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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
Study period:
23 Oct - 2 Nov 2007
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP - Guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2008
Report Date:
2008

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
Version / remarks:
adopted 2002
Deviations:
no
Qualifier:
according to
Guideline:
EU Method B.4 (Acute Toxicity: Dermal Irritation / Corrosion)
Version / remarks:
adopted 2004
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 870.2500 (Acute Dermal Irritation)
Version / remarks:
adopted Aug 1998
Deviations:
no
Qualifier:
according to
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

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
other: powder aggregated into lumps
Details on test material:
- Name of test material (as cited in study report): SPM-N
- Physical state: white lumps with powder
- Lot/batch No.: T-9314
- Expiration date of the lot/batch: 29 Aug 2008
- Storage condition of test material: at room temperature in the dark
- Other: pH 7.6-7.5 (1% in water, indicative range)

Test animals

Species:
rabbit
Strain:
New Zealand White
Details on test animals and environmental conditions:
TEST ANIMALS
- Source: Harlan, Horst, the Netherlands
- Age at study initiation: 8-10 weeks
- Weight at study initiation: 1.44-1.62 kg
- Housing: animals were housed individually in cages (56 cm x 44 cm x 37,5 cm) with perforated floors (Scanbur, Denmark)
- Diet: K-H pelleted diet for rabbits (SSNIFF Spezialdiäten GmbH, Soest, Germany), approximately 100 g/day. Hay (Technilab-BMI BV, Someren, the Netherlands) was provided at least 3 times/week.
- Water: tap water, ad libitum
- Acclimation period: at least 5 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 21.4-22.4
- Humidity (%): 45-61%
- Air changes (per hr): approximately 15
- Photoperiod (hrs dark / hrs light): 12/12

IN-LIFE DATES: From: 23 Oct 2007 To: 2 Nov 2007

Test system

Type of coverage:
semiocclusive
Preparation of test site:
clipped
Vehicle:
water
Controls:
other: untreated sites of the animals served as the control
Amount / concentration applied:
TEST MATERIAL
- Amount applied: 0.5 g

VEHICLE
- Amount applied: 0.5 mL
(0.5 g test substance was moistened with 0.5 mL vehicle before application)

The test material was ground to a powder using a pestle and mortar prior to weighing.
Duration of treatment / exposure:
4 h
Observation period:
72 h
Reading time points: 1, 24, 48 and 72 h
Number of animals:
3 males
Details on study design:
TEST SITE
- Area of exposure: approximately 6 cm² on the dorsal area
- Type of wrap if used: the test substance was applied to a metalline patch (2 cm x 3 cm), which was mounted on Micropore tape that was wrapped around the abdomen and secured with Coban elastic bandage

REMOVAL OF TEST SUBSTANCE
- Washing (if done): the residual test substance was removed from the skin using tap water
- Time after start of exposure: 4 h

SCORING SYSTEM: Draize scoring system

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
erythema score
Basis:
mean
Remarks:
out of all 3 animals
Time point:
other: mean over 24, 48 and 72 h
Score:
0
Max. score:
4
Reversibility:
other: reversibility not applicable
Irritation parameter:
edema score
Basis:
mean
Remarks:
out of all 3 animals
Time point:
other: mean over 24, 48 and 72 h
Score:
0
Max. score:
4
Reversibility:
other: reversibility not applicable
Irritant / corrosive response data:
No erythema or edema was recorded in any of the animals at any reading time point.
Other effects:
There was no mortality, no clinical signs were observed and the body weight was within the normal range during the study period.

Applicant's summary and conclusion

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