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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
acute toxicity: oral
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Between 08 and 23 November, 2011
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
GLP study conducted in compliance with OECD Guideline No. 423 without any deviation. The substance is adequately identified, but details on composition are missing. Therefore validation applies with restrictions.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2011
Report date:
2011

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 423 (Acute Oral toxicity - Acute Toxic Class Method)
Version / remarks:
17 December 2001.
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method B.1 tris (Acute Oral Toxicity - Acute Toxic Class Method)
Version / remarks:
regulation No. 440/2008
Deviations:
no
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. QA statement)
Remarks:
Inspected on 2010-12-07 / Signed on 2011-03-07.
Test type:
acute toxic class method
Limit test:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
2-benzyl-4-methyl-octahydro-1,3-benzodioxine
EC Number:
956-606-9
Cas Number:
1373821-23-8
Molecular formula:
C16 H22 O2
IUPAC Name:
2-benzyl-4-methyl-octahydro-1,3-benzodioxine
Test material form:
liquid
Details on test material:
- Physical state: colourless liquid.
- Storage condition of test material: fridge 6°C±3°C, dark
Specific details on test material used for the study:
Date received: 20 October 2011

Test animals

Species:
rat
Strain:
Sprague-Dawley
Sex:
female
Details on test animals or test system and environmental conditions:
TEST ANIMALS
- Source: Elevage JANVIER (53940 Le Genest St Isle, France)
- Age at study initiation: 8 - 9 weeks
- Weight at study initiation: 186 - 223 g
- Housing: housed by group of three in solid-bottomed clear polycarbonate cages with a stainless steel mesh lid.
- Diet: foodstuff (M20, SDS), ad libitum but food was removed at D-1 and then redistributed 4 hours after the test item administration.
- Water: tap-water, ad libitum
- Acclimation period: 5 days

ENVIRONMENTAL CONDITIONS
- Temperature: 19-25 °C
- Humidity: 30-70%
- Air changes: approximately fifteen changes per hour.
- Photoperiod: 12 h light/12 h darkness.

IN-LIFE DATES: From 08 to 23 November, 2011.

Administration / exposure

Route of administration:
oral: gavage
Vehicle:
unchanged (no vehicle)
Details on oral exposure:
MAXIMUM DOSE VOLUME APPLIED: 1.93 mL/kg bw

ADMINISTRATION OF TEST ITEM:
Animals received an effective dose of 2000 mg/kg bw of the test item, administered by gavage under a volume of 1.93 mL/kg bw using a suitable syringe graduated fitted with an oesophageal metal canula.
Doses:
2000 mg/kg bw
No. of animals per sex per dose:
6 females
Control animals:
no
Details on study design:
- Duration of observation period following administration: 14 days
- Frequency of observations and weighing: Animals were observed 30 min, 1, 3 and 4 hours after test item administration and thereafter once daily for 14 days. Animals were weighed pretest (Day 0) and on Day 2, 7 and 14.
- Necropsy of survivors performed: Yes; Animals were killed on Day 14 and subjected to macroscopic examination.
Statistics:
None

Results and discussion

Preliminary study:
Not applicable
Effect levelsopen allclose all
Key result
Sex:
female
Dose descriptor:
LD50
Effect level:
> 2 000 mg/kg bw
Based on:
test mat.
Remarks on result:
other: No mortality occurred during the study.
Key result
Sex:
female
Dose descriptor:
LD50 cut-off
Effect level:
> 5 000 mg/kg bw
Based on:
test mat.
Mortality:
No mortality occurred during the study.
Clinical signs:
other: On the first day of the test, a decrease in spontaneous activity (2/6) was noted. The animals recovered a normal activity at 24-hours post dose.
Gross pathology:
The macroscopical examination of the animals at the end of the study did not reveal treatment-related changes.
Other findings:
None

Any other information on results incl. tables

None

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
Under the test conditions, the oral LD50 for test substance is higher than 2000 mg/kg bw and the LD50 cut-off may be considered to be higher than 5000 mg/kg body in female rats. Therefore, the substance is not classified according to the annex I of the Regulation EC No. 1272/2008 (CLP) and to the GHS.
Executive summary:

In an acute oral toxicity study (limit test) performed according to OECD Guideline 423 and in compliance with GLP, 6 female Sprague Dawley rats were given a single oral (gavage) dose of test item at 2000 mg/kg bw. Animals were then observed for mortality, clinical signs and bodyweights for 14 days and were all sacrificed for macroscopic examination.

 

No mortality occurred during the study. No significant clinical signs related to the administration of the test item were observed. The body weight evolution of the animals remained normal throughout the study, similar between treated and control animals. The macroscopical examination of the animals at the end of the study did not reveal treatment-related changes.

 

Oral LD50 Female > 2000 mg/kg bw

Under the test conditions, the oral LD50 for test substance is higher than 2000 mg/kg bw and the LD50 cut-off may be considered to be higher than 5000 mg/kg body in female rats. Therefore, the substance is not classified according to the annex I of the Regulation EC No. 1272/2008 (CLP) and to the GHS.

This study is considered as acceptable and satisfies the requirement for acute oral toxicity endpoint.