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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 (non-LLNA)
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP study according OECD / EU guideline

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2002

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 406 (Skin Sensitisation)
GLP compliance:
yes (incl. QA statement)
Type of study:
guinea pig maximisation test

Test material

Constituent 1
Chemical structure
Reference substance name:
ethyl 1-[2-(2,4-dichlorophenyl)acetoxy]cyclohexanecarboxylate
Cas Number:
361366-16-7
Molecular formula:
C17H20Cl2O4
IUPAC Name:
ethyl 1-[2-(2,4-dichlorophenyl)acetoxy]cyclohexanecarboxylate
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder

In vivo test system

Test animals

Species:
mouse
Strain:
other: Hsd Poc:DH
Sex:
female

Study design: in vivo (non-LLNA)

Inductionopen allclose all
Route:
intradermal and epicutaneous
Vehicle:
polyethylene glycol
Remarks:
400
Concentration / amount:
intradermal induction: 5%
topical induction: 50%
1st challenge: 50%
2nd challenge: 25%
Challengeopen allclose all
Route:
epicutaneous, semiocclusive
Vehicle:
polyethylene glycol
Remarks:
400
Concentration / amount:
intradermal induction: 5%
topical induction: 50%
1st challenge: 50%
2nd challenge: 25%
No. of animals per dose:
Test group: 20
Control group: 10

Results and discussion

In vivo (non-LLNA)

Resultsopen allclose all
Reading:
1st reading
Hours after challenge:
48
Group:
test chemical
Dose level:
50 %
No. with + reactions:
6
Total no. in group:
20
Remarks on result:
other: Reading: 1st reading. . Hours after challenge: 48.0. Group: test group. Dose level: 50 %. No with. + reactions: 6.0. Total no. in groups: 20.0.
Reading:
2nd reading
Hours after challenge:
72
Group:
test chemical
Dose level:
50 %
No. with + reactions:
5
Total no. in group:
20
Remarks on result:
other: Reading: 2nd reading. . Hours after challenge: 72.0. Group: test group. Dose level: 50 %. No with. + reactions: 5.0. Total no. in groups: 20.0.
Reading:
1st reading
Hours after challenge:
48
Group:
test chemical
Dose level:
25 %
No. with + reactions:
0
Total no. in group:
20
Remarks on result:
other: Reading: 1st reading. . Hours after challenge: 48.0. Group: test group. Dose level: 25 %. No with. + reactions: 0.0. Total no. in groups: 20.0.
Reading:
2nd reading
Hours after challenge:
72
Group:
test chemical
Dose level:
25 %
No. with + reactions:
0
Total no. in group:
20
Remarks on result:
other: Reading: 2nd reading. . Hours after challenge: 72.0. Group: test group. Dose level: 25 %. No with. + reactions: 0.0. Total no. in groups: 20.0.
Reading:
1st reading
Hours after challenge:
48
Group:
negative control
Dose level:
50 %
No. with + reactions:
5
Total no. in group:
10
Remarks on result:
other: Reading: 1st reading. . Hours after challenge: 48.0. Group: negative control. Dose level: 50 %. No with. + reactions: 5.0. Total no. in groups: 10.0.
Reading:
2nd reading
Hours after challenge:
72
Group:
negative control
Dose level:
50 %
No. with + reactions:
2
Total no. in group:
10
Remarks on result:
other: Reading: 2nd reading. . Hours after challenge: 72.0. Group: negative control. Dose level: 50 %. No with. + reactions: 2.0. Total no. in groups: 10.0.
Reading:
1st reading
Hours after challenge:
48
Group:
negative control
Dose level:
25 %
No. with + reactions:
0
Total no. in group:
10
Remarks on result:
other: Reading: 1st reading. . Hours after challenge: 48.0. Group: negative control. Dose level: 25 %. No with. + reactions: 0.0. Total no. in groups: 10.0.
Reading:
2nd reading
Hours after challenge:
72
Group:
negative control
Dose level:
25 %
No. with + reactions:
0
Total no. in group:
10
Remarks on result:
other: Reading: 2nd reading. . Hours after challenge: 72.0. Group: negative control. Dose level: 25 %. No with. + reactions: 0.0. Total no. in groups: 10.0.

Applicant's summary and conclusion

Interpretation of results:
not sensitising
Remarks:
Migrated information Criteria used for interpretation of results: EU