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Description of key information

The skin sensitization potential of Dialuminium tris(4-hydroxy-3-((4-sulphonato-1-naphthyl)azo)naphthalenesulphonate) (84041-67-8) was estimated by SSS (2017) using OECD QSAR toolbox v3.3 with log kow as the primary descriptor and considering the five closest read across substances Dialuminium tris(4-hydroxy-3-((4-sulphonato-1-naphthyl)azo)naphthalenesulphonate) (84041-67-8) was predicted to be not sensitizing to the skin of male and female Dunkin-Hartley guinea pig.

Key value for chemical safety assessment

Skin sensitisation

Link to relevant study records
Reference
Endpoint:
skin sensitisation
Remarks:
in vivo
Type of information:
(Q)SAR
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with limited documentation / justification
Justification for type of information:
Data is from OECD QSAR toolbox v3.3 and the QMRF report has been attached.
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 406 (Skin Sensitisation)
Principles of method if other than guideline:
Prediction was done using OECD QSAR toolbox v3.3,2017
GLP compliance:
not specified
Type of study:
guinea pig maximisation test
Justification for non-LLNA method:
No data available
Specific details on test material used for the study:
- Name of the test material: Dialuminium tris(4-hydroxy-3-((4-sulphonato-1-naphthyl)azo)naphthalenesulphonate)
- IUPAC name: dialuminium tris[4-hydroxy-3-[(4-sulphonato-1-naphthyl)azo]naphthalenesulphonate]
- Molecular formula: C20H14N2O7S22/3Al
- Molecular weight: 1423.3254 g/mol
- Substance type: Organic
- Smiles: c1cc2c(ccc(c2cc1)S(=O)(=O)[O-])/N=N/c3c(c4c(c(c3)S(=O)(=O)[O-])cccc4)O.c1cc2c(ccc(c2cc1)S(=O)(=O)[O-])/N=N/c3c(c4c(c(c3)S(=O)(=O)[O-])cccc4)O.c1cc2c(ccc(c2cc1)S(=O)(=O)[O-])/N=N/c3c(c4c(c(c3)S(=O)(=O)[O-])cccc4)O.[Al+3].[Al+3]
Species:
guinea pig
Strain:
Dunkin-Hartley
Sex:
male/female
Details on test animals and environmental conditions:
No data available
No. of animals per dose:
Total:40
test group:20
Control group :20
Details on study design:
No data available
Challenge controls:
No data available
Positive control substance(s):
not specified
Statistics:
No data available
Positive control results:
No data available
Reading:
1st reading
Group:
test group
No. with + reactions:
0
Total no. in group:
20
Clinical observations:
No skin sensitization reaction was observed
Remarks on result:
no indication of skin sensitisation

The prediction was based on dataset comprised from the following descriptors: "Skin Sensitisation"
Estimation method: Takes highest mode value from the 7 nearest neighbours
Domain  logical expression:Result: In Domain

((((((("a" or "b" or "c" or "d" or "e" )  and ("f" and ( not "g") )  )  and ("h" and ( not "i") )  )  and ("j" and ( not "k") )  )  and "l" )  and "m" )  and ("n" and "o" )  )

Domain logical expression index: "a"

Referential boundary: The target chemical should be classified as Naphthalene sulfonic acids, condensates by OECD HPV Chemical Categories

Domain logical expression index: "b"

Referential boundary: The target chemical should be classified as Aromatic compound OR Azo compound OR Hydroxy compound OR Phenol OR Sulfonic acid OR Sulfonic acid derivative by Organic functional groups, Norbert Haider (checkmol) ONLY

Domain logical expression index: "c"

Referential boundary: The target chemical should be classified as Alcohol, olefinic attach [-OH] OR Aliphatic Nitrogen, one aromatic attach [-N] OR Aromatic Carbon [C] OR Azo [-N=N-] OR Hydroxy, aromatic attach [-OH] OR Hydroxy, sulfur attach [-OH] OR Miscellaneous sulfide (=S) or oxide (=O) OR Olefinic carbon [=CH- or =C<] OR Oxygen, one aromatic attach [-O-] OR Suflur {v+4} or {v+6} OR Sulfinic acid [-S(=O)OH] OR Sulfonate, aromatic attach [-SO2-O] by Organic functional groups (US EPA) ONLY

Domain logical expression index: "d"

Referential boundary: The target chemical should be classified as Azo OR Fused carbocyclic aromatic OR Overlapping groups OR Phenol OR Sulfonic acid by Organic Functional groups (nested) ONLY

Domain logical expression index: "e"

Referential boundary: The target chemical should be classified as Aryl OR Azo OR Fused carbocyclic aromatic OR Naphtalene OR Phenol OR Sulfonic acid by Organic Functional groups ONLY

Domain logical expression index: "f"

Referential boundary: The target chemical should be classified as No alert found by DNA binding by OASIS v.1.3

Domain logical expression index: "g"

Referential boundary: The target chemical should be classified as AN2 OR AN2 >>  Michael-type addition, quinoid structures OR AN2 >>  Michael-type addition, quinoid structures >> Quinoneimines OR AN2 >> Nucleophilic addition to alpha, beta-unsaturated carbonyl compounds OR AN2 >> Nucleophilic addition to alpha, beta-unsaturated carbonyl compounds >> alpha, beta-Unsaturated Aldehydes OR AN2 >> Schiff base formation OR AN2 >> Schiff base formation >> alpha, beta-Unsaturated Aldehydes OR Michael addition OR Michael addition >> Quinone type compounds OR Michael addition >> Quinone type compounds >> Quinone methides OR Non-covalent interaction OR Non-covalent interaction >> DNA intercalation OR Non-covalent interaction >> DNA intercalation >> DNA Intercalators with Carboxamide Side Chain OR Non-covalent interaction >> DNA intercalation >> Fused-Ring Primary Aromatic Amines OR Radical OR Radical >> Radical mechanism via ROS formation (indirect) OR Radical >> Radical mechanism via ROS formation (indirect) >> Fused-Ring Primary Aromatic Amines OR Radical >> Radical mechanism via ROS formation (indirect) >> Single-Ring Substituted Primary Aromatic Amines OR Radical >> ROS formation after GSH depletion OR Radical >> ROS formation after GSH depletion (indirect) OR Radical >> ROS formation after GSH depletion (indirect) >> Quinoneimines OR Radical >> ROS formation after GSH depletion >> Quinone methides OR SN1 OR SN1 >> Alkylation after metabolically formed carbenium ion species OR SN1 >> Alkylation after metabolically formed carbenium ion species >> Polycyclic Aromatic Hydrocarbon Derivatives OR SN1 >> Nucleophilic attack after metabolic nitrenium ion formation OR SN1 >> Nucleophilic attack after metabolic nitrenium ion formation >> Fused-Ring Primary Aromatic Amines OR SN1 >> Nucleophilic attack after metabolic nitrenium ion formation >> Single-Ring Substituted Primary Aromatic Amines OR SN2 OR SN2 >> Alkylation, direct acting epoxides and related after P450-mediated metabolic activation OR SN2 >> Alkylation, direct acting epoxides and related after P450-mediated metabolic activation >> Polycyclic Aromatic Hydrocarbon Derivatives OR SN2 >> Direct acting epoxides formed after metabolic activation OR SN2 >> Direct acting epoxides formed after metabolic activation >> Quinoline Derivatives OR SN2 >> SN2 at an activated carbon atom OR SN2 >> SN2 at an activated carbon atom >> Quinoline Derivatives by DNA binding by OASIS v.1.3

Domain logical expression index: "h"

Referential boundary: The target chemical should be classified as No alert found by DNA binding by OECD

Domain logical expression index: "i"

Referential boundary: The target chemical should be classified as Michael addition OR Michael addition >> P450 Mediated Activation to Quinones and Quinone-type Chemicals OR Michael addition >> P450 Mediated Activation to Quinones and Quinone-type Chemicals >> Alkyl phenols OR Michael addition >> P450 Mediated Activation to Quinones and Quinone-type Chemicals >> Arenes OR Michael addition >> P450 Mediated Activation to Quinones and Quinone-type Chemicals >> Hydroquinones OR Michael addition >> P450 Mediated Activation to Quinones and Quinone-type Chemicals >> Polycyclic (PAHs) and heterocyclic (HACs) aromatic hydrocarbons-Michael addition OR SN1 OR SN1 >> Nitrenium Ion formation OR SN1 >> Nitrenium Ion formation >> Aromatic azo OR SN1 >> Nitrenium Ion formation >> Primary aromatic amine by DNA binding by OECD

Domain logical expression index: "j"

Referential boundary: The target chemical should be classified as Non binder, impaired OH or NH2 group by Estrogen Receptor Binding

Domain logical expression index: "k"

Referential boundary: The target chemical should be classified as Moderate binder, NH2 group OR Moderate binder, OH grooup OR Non binder, MW>500 OR Non binder, non cyclic structure OR Non binder, without OH or NH2 group OR Strong binder, NH2 group OR Strong binder, OH group OR Very strong binder, OH group OR Weak binder, OH group by Estrogen Receptor Binding

Domain logical expression index: "l"

Referential boundary: The target chemical should be classified as Bioavailable by Lipinski Rule Oasis ONLY

Domain logical expression index: "m"

Similarity boundary:Target: Oc1c2ccccc2c(S(O)(=O)=O)cc1N=Nc1ccc(S(O)(=O)=O)c2ccccc12
Threshold=20%,
Dice(Atom centered fragments)
Atom type; Count H attached; Hybridization

Domain logical expression index: "n"

Parametric boundary:The target chemical should have a value of log Kow which is >= -0.385

Domain logical expression index: "o"

Parametric boundary:The target chemical should have a value of log Kow which is <= 4.48

Interpretation of results:
other: Negative
Conclusions:
The skin sensitization potential of Dialuminium tris(4-hydroxy-3-((4-sulphonato-1-naphthyl)azo)naphthalenesulphonate) (84041-67-8) was estimated by SSS (2017) using OECD QSAR toolbox v3.3 with log kow as the primary descriptor and considering the five closest read across substances Dialuminium tris(4-hydroxy-3-((4-sulphonato-1-naphthyl)azo)naphthalenesulphonate) (84041-67-8) was predicted to be not sensitizing to the skin of male and female Dunkin-Hartley guinea pig.
Executive summary:

The skin sensitization potential ofDialuminium tris(4-hydroxy-3-((4-sulphonato-1-naphthyl)azo)naphthalenesulphonate) (84041-67-8)was estimated by SSS (2017) using OECD QSAR toolbox v3.3 with log kow as the primary descriptor and considering the five closest read across substancesDialuminium tris(4-hydroxy-3-((4-sulphonato-1-naphthyl)azo)naphthalenesulphonate) (84041-67-8)was predicted to be not sensitizing to the skin of male and female Dunkin-Hartley guinea pig.

Endpoint conclusion
Endpoint conclusion:
no adverse effect observed (not sensitising)
Additional information:

Skin sensitization 

In different studies, Dialuminium tris(4-hydroxy-3-((4-sulphonato-1-naphthyl)azo)naphthalenesulphonate) (84041-67-8) has been investigated for potential of skin sensitization to a greater or lesser extent. The studies are based on in vivo experiments inguinea pig for target chemical, Dialuminium tris(4-hydroxy-3-((4-sulphonato-1-naphthyl)azo)naphthalenesulphonate) (84041-67-8) and its structurally similar read across substancesmelamine (108-78-1)and FD and C Red 4(4548-53-2)the predicted data using the OECD QSAR toolbox has also been compared with the experimental data of read across.

The skin sensitization potential of Dialuminium tris(4-hydroxy-3-((4-sulphonato-1-naphthyl)azo)naphthalenesulphonate) (84041-67-8) was estimated by SSS (2017) using OECD QSAR toolbox v3.3 with log kow as the primary descriptor and considering the five closest read across substances Dialuminium tris(4-hydroxy-3-((4-sulphonato-1-naphthyl)azo)naphthalenesulphonate) (84041-67-8) was predicted to be not sensitizing to the skin of male and female Dunkin-Hartley guinea pig.

The experimental study conducted byInstitute for Arbeitsschutz der Deutschen Gesetzlichen Unfallversicherung (IFA) GESTIS-database on hazardous substance(IFA GESTIS, 2016)to evaluate the skin sensitizing potential of read across substancemelamine (108-78-1).In Guinea pig maximization test melamine (108-78-1) not produce any skin sensitization reaction on guinea pig so melamine was consider as not skin sensitizing in guinea pig.

The experimental study conducted by Directorate-General Environment, Consumer Protection and Nuclear Safety (Commission of the European Communities reports of the Scientific Committee on Cosmetology (seventh series), 1988)to evaluate the skin sensitizing potential of read across substance FD and C Red 4(4548-53-2). Kligman maximisation test was conducted on chemical FD and C Red 4(4548-53-2).25 healthy adults were exposed to concentration up to 0.3% (0.3 gm) in petrolatum and applied under occlusion for 48-hrs was negative. Hence, Non-sensitising effects was considered in Kligman maximisation test of chemical FD and C Red 4 exposed to 25 human adults for 48-hrs.

 

Thus based on the above predictions on Dialuminium tris(4-hydroxy-3-((4-sulphonato-1-naphthyl)azo)naphthalenesulphonate) (84041-67-8) as well as its read across and applying weight of evidence, it can be concluded that Dialuminium tris(4-hydroxy-3-((4-sulphonato-1-naphthyl)azo)naphthalenesulphonate) (84041-67-8) is not a skin sensitizer.

Thus comparing the above studies with the criteria of CLP regulation, Dialuminium tris(4-hydroxy-3-((4-sulphonato-1-naphthyl)azo)naphthalenesulphonate) (84041-67-8)can be considered as not classified for skin sensitization.

Respiratory sensitisation

Endpoint conclusion
Endpoint conclusion:
no study available

Justification for classification or non-classification

Thus comparing the above studies with the criteria of CLP regulation, Dialuminiumtris(4-hydroxy-3-((4-sulphonato-1-naphthyl)azo)naphthalenesulphonate) (84041-67-8) can be considered as not classified for skin sensitization.