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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: dermal
Type of information:
experimental study
Adequacy of study:
other information
Study period:
from June to July 1996
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: guideline study
Cross-reference
Reason / purpose for cross-reference:
reference to same study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1996
Report date:
1996

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 402 (Acute Dermal Toxicity)
Deviations:
yes
Remarks:
- 3 instead of 5 animals/sex used
Test type:
standard acute method
Limit test:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
(±)-13-ethyl-3-methoxygona-1,3,5(10),8-tetraen-17-one
EC Number:
227-699-7
EC Name:
(±)-13-ethyl-3-methoxygona-1,3,5(10),8-tetraen-17-one
Cas Number:
5941-92-4
Molecular formula:
C20H24O2
IUPAC Name:
13-ethyl-3-methoxy-6,7,11,12,13,14,15,16-octahydro-17H-cyclopenta[a]phenanthren-17-one (non-preferred name)
Test material form:
semi-solid (amorphous): gel
Remarks:
migrated information: paste

Test animals

Species:
rat
Strain:
other: HAN: WST (SPF)
Sex:
male/female

Administration / exposure

Type of coverage:
occlusive
Vehicle:
other: 900 mg NaCl ad 100 ml bidist. water
Duration of exposure:
24 hours
Doses:
2000 mg/kg bw
No. of animals per sex per dose:
3
Control animals:
no

Results and discussion

Effect levels
Sex:
male/female
Dose descriptor:
LD50
Effect level:
> 2 000 mg/kg bw
Based on:
test mat.

Any other information on results incl. tables

No animal died in the course of the study. A single dermal application of 2000 mg/kg was tolerated without compound-related findings. The body weight gain on days 7 and 14 was within the normal range for rats of this age and strain, which are routinely used in the laboratory. No compound- related clinical findings could be detected at the end of the study on day 14. Autopsy revealed no compound-related findings.

Applicant's summary and conclusion

Executive summary:

A single dermal administration of the test substance to male and female rats at the limit-dose 2000 mg/kg was tolerated without mortalities, compound-related clinical findings, effects on body weight gain and gross pathological findings. According to OECD TG 402 the dermal LD50 of the test substance is therefore > 2000 mg/kg body weight.