[No public or meaningful name is available]

Acute Toxicity: dermal

Administrative data

Endpoint:

acute toxicity: dermal

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experiment start date - 22 December 2004; Experiment completion date - 12 January 2005; Study completion date - 02 February 2005.

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2005

Report date:

2005

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 402 (Acute Dermal Toxicity)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method B.3 (Acute Toxicity (Dermal))

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Test type:

standard acute method

Limit test:

yes

Test material

Test material information

Constituent 1

Reference substance name:

FAT40819/A TE

IUPAC Name:

FAT40819/A TE

Test material form:

solid: particulate/powder

Remarks:

migrated information: powder

Details on test material:

- Name of test material (as cited in study report): FAT 40819/A
- Purity: Approx. 77%
- Lot/batch No.: Red ROE 420 BOP 01/04
- Expiration date: 2 November 2009
- Stability of test item: Stable under storage conditions
- Stability of test item dilution: Stable in polyethylene glycol for at least 7 days at room temperature.
- Storage conditions: At room temperature (range of 20 ± 5 °C), light and moisture (dessiccator) protected.

Specific details on test material used for the study:

Identity: FAT 40819/A
Description: Red brown powder
Batch number: Red ROE 420 BOP 01/04
Purity: approx. 77 %
Stability of test item: Stable under storage condition
Expiry date: 02 November 2009
Stability of test item dilution: Stable in PEG 300 for at least 7 days at room temperature
Storage conditions: At room temperature.

Test animals

Species:

rat

Strain:

Wistar

Sex:

male/female

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: RCC Ltd, Laboratory Animal Services, CH-4414 Füllinsdorf / Switzerland
- Age when treated: males: 8 weeks, females: 12 weeks
- Housing: During acclimatization in groups of five per sex in Makrolon type-4 cages with standard softwood bedding. lndividually in Makrolon type-3 cages with standard softwood bedding ('Lignocel', Schill AG, CH-4132 Muttenz) during treatment and observation.
- Diet: Pelleted standard Provimi Kliba 3433 rat/mouse maintenance diet, batch no. 42/04 (Provimi Kliba AG, CH-4303 Kaiseraugst/Switzerland), ad libitum,
- Water: Community tap water from Füllinsdorf, ad libitum.
- Acclimation period: Under laboratory conditions, after health examination. Only animals without any visual signs of illness were used for the study.

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 22 ± 3
- Humidity (%): 30 - 70
- Air changes (per hr): 10 - 15
- Photoperiod (hrs dark / hrs light): 12/12

Administration / exposure

Type of coverage:

semiocclusive

Vehicle:

polyethylene glycol

Remarks:

PEG 300

Details on dermal exposure:

One day before treatment, the backs of the animals were clipped with an electric clipper, exposing an area of approximately 10% of the total body surface. Only those animals without injury or irritation on the skin were used in the test. On test day 1, the test item was applied at a dose of 2000 mg/kg body weight evenly on the intact skin with a syringe and covered with a semi-occlusive dressing. The dressing was wrapped around the abdomen and fixed with an elastic adhesive bandage.

Application volume/kg body weight: 4 mL.
24 hours after the application the dressing was removed and the skin was flushed with lukewarm tap water and dried with disposable paper towels. Thereafter, the reaction sites were assessed. The fur of all animals was shaved on test day 9 just after the assessment of the reaction to facilitate the skin reading for the next day.

Duration of exposure:

24 hours

Doses:

2000 mg/kg body weight

No. of animals per sex per dose:

5

Control animals:

no

Details on study design:

- Duration of observation period following administration: 14 days
- Frequency of observations and weighing:
Mortality/Viability: Daily during the acclimatization period, at approximately 1, 2, 3 and 5 hours after administration on test day 1 (with the clinical signs) and twice daily during days 2-15.
Body weights: On test days 1 (prior to administration), 8 and 15.
Clinical signs: Daily during the acclimatization period and at approximately 1, 2, 3 and 5 hours after administration on test day 1. Once daily during days 2-15.
- Necropsy of survivors performed: Macroscopic examinations were performed. No organs or tissues were retained.

Statistics:

No statistical analysis was used.

Results and discussion

Effect levels

Sex:

male/female

Dose descriptor:

LD50

Effect level:

> 2 000 mg/kg bw

Based on:

test mat.

Mortality:

No deaths occurred during the study.

Clinical signs:

other: Ruffled fur was noted at the 3-hour reading in three male animals and was persistent up to the 5-hour reading in two animals. Red discoloration of the treated skin area produced by the test item prevent the assessment of a possible erythema in all male an

Gross pathology:

No macroscopic findings were observed at necropsy.

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

The toxicity of the test substance is greater than 2000 mg/kg bw.

Executive summary:

In a GLP-compliant dermal toxicity study, performed according to OECD guideline 402, Wistar rats (5/sex) were treated with the test substance (2000 mg/kg bw) by dermal application. The test substance was diluted in vehicle (polyethylene glycol), administered on the skin with a syringe and covered with a semi-occlusive dressing for 24 hours. After 24 hours the dressing was removed and the skin was flushed with lukewarm tap water. A 14-day observation period followed. No deaths occurred during the study and the body weight of the animals was within the range commonly recorded for this strain and age. No macroscopic findings were observed. Ruffled fur was noted at the 3-hour reading in three male animals and was persistent up to the 5-hour reading in two animals. Red discoloration of the treated skin area produced by the test item prevent the assessment of a possible erythema in all male animals on test days 2-4 and again on test days 7 to 13, or test days 9 or 10 to the end of the observation period. Slight crusts were noted on test days 2 to 5, 8 or 15. Red discoloration of the treated skin area produced by the test item prevent the assessment of a possible erythema in all female animals on test days 2- 4 and again from test day 6, 9 or 12 to the end of the observation period. Slight crusts were noted on test days 2 or 4 to 6, 8, 9 or 15. Based on the observations, the toxicity of the test substance is greater than 2000 mg/kg bw.