsal area of the trunk. A one-inch square gauze patch was placed over the dose site and secured with adhesive tape. Plastic sheeting was secured loosely around the trunk of each animal.
Duration of treatment / exposure:
The exposure time was four hours.
Observation period:
Dermal scores were recorded at 1, 24, 48 and 72 hours after the end of the contact period.
Number of animals:
6

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
erythema score
Basis:
mean
Time point:
24/48/72 h
Score:
0
Remarks on result:
no indication of irritation
Irritation parameter:
edema score
Basis:
mean
Time point:
24/48/72 h
Score:
0
Remarks on result:
no indication of irritation
Irritant / corrosive response data:
No erythema/edema was observed for any animal at any time period.

Applicant's summary and conclusion

Interpretation of results:
other: Not classified according to EU criteria
Conclusions:
Under the conditions of this study, the test material is considered to be a non-irritant.
Executive summary:

The skin irritation potential of the test material was investigated in accordance with the US EPA TSCA Health Effects Test Guidelines under GLP conditions (Bushy Run Research Center, 1988).

Six New Zealand White rabbits were dosed with the test material in a semi-occlusive fashion for four hours. Dermal scores were recorded at 1, 24, 48 and 72 hours after the end of the contact period.

No erythema/oedema was observed for any animal at any time period.

Under the conditions of this study, the test material is considered to be a non-irritant.