Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Adequacy of study:
other information

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: Annex V (Maximisation test)
GLP compliance:
yes

In vivo test system

Test animals

Species:
other: Guinea pig (Dunkin Hartley)

Study design: in vivo (non-LLNA)

Induction
Concentration / amount:
Concentration of test material and vehicle used at induction:
Intradermal induction:

2 % (w/w) in propylene glycol.



Topical induction

50 % (w/w) in propylene glycol.

Concentration of test material and vehicle used for each challenge:
50 % (w/w) in propylene glycol.
Challenge
Concentration / amount:
Concentration of test material and vehicle used at induction:
Intradermal induction:

2 % (w/w) in propylene glycol.



Topical induction

50 % (w/w) in propylene glycol.

Concentration of test material and vehicle used for each challenge:
50 % (w/w) in propylene glycol.
No. of animals per dose:
Number of animals in test group: 10
Number of animals in negative control group: 5

Results and discussion

In vivo (non-LLNA)

Resultsopen allclose all
Reading:
1st reading
Hours after challenge:
24
Group:
test chemical
Dose level:
50 %
No. with + reactions:
10
Total no. in group:
10
Remarks on result:
other: Reading: 1st reading. . Hours after challenge: 24.0. Group: test group. Dose level: 50 %. No with. + reactions: 10.0. Total no. in groups: 10.0.
Reading:
2nd reading
Hours after challenge:
48
Group:
test chemical
Dose level:
50 %
No. with + reactions:
10
Total no. in group:
10
Remarks on result:
other: Reading: 2nd reading. . Hours after challenge: 48.0. Group: test group. Dose level: 50 %. No with. + reactions: 10.0. Total no. in groups: 10.0.
Reading:
1st reading
Hours after challenge:
24
Group:
negative control
Dose level:
50 %
No. with + reactions:
0
Total no. in group:
5
Remarks on result:
other: Reading: 1st reading. . Hours after challenge: 24.0. Group: negative control. Dose level: 50 %. No with. + reactions: 0.0. Total no. in groups: 5.0.
Reading:
2nd reading
Hours after challenge:
48
Group:
negative control
Dose level:
50 %
No. with + reactions:
0
Total no. in group:
5
Remarks on result:
other: Reading: 2nd reading. . Hours after challenge: 48.0. Group: negative control. Dose level: 50 %. No with. + reactions: 0.0. Total no. in groups: 5.0.

Any other information on results incl. tables

Maximum concentration not causing irritating effects in preliminary test: 50 %

Signs of irritation during induction:
Intradermal induction:

Grade 2 erythema and necrosis of diameter 4-6 mm were noted
at the injection sites of the control animals. While
necrosis of diameter 1-8 mm and erythema grade 2 were noted
for all animals in the treatment group.


Topical induction:

Grade 1 erythema were found for the control, while grade 1-2
erythema with small scabs were found in the animals of the
treatment group.

Evidence of sensitisation of each challenge concentration:
10/10 (100% response)

Applicant's summary and conclusion

Interpretation of results:
other: irritant