Zirconium di(acetate) oxide

Skin irritation / corrosion

Administrative data

Endpoint:

skin irritation: in vivo

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Non-GLP guideline study, available as unpublished report, no restrictions, fully adequate for assessment.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1986

Report date:

1986

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 404 (Acute Dermal Irritation / Corrosion)

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method B.4 (Acute Toxicity: Dermal Irritation / Corrosion)

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

Zirconium di(acetate) oxide

EC Number:

225-924-3

EC Name:

Zirconium di(acetate) oxide

Cas Number:

5153-24-2

Molecular formula:

C4 H6 O5 Zr

IUPAC Name:

zirconium di(acetate) oxide

Details on test material:

- Name of test material (as cited in study report): zirkon-acetat
- Physical state: liquid

Test animals

Species:

rabbit

Strain:

New Zealand White

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: Kleintierfarm Madoerin AG, CH 4414 Fuellinsdorf, Switzerland
- Age at study initiation: 14-15 weeks
- Weight at study initiation: 1.9-2.8 kg
- Housing: individually in stainless steel cages equipped with an automatic cleaning and drinking system
- Diet: pelleted standard Kliba 341, Batch 17/86 rabbit maintenance diet, ad libitum
- Water: community tap water from Itingen, ad libitum
- Acclimation period: 3 days under test conditions after veterinary examination

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 22 ± 3
- Humidity (%): 40-70
- Air changes (per hr): 10-15
- Photoperiod (hrs dark / hrs light): 12 / 12

Test system

Type of coverage:

occlusive

Preparation of test site:

other: clipped

Vehicle:

unchanged (no vehicle)

Controls:

no

Amount / concentration applied:

0.5 mL

Duration of treatment / exposure:

4 hours

Observation period:

72 hours

Number of animals:

3 (2 males, 1 female)

Details on study design:

TEST SITE
After approximately 24 hours before treatment, the dorsal fur was shaved with an electric clipper, exposing an area of approximately 100 square centimeters (10 x 10 cm). On test day 1, 0.5 ml of the test article was applied to the intact skin of the shaved area. It was covered with a 3 x 3 cm patch of surgical gauze. The gauze was covered with aluminium foil and then covered with an occlusive dressing. The dressing was wrapped around the abdomen and anchored with an elastic bandage.

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

SCORING SYSTEM:
No erythema: 0
Very slight erythema (barely perceptible): 1
Well defined erythema: 2
Moderate to severe erythema: 3
Severe erythema (beet redness) to slight eschar formation (injuries in depth): 4
Maximum possible score: 4

No edema: 0
Very slight edema (barely perceptible): 1
Slight edema (edges of area well defined by definite raising): 2
Moderate edema (raised approximately 1 mm): 3
Severe edema (raised mode than 1 mm and extending beyond area of exposure): 4
Maximum possible score: 4

Maximum cumulative score: 8

Results and discussion

In vivo

Results

Results 1

Irritation parameter:

erythema score

Basis:

mean

Time point:

other: 24 + 48 + 72 hours

Score:

0

Max. score:

4

Results 2

Irritation parameter:

edema score

Basis:

mean

Time point:

other: 24 + 48 + 72 hours

Score:

0

Max. score:

4

Irritant / corrosive response data:

Local signs (mean 1 hour to 72 hours) consisted of grade 0.0 erythema and grade 0.0 edema. In the area of application no staining of the treated skin by pigment or coloring of the test article was observed. No destructions or irreversible alterations of the treated skin were observed. No corrosive effect was evident on the skin.

Other effects:

The body weight gain of all rabbits was similar. No acute toxic symptoms were observed in the animals during the test period, and no mortality occurred. Due to the results obtained, no macroscopic organ examination was indicated.

Applicant's summary and conclusion

Interpretation of results:

not irritating

Remarks:

Migrated information