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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
skin sensitisation: in vivo (LLNA)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2007
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2007
Report date:
2007

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
GLP compliance:
yes (incl. QA statement)
Type of study:
mouse local lymph node assay (LLNA)

Test material

Constituent 1
Chemical structure
Reference substance name:
reaction mass of (2S,5R)-2-tert-butyl-5-methyl-2-propyl-2,5-dihydrofuran and (2S,5S)-2-tert-butyl-5-methyl-2-propyl-2,5-dihydrofuran
EC Number:
700-103-7
Molecular formula:
C12H22O
IUPAC Name:
reaction mass of (2S,5R)-2-tert-butyl-5-methyl-2-propyl-2,5-dihydrofuran and (2S,5S)-2-tert-butyl-5-methyl-2-propyl-2,5-dihydrofuran

In vivo test system

Test animals

Species:
mouse
Strain:
CBA
Sex:
female

Study design: in vivo (LLNA)

Vehicle:
acetone/olive oil (4:1 v/v)
Concentration:
25%, 50% and 100%
No. of animals per dose:
5

Results and discussion

In vivo (LLNA)

Resultsopen allclose all
Parameter:
SI
Remarks on result:
other: Test item: 0% S.I: 1.00 Test item: 25% S.I: 2.02 Test item: 50% S.I: 3.24 Test item: 100% S.I: 4.30
Parameter:
other: disintegrations per minute (DPM)
Remarks on result:
other: Test item: 0% DPM: 917.8 Test item: 25% DPM: 1854.9 Test item: 50% DPM: 2975.9 Test item: 100% DPM: 3947.6

Applicant's summary and conclusion

Interpretation of results:
sensitising
Remarks:
Migrated information Criteria used for interpretation of results: EU
Conclusions:
The test item was found to be a skin sensitiser and an EC3 value of 45.1% (w/v) was derived