2,6-dimethyl-4-(2,2,3-trimethylcyclopent-3-en-1-yl)cyclohex-2-en-1-ol

Acute Toxicity: oral

Administrative data

Endpoint:

acute toxicity: oral

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 24 January to 8 February 2012.

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 some data on composition is missing. Therefore validation applies with restrictions.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2012

Report date:

2012

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 423 (Acute Oral toxicity - Acute Toxic Class Method)

Version / remarks:

17 December 2001.

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method B.1 tris (Acute Oral Toxicity - Acute Toxic Class Method)

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

Test material information

Constituent 1

Reference substance name:

2,6-dimethyl-4-(2,2,3-trimethylcyclopent-3-en-1-yl)cyclohex-2-en-1-ol

Cas Number:

1401065-88-0

Molecular formula:

C16 H26 O

IUPAC Name:

2,6-dimethyl-4-(2,2,3-trimethylcyclopent-3-en-1-yl)cyclohex-2-en-1-ol

Test material form:

other: See specific details on each Endpoint Study Records

Details on test material:

- Storage condition of test material: Room temperature

Specific details on test material used for the study:

- Physical state: Colourless gel
- Date received: 13 January 2012

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 weeks
- Weight at study initiation: 183 - 211 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: between ten and fifteen changes per hour.
- Photoperiod: 12 h light/12 h darkness.

IN-LIFE DATES: From 24 January to 8 February 2012.

Administration / exposure

Route of administration:

oral: gavage

Vehicle:

unchanged (no vehicle)

Details on oral exposure:

MAXIMUM DOSE VOLUME APPLIED: 2.08 mL/kg bw

ADMINISTRATION OF TEST ITEM:
Animals received an effective dose of 2000 mg/kg bw of the test item, administered by force-feeding under a volume of 2.08 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 levels

Key result

Sex:

female

Dose descriptor:

LD50

Effect level:

> 2 000 mg/kg bw

Based on:

test mat.

Mortality:

No mortality occurred during the study.

Clinical signs:

other: Mydriasis (6/6) was noted during the first hours of the test. No clinical signs related to the administration of the test item were observed from 24 hours post dose.

Gross pathology:

The macroscopical examination of the animals at the end of the study revealed the presence of a white thickening forestomach (2/6).

Other findings:

None

Any other information on results incl. tables

None

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

Oral LD50 Female > 2000 mg/kg bw. Under the test conditions, the test material is not classified according to the annex I of the Regulation (EC) No. 1272/2008 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 undiluted 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. Mydriasis (6/6) was noted during the first hours of the test. The animals recovered a normal behaviour at 24 hours post-dose. 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 revealed the presence of a white thickening forestomach (2/6).

 

Oral LD50 Female > 2000 mg/kg bw

Under the test conditions, the test material is not classified according to the annex I of the Regulation (EC) No. 1272/2008 and to the GHS.

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