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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicological information

Skin sensitisation

Currently viewing:

Administrative data

Endpoint:
skin sensitisation: in vivo (non-LLNA)
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed
Year:
1994
Report date:
1994

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 406 (Skin Sensitisation)
Version / remarks:
Maximised method, Magnusson and Kligman
GLP compliance:
yes
Type of study:
guinea pig maximisation test
Justification for non-LLNA method:
At the time of testing the LLNA method did not exhist

Test material

Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
401-310-2
EC Name:
-
Cas Number:
93912-64-2
Molecular formula:
Hill formula: C37H23N10O22S7Cl.6Na CAS formula: C37H23N10O22S7ClNa6
IUPAC Name:
Hexasodium 2-[8-amino-7-[[5-[[4-chloro-6-[[3-[[2-(sulfato)ethyl]sulfonyl]phenyl]amino]-1,3,5-triazin-2-yl] amino]-2 sulfonatophenyl]azo]-1-hydroxy-3,6-disulfonato-2-naphthalenyl]azo]-naphthalene-1,5-disulfonate
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder

In vivo test system

Test animals

Species:
guinea pig
Strain:
Hartley

Study design: in vivo (non-LLNA)

Inductionopen allclose all
Route:
intradermal
Vehicle:
water
Concentration / amount:
Material applied as 10% in water intradermally. Freunds complete adjuvant also applied intradermally.
Topical induction was with a 50% mixture in water following treatment with sodium lauryl sulphate.
Challengeopen allclose all
Route:
intradermal
Vehicle:
water
Concentration / amount:
Material applied as 10% in water intradermally. Freunds complete adjuvant also applied intradermally.
Topical induction was with a 50% mixture in water following treatment with sodium lauryl sulphate.
Challenge controls:
Concentrations of test material and vehicle used at each stage of challenge: 50% mixture in petrolatum.

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:
0
Total no. in group:
20
Remarks on result:
other: Reading: 1st reading. . Hours after challenge: 24.0. Group: test group. Dose level: 50%. No with. + reactions: 0.0. Total no. in groups: 20.0.
Reading:
1st reading
Hours after challenge:
48
Group:
test chemical
Dose level:
50%
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: 50%. No with. + reactions: 0.0. Total no. in groups: 20.0.
Reading:
1st reading
Hours after challenge:
24
Group:
negative control
Dose level:
50%
No. with + reactions:
0
Total no. in group:
20
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: 20.0.
Reading:
1st reading
Hours after challenge:
48
Group:
negative control
Dose level:
50%
No. with + reactions:
0
Total no. in group:
20
Remarks on result:
other: Reading: 1st reading. . Hours after challenge: 48.0. Group: negative control. Dose level: 50%. No with. + reactions: 0.0. Total no. in groups: 20.0.
Reading:
1st reading
Group:
positive control
Remarks on result:
not measured/tested

Any other information on results incl. tables

 

 

Number of animals showing skin reactions after

 

Challenge concentrations of test substance

1st challenge

24hr      48hr

2nd challenge

24hr      48hr

Test group

50

0

0

 

 

Negative control group

50

0

0

 

 

Applicant's summary and conclusion

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