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Diss Factsheets

Toxicological information

Acute Toxicity: dermal

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Administrative data

Endpoint:
acute toxicity: dermal
Type of information:
experimental study
Adequacy of study:
key study
Study period:
16 February 2010 to 02 March 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
The study has been performed according to OECD and/or EC guidelines and according to GLP principles.
Cross-reference
Reason / purpose for cross-reference:
reference to same study
Reference
Endpoint:
acute toxicity: dermal
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Justification for type of information:
See attached justification
Reason / purpose for cross-reference:
read-across source
Key result
Sex:
male/female
Dose descriptor:
LD50
Effect level:
> 2 000 mg/kg bw
Based on:
test mat.
Mortality:
No mortality occurred.
Clinical signs:
other: General/maculate erythema, thickening, yellow staining, scales and/or scabs were noted in the treated skin area of all animals during the observation period. General tremors, hunched posture, shallow respiration, piloerection, ptosis and/or chromodacryo
Gross pathology:
No abnormalities were found at macroscopic post mortem examination of the animals .

For all details on the properties of the source material, the description of the analogue approach justification and the data matrix, see the attached document

Interpretation of results:
other:
Remarks:
CLP criteria not met.
Conclusions:
The results obtained with the substance Blown linseed oil are suitable for the regulatory purpose of REACH for the substance Blown rapeseed oil: LD50 dermal (rat): >2000 mg/kg body weight.

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
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:
68649-95-6
Cas Number:
68649-95-6
IUPAC Name:
68649-95-6
Constituent 2
Reference substance name:
Linseed oil, oxidized
EC Number:
272-038-8
EC Name:
Linseed oil, oxidized
IUPAC Name:
272-038-8
Constituent 3
Reference substance name:
Oxidation products of seed oil obtained from Linum usitatissimum, Linaceae (linseed)
IUPAC Name:
Oxidation products of seed oil obtained from Linum usitatissimum, Linaceae (linseed)
Constituent 4
Reference substance name:
Linseed oil, oxidized
IUPAC Name:
Linseed oil, oxidized
Details on test material:
- Name of test material (as cited in study report): Blown linseed oil
- Substance type: Hazy yellow to brown liquid
- Physical state: Liquid
- Analytical purity: treated as 100% pure (also an UVCB)
- Stability under test conditions: Stable
- Storage condition of test material: At room temperature in the dark
- See attached document for more information

Test animals

Species:
rat
Strain:
other: Wistar strain, Crl:WI (Han)
Sex:
male/female
Details on test animals or test system and environmental conditions:
TEST ANIMALS
- Source: Charles River Deutschland, Sulzfeld, Germany.
- Age at study initiation: Young adult animals (approx. 10 weeks old) were selected
- Weight at study initiation: Body weight variation did not exceed +/- 20% of the sex mean.
- Fasting period before study: no
- Housing: Individually housed in labeled Macrolon cages (MIII type, height 18 cm.) containing sterilized sawdust as bedding material (Litalabo, S.P.P.S., Argenteuil, France) and paper as cage-enrichment (Enviro-dri, Wm. Lillico & Son (Wonham Mill Ltd), Surrey, United Kingdom). During the acclimatization period the animals were group housed in Macrolon cages (MIV type).
- Diet (e.g. ad libitum): Free access to pelleted rodent diet (SM R/M-Z from SSNIFF® Spezialdiäten GmbH, Soest, Germany).
- Water (e.g. ad libitum): Free access to tap water.
- Acclimation period: Acclimatization period was at least 5 days before start of treatment under laboratory conditions.
- Health inspection: A health inspection was performed prior to commencement of treatment, to ensure that the animals were in a good state of health. Special attention was paid to the skin to be treated, which was intact and free from any abnormality.

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20.0 - 22.0ºC
- Humidity (%): 40 - 56%
- Air changes (per hr): approximately 15 air changes per hour
- Photoperiod (hrs dark / hrs light): 12 hours artificial fluorescent light and 12 hours darkness per day.

IN-LIFE DATES: From: 16 February 2010 To: 02 March 2010

Administration / exposure

Type of coverage:
occlusive
Vehicle:
unchanged (no vehicle)
Details on dermal exposure:
TEST SITE
The test substance 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 test substance 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.

REMOVAL OF TEST SUBSTANCE
After 24 hours of application, dressings were removed and the skin cleaned of residual test substance using tap water.

TEST MATERIAL
- Amount(s) applied (volume or weight with unit):2000 mg/kg (2.105 mL/kg) body weight. Dose volume calculated as dose level (g/kg) / density (g/mL).

Duration of exposure:
24 hours
Doses:
2000 mg/kg (2.105 mL/kg) body weight.
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:
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: yes, 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.

Statistics:
Not Applicable.

Results and discussion

Effect levels
Key result
Sex:
male/female
Dose descriptor:
LD50
Effect level:
> 2 000 mg/kg bw
Based on:
test mat.
Mortality:
No mortality occurred.
Clinical signs:
other: General/maculate erythema, thickening, yellow staining, scales and/or scabs were noted in the treated skin area of all animals during the observation period. General tremors, hunched posture, shallow respiration, piloerection, ptosis and/or chromodacryo
Gross pathology:
No abnormalities were found at macroscopic post mortem examination of the animals .

Any other information on results incl. tables

For all details on the properties of the source material, the description of the analogue approach justification and the data matrix, see the attached document

Applicant's summary and conclusion

Interpretation of results:
other:
Remarks:
CLP criteria not met.
Conclusions:
The results obtained with the substance Blown linseed oil are suitable for the regulatory purpose of REACH for the substance Blown rapeseed oil: LD50 dermal (rat): >2000 mg/kg body weight.