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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
Not reported
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Information from migrated NONS file, as per inquiry number 06-2120030080-80-0000 permission to refer granted by ECHA.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1986
Report date:
1986

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method B.1 (Acute Toxicity (Oral))
Version / remarks:
Reported as "Annex V"
GLP compliance:
yes
Test type:
standard acute method
Limit test:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
400-820-2
EC Name:
-
Cas Number:
84268-33-7
Molecular formula:
C20H23N3O3
IUPAC Name:
methyl 3-[3-(2H-1,2,3-benzotriazol-2-yl)-5-tert-butyl-4-hydroxyphenyl]propanoate

Test animals

Species:
rat
Strain:
not specified
Sex:
male/female

Administration / exposure

Route of administration:
oral: unspecified
Vehicle:
other: Distilled water containing 0.5% carboxymethylcellulose and 0.1% polysorbate 80
Doses:
no data
No. of animals per sex per dose:
5
Control animals:
not specified

Results and discussion

Effect levels
Sex:
male/female
Dose descriptor:
LD50
Effect level:
> 5 000 mg/kg bw
Based on:
not specified
Mortality:
There were no unscheduled deaths during the study.
Clinical signs:
other: Signs of sedation, exophthalmus, fuffled fur and curved body posture were noted during the study. These effects were all considered to be of slight severity and occured from 1 hour post dosing to day 10.
Gross pathology:
No treatment-related gross pathological effects were noted

Any other information on results incl. tables

None of the animals died during the study. Clinical signs observed during the study included: sedation, dyspnoea, exophthalmus, ruffled fur and curved body posture. These signs were slight in their severity and occurred from 1 hour post-dosing to day 10.

There were no effects on the organs and no treatment-related gross pathological effects were noted.

Applicant's summary and conclusion

Interpretation of results:
not classified
Remarks:
Migrated information Criteria used for interpretation of results: EU
Conclusions:
The acute oral median lethal dose (LD50) of the substance in the male and female rat was determined to be greater than 5000 mg/kg bodyweight.
Executive summary:

In an acute oral toxicity test performed using the standard acute method (method B1 of Annex V), under the conditions of GLP, the acute oral median lethal dose (LD50) of the substance in the male and female rat was determined to be greater than 5000 mg/kg bodyweight. Signs of sedation, exophthalmus, fuffled fur and curved body posture were noted during the study. These effects were all considered to be of slight severity and occured from 1 hour post dosing to day 10 but no gorss pathological efects were noted.