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Administrative data

Endpoint:
acute toxicity: dermal
Type of information:
experimental study
Adequacy of study:
key study
Study period:
27 Jan - 10 Feb 2000
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP-Guideline study.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2000
Report date:
2000

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EPA OPPTS 870.1200 (Acute Dermal Toxicity)
Deviations:
no
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
GLP compliance:
yes
Limit test:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
2-ethylhexyl benzoate
EC Number:
226-641-8
EC Name:
2-ethylhexyl benzoate
Cas Number:
5444-75-7
Molecular formula:
C15H22O2
IUPAC Name:
2-ethylhexyl benzoate
Details on test material:
- Name of test material (as cited in study report): 2-Ethylhexyl benzoate
- Physical state: clear colourless liquid
- Analytical purity: 99.734%
- Impurities (identity and concentrations): 2-Ethyl-4-methyl-1-pentyl benzoate 0.209%, C8 benzoate 0.023%, 2-Ethylhexyl phthalate 0.004%, unknown impurities 0.03%
- Lot/batch No.: 9915-140-2
- Expiration date of the lot/batch: 2000-12-04
- Storage condition of test material: room temperature in light, in brown glass bottle

Test animals

Species:
rat
Strain:
other: Hsd:Sprague-Dawley (CD)
Sex:
male/female
Details on test animals or test system and environmental conditions:
TEST ANIMALS
- Source: Harlan UK Ltd., Bicester, Oxon, UK
- Age at study initiation: 8-11 weeks
- Weight at study initiation: 222-265 g
- Housing: animals were housed individually in metal cages (RS Biotech Sub-Dividable Rodent Cages) until Day 5 when they were returned to group housing.
- Diet: standard laboratory rodent diet (Special Diet Services RM1(E) SQC expanded pellet), ad libitum
- Water: drinking water, ad libitum
- Acclimation period: 7 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 22 ± 3
- Humidity (%): 30-70
- Photoperiod (hrs dark / hrs light): 12/12

Administration / exposure

Type of coverage:
occlusive
Vehicle:
unchanged (no vehicle)
Details on dermal exposure:
TEST SITE
- Area of exposure: 5 x 5 cm clipped skin of the dorso-lumbar region
- % coverage: 10%
- Type of wrap if used: The test material was held in contact with the skin with porous gauze held in place with a non-irritating dressing, and further covered by a waterproof dressing encircled firmly around the trunk of the animal.

REMOVAL OF TEST SUBSTANCE
- Washing: the dressings were carefully removed and the treated area of skin was washed with warm water (30-40 °C). The treated area was blotted dry with absorbent paper.
- Time after start of exposure: 24 h

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 5.24 mL/kg bw (5004 mg/kg bw with a specific gravity of 0.955 g/mL)


Duration of exposure:
24 h
Doses:
5004 mg/kg bw
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: animals were checked at least twice daily for mortalities. Animals were observed for clinical signs soon after dosing and at frequent intervals for the remainder of Day 1 and thereafter, once in the morning and at the end of the experimental day. Body weight was recorded on Day 1, 8 and 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:
>= 5 000 mg/kg bw
Based on:
test mat.
Mortality:
No mortality occurred during the study period.
Clinical signs:
other: No systemic clinical signs of toxicity were observed up to the end of the 14-day observation period. Transient very slight dermal irritation (Grade 1 erythema with or without Grade 1 edema) was seen in all animals following removal of the dressing, resolv
Gross pathology:
Necropsy revealed no substance-related findings.

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
CLP: not classified