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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Remarks:
in vivo
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Data is from modelling database developed by the National Food Institute, Technical University of Denmark.

Data source

Reference
Reference Type:
other: Authoritative data base
Title:
Danish QSAR study for CAS No.:
Author:
Danish (Q)SAR Database
Year:
2016
Bibliographic source:
Database developed by National Food Institute, Technical University of Denmark, with support from the Danish Environmental Protection Agency, the Nordic Council of Ministers and the European Chemicals Agency.

Materials and methods

Principles of method if other than guideline:
The predicton is done using Danish (Q)SAR Database
GLP compliance:
no
Type of study:
other: Allergic contact dermatitis (ACD) in guinea pig and human

Test material

Constituent 1
Chemical structure
Reference substance name:
[8-[(p-aminophenyl)azo]-7-hydroxy-2-naphthyl]trimethylammonium chloride
EC Number:
247-640-9
EC Name:
[8-[(p-aminophenyl)azo]-7-hydroxy-2-naphthyl]trimethylammonium chloride
Cas Number:
26381-41-9
Molecular formula:
C19H21N4O.Cl
IUPAC Name:
8-[(4-aminophenyl)diazenyl]-7-hydroxy-N,N,N-trimethylnaphthalen-2-aminium chloride
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
- Name of test material (as cited in study report): [8-[(p-aminophenyl)azo]-7-hydroxy-2-naphthyl]trimethylammonium chloride- Molecular formula (if other than submission substance): C19-H21-N4-O.Cl - Molecular weight (if other than submission substance): 356.855- Smiles notation (if other than submission substance): c1(\N=N\c2ccc(cc2)N)c2cc([N+](C)(C)C)ccc2ccc1O.[ClH-]- Substance type: Organic - Physical state: Solid

In vivo test system

Test animals

Species:
other: guinea pig and human
Strain:
not specified
Sex:
not specified

Study design: in vivo (non-LLNA)

Induction
Route:
other: no data
Vehicle:
no data
Challenge
Route:
other: no data
Vehicle:
no data

Results and discussion

In vivo (non-LLNA)

Results
Group:
test chemical
Clinical observations:
Allergic Contact Dermatitis in Guinea Pig and Human give positive result
Remarks on result:
other: Group: test group. Clinical observations: Allergic Contact Dermatitis in Guinea Pig and Human give positive result.

Any other information on results incl. tables

Allergic Contact Dermatitis in Guinea Pig and Human give positive result

Applicant's summary and conclusion

Interpretation of results:
sensitising
Remarks:
Migrated informationCriteria used for interpretation of results: EU
Conclusions:
Based on the QSAR prediction done using the Danish (Q)SAR Database, the skin sensitization was estimated to be positive on guinea pig and human. Thus it can be concluded that the substance [8-[(p-aminophenyl)azo]-7-hydroxy-2-naphthyl]trimethylammonium chloride has positive skin sensitization effects and based on the CLP criteria for classification it can be classified as skin sensitizer.
Executive summary:

Based on the QSAR prediction done using the Danish (Q)SAR Database, the skin sensitization was estimated to be positive on guinea pig and human. Thus it can be concluded that the substance[8-[(p-aminophenyl)azo]-7-hydroxy-2-naphthyl]trimethylammonium chloridehas positive skin sensitization effects and based on the CLP criteria for classification it can be classified as skin sensitizer.