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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
sensitisation data (humans)
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions

Data source

Reference
Reference Type:
publication
Title:
Erratum to Monograph ''Valencene''
Author:
Letizia, C.S., Cocchiara, J., Wellington, G.A., Funk, C. and Api, A.M.
Year:
2001
Bibliographic source:
[Food and Chemical Toxicology 38 Supplement 3 (2000) S235-S236]. Food and Chemical Toxicology, 7(39), p.757.

Materials and methods

Type of sensitisation studied:
skin
Study type:
study with volunteers
Test guideline
Guideline:
other: Maximization test
GLP compliance:
not specified

Test material

1
Chemical structure
Reference substance name:
[1R-(1α,7β,8α)]-1,2,3,5,6,7,8,8a-octahydro-1,8a-dimethyl-7-(1-methylvinyl)naphthalene
EC Number:
225-047-6
EC Name:
[1R-(1α,7β,8α)]-1,2,3,5,6,7,8,8a-octahydro-1,8a-dimethyl-7-(1-methylvinyl)naphthalene
Cas Number:
4630-07-3
Molecular formula:
C15H24
IUPAC Name:
3-isopropenyl-4a,5-dimethyl-1,2,3,4,4a,5,6,7-octahydronaphthalene

Method

Type of population:
general
Ethical approval:
not specified
Subjects:
25 healthy male volunteers
Route of administration:
dermal
Details on study design:
Application of 5% valencene in petrolatum under occlusion to the same site on the forearms of all subjects for five alternate-day 48-hr periods. Patch sites were pretreated for 24 hours with 5% aqueous sodium lauryl sulfate (SLS) under occlusion for the initial patch only. Following a 10- to 14-day rest period, challenge patches were applied under occlusion to fresh sites for 48-hours. Challenge applications were preceded by 30-minute applications of 5% aqueous SLS under occlusion on the left side whereas the test material was applied without SLS treatment on the right side.

Results and discussion

Results of examinations:
No reactions were produced that were considered significantly irritant or allergic.

Applicant's summary and conclusion