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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: inhalation
Type of information:
experimental study
Adequacy of study:
key study
Study period:
May 5, 2006 - October 19, 2006
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2006
Report date:
2006

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 403 (Acute Inhalation Toxicity)
GLP compliance:
yes (incl. QA statement)
Test type:
acute toxic class method

Test material

Constituent 1
Chemical structure
Reference substance name:
2-methyl-4-oxo-3-(prop-2-en-1-yl)cyclopent-2-en-1-yl (1R)-2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropane-1-carboxylate
EC Number:
687-634-7
Cas Number:
231937-89-6
Molecular formula:
C19H26O3
IUPAC Name:
2-methyl-4-oxo-3-(prop-2-en-1-yl)cyclopent-2-en-1-yl (1R)-2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropane-1-carboxylate
Test material form:
liquid: viscous

Test animals

Species:
rat
Strain:
Wistar
Sex:
male/female

Administration / exposure

Route of administration:
inhalation: aerosol
Type of inhalation exposure:
whole body
Vehicle:
other: 80% glycol in water
Analytical verification of test atmosphere concentrations:
yes
Duration of exposure:
4 h
Concentrations:
5,767 mg/L
No. of animals per sex per dose:
5 male, 5 female
Control animals:
yes
Remarks:
5 male, 5 female

Results and discussion

Effect levels
Sex:
female
Dose descriptor:
LC50
Effect level:
> 5.767 mg/L air
Based on:
test mat.
Exp. duration:
4 h
Mortality:
10 %

Applicant's summary and conclusion

Interpretation of results:
Category 4 based on GHS criteria
Conclusions:
10% mortality occurred at the maximum achievable breathing zone concentration. The acute inhalation median lethal concentration of the test material was concluded to be greater than 5.767 mg/L.
However, based on the IPCS evaluation of allethrins (EHC 87, 1989), the inhalation toxicity values (LC50 values) were found to be > 1500 mg/m3 (in the mouse and rat), hence the self-classification is considered as Acute Tox. 4; H332.
Executive summary:

Two groups of rats were used for the study. Group I was exposed to glycol in water and serves as control group, while group II was exposed to the maximum achievable concentration of d-Allethrin in the glycol water solution. Rats from both groups were exposed for 4 hours followed by a 14 days observation period.