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Toxicological information

Acute Toxicity: dermal

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Administrative data

Endpoint:
acute toxicity: dermal
Type of information:
migrated information: read-across based on grouping of substances (category approach)
Adequacy of study:
weight of evidence
Study period:
16 Dec - 30 Dec 2009
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
GLP - Guideline study. According to the ECHA guidance document "Practical guide 6: How to report read-across and categories (March 2010)", the reliability was changed from RL1 to RL2 to reflect the fact that this study was conducted on a read-across substance.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report Date:
2010

Materials and methods

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

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material (as cited in study report): only trade name given
- Physical state: light yellow transparent oily liquid
- Analytical purity: 100%
- Lot/batch No.: H113021
- Expiration date of the lot/batch: 05 November 2010 (allocated by the testing laboratory, 1 year after receipt of the test substance)
- Storage condition of test material: room temperature, dark

Test animals

Species:
rat
Strain:
other: Wistar Crl:WI (Han) (outbred, SPF-Quality)
Sex:
male/female
Details on test animals and environmental conditions:
TEST ANIMALS
- Source: Charles River Deutschland, Sulzfeld, Germany
- Age at study initiation: approx. 10 weeks
- Weight at study initiation: 277 - 304 g (males) and 184 - 202 g (females)
- Housing: individually housed in labelled Macrolon cages (Mlll type) containing sterilised sawdust as bedding material (Litalabo, S.P.P.S., Argenteuil, France) and paper as cage-enrichment (Enviro-dri, Wm. Lillico & Son (Nonham Mill Ltd), Surrey, UK).
- Diet: pelleted rodent diet (SM R/M-Z from SSNlFF® Spezialdiäten GmbH, Soest, Germany), ad libitum
- Water: tap water, ad libitum
- Acclimation period: at least 5 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 21.0 ± 3.0
- Humidity (%): 40-70
- Air changes (per hr): 15
- Photoperiod (hrs dark / hrs light): 12/12

Administration / exposure

Type of coverage:
occlusive
Vehicle:
polyethylene glycol
Details on dermal exposure:
TEST SITE
- Area of exposure: approx. 25 cm² on the dorsal area (males) and 18 cm² (females), respectively
- % coverage: 10%
- Type of wrap if used: dressing consisting of a surgical gauze patch (Surgy 1D, Laboratoires Stella sa., Liege, Belgium), successively covered with aluminum foil and Coban elastic bandage (3M, St. Paul, MN, USA.). A piece of Micropore tape (3M, St. Paul, MN, USA) was additionally used for fixation of the bandages in females only.

REMOVAL OF TEST SUBSTANCE
- Washing (if done): residual test substance was removed with tap water.
- Time after start of exposure: 24 h

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 10 mL/kg bw
- Concentration (if solution): 200 mg/mL
Duration of exposure:
24 h
Doses:
2000 mg/kg bw
No. of animals per sex per dose:
5
Control animals:
not required
Details on study design:
- Duration of observation period following administration: 14 days
- Frequency of observations and weighing: animals were observed twice daily for mortality and viability, and individual body weights were determined at Day 1 (pre-administration), 8 and 15; clinical signs were determined at periodic intervals on the day of dosing (Day 1) and once daily thereafter, until Day 15.
- Necropsy of survivors performed: yes
- Other examinations performed: clinical signs, body weight

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 during the study period.
Clinical signs:
Flat posture was noted among all animals on Day 1. Chromodacryorrhoea was observed in 3/5 males and in 2/5 females on Day 1. Ptosis was determined in 2/5 males and in 4/5 females. 3/5 females showed restless behaviour on Day 1. Scales and scabs of the right flank and/or treated skin were observed among a 3/5 males and one female between Days 4 and 15.
Body weight:
Body weight gains of all dose groups were within the normal ranges in males and females during the whole study period.
Gross pathology:
Necropsy revealed no substance-related findings.

Applicant's summary and conclusion

Interpretation of results:
not classified
Remarks:
Migrated information Criteria used for interpretation of results: EU
Conclusions:
CLP: not classified
DSD: not classified