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Administrative data

Endpoint:
acute toxicity: dermal
Type of information:
experimental study
Adequacy of study:
key study
Study period:
18 January - 01 February 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The study has been performed according to OECD and/or EC guidelines and according to GLP principles.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012
Report date:
2012

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 402 (Acute Dermal Toxicity)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method B.3 (Acute Toxicity (Dermal))
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 870.1200 (Acute Dermal Toxicity)
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: Japanese Ministry of Agriculture, Forestry and Fisheries (JMAFF), 12 Nousan, Notification No 8147, November 2000; including the most recent partial revisions.
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Test type:
standard acute method
Limit test:
yes

Test material

Constituent 1
Reference substance name:
FAT 40854/A TE
IUPAC Name:
FAT 40854/A TE
Details on test material:
- Name of test material (as cited in study report): FAT 40854/A TE
- Substance type: Reddish-brown powder
- Physical state:solid
- Purity: 46.2% (4 main constituents)
- Lot/batch No.: TZ 5719 / BOP 02-11
- Expiration date of the lot/batch: 01 April 2016
- Storage condition of test material: At room temperature in the dark
- Hygroscopic: Yes, store in well-sealed container
- Volatile: No
- pH: 5.4 at concentration of >80g/L
- Stability in Water: Stability for at least 6 hours at room temperature is confirmed over the concentration range 20-200 mg/mL, NOTOX Project 497840
- Solubility in Water: More than 80 g/L

Test animals

Species:
rat
Strain:
other: Wistar strain, Crl:WI (Han)
Sex:
male/female
Details on test animals or test system and environmental conditions:
- Source: Charles River Deutschland, Sulzfeld, Germany
- Age at study initiation: Young adult animals (approx. 10 weeks old)
- Weight at study initiation: Body weight variation was within +/- 20% of the sex mean.
- Housing: Individual housing in labeled Macrolon cages
- Diet: Free access to pelleted rodent diet (SM R/M-Z from SSNIFF® Spezialdiäten GmbH, Soest, Germany).
- Water: Free access to tap water.
- Acclimation period: At least 5 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 19.8 – 23.5ºC
- Humidity (%): 36 – 66%
- Air changes (per hr): approx 15
- Photoperiod (hrs dark / hrs light): 12/12

Deviations from the minimum level of relative humidity occurred. Laboratory historical data do not indicate an effect of the deviations.

IN-LIFE DATES: From: 18 January - 01 February 2012

Administration / exposure

Type of coverage:
occlusive
Details on dermal exposure:
One day before exposure (Day -1) an area of approximately 5x7 cm on the back of the animal was clipped.

The formulation was applied in an area of approx. 10% of the total body surface, i.e. approx. 25 cm² for males and 18 cm² for females. The formulation was held in contact with the skin with a dressing, consisting of a surgical gauze patch (Surgy 1D)*, successively covered with aluminum foil and Coban elastic bandage*. A piece of Micropore tape* was additionally used for fixation of the bandages in females only.
* Manufacturers: Laboratoires Stella s.a., Liege, Belgium (surgical gauze) and 3M, St. Paul, Minnesota, U.S.A. (Coban & Micropore).

Frequency: Single dosage, on Day 1.

Washing: Following application, dressings were removed and the skin cleaned of residual test substance using tap water.
Duration of exposure:
24 hours.
Doses:
2000 mg/kg

No. of animals per sex per dose:
5
Control animals:
no
Details on study design:
VEHICLE : wATER
- Justification for choice of vehicle: The vehicle was selected based on trial formulations performed at NOTOX and on test substance data supplied by the sponsor.

Dose volume: 2000 mg/kg (10 mL/kg) body weight.

DOSAGE PREPARATION: 2000 mg/kg (10 mL/kg) body weight.

Duration of observation period following administration: 14 days
- Frequency of observations and weighing:
Mortality/Viability: Twice daily.
Body weights: Days 1 (pre-administration), 8 and 15.
Clinical signs: At periodic intervals on the day of dosing (Day 1) and once daily thereafter, until Day 15.
- Necropsy of survivors performed: At the end of the observation period, all animals were sacrificed by oxygen/carbon dioxide procedure and subjected to necropsy. Descriptions of all internal macroscopic abnormalities were recorded.
- Other examinations performed: none.
Statistics:
None.

Results and discussion

Effect levels
Sex:
male/female
Dose descriptor:
LD50
Effect level:
> 2 000 mg/kg bw
Based on:
test mat.
Mortality:
No mortality occurred.
Clinical signs:
Chromodacryorrhoea, was noted in one male and two females on Day 1. Scales on the snout was noted in one male.
Redness, scales and/or scabs were seen in the treated skin-area of all animals during the observation period.
Body weight:
The changes noted in body weight gain in males and females were within the range expected for rats used in this type of study and were therefore considered not indicative of toxicity.
Gross pathology:
No abnormalities were found at macroscopic post mortem examination of the animals.

Applicant's summary and conclusion

Conclusions:
The dermal LD50 value of FAT 40854/A TE in Wistar rats was established to exceed 2000 mg/kg body weight.