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Description of key information

The skin sensitization potential of3,4,5,6-tetrachloro-2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl) benzoic acid, aluminium salt (84473-86-9) was estimated by SSS (2017) using OECD QSAR toolbox v3.3 with log kow as the primary descriptor and considering the six closest read across substances3,4,5,6-tetrachloro-2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl)benzoic acid, aluminium salt was predicted to be not sensitizing to the skin of 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:
weight of evidence
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.
Reference:
Composition 0
Qualifier:
according to
Guideline:
other: As mentioned below
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
Test material information:
Composition 1
Specific details on test material used for the study:
- Name of test material : 3,4,5,6-tetrachloro-2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl)benzoic acid, aluminium salt
- Molecular formula : C20H4Br4Cl4O5.xAl
- Molecular weight : 2387.0295 g/mol
- Smiles notation : c1c2c(c(c(c1Br)O)Br)Oc3c(cc(c(c3Br)O)Br)C2c4c(c(c(c(c4Cl)Cl)Cl)Cl)C(=O)[O-].c1c2c(c(c(c1Br)O)Br)Oc3c(cc(c(c3Br)O)Br)C2c4c(c(c(c(c4Cl)Cl)Cl)Cl)C(=O)[O-].c1c2c(c(c(c1Br)O)Br)Oc3c(cc(c(c3Br)O)Br)C2c4c(c(c(c(c4Cl)Cl)Cl)Cl)C(=O)[O-].[Al+3]
- InChl: 1S/3C20H6Br4Cl4O5.Al/c3*21-5-1-3-7(8-9(20(31)32)13(26)15(28)14(27)12(8)25)4-2-6(22)17(30)11(24)19(4)33-18(3)10(23)16(5)29;/h3*1-2,7,29-30H,(H,31,32);/q;;;+3/p-3
- Substance type:Organic
- Physical state:Solid
Species:
guinea pig
Strain:
Dunkin-Hartley
Sex:
female
Details on test animals and environmental conditions:
No data available
No. of animals per dose:
10
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:
10
Clinical observations:
No skin sensitization reaction was noted
Remarks on result:
no indication of skin sensitisation
Remarks:
Not sensitizing

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 ( not "n") )  )  and "o" )  and "p" )  and ("q" and ( not "r") )  )  and ("s" and ( not "t") )  )  and ("u" and ( not "v") )  )  and ("w" and ( not "x") )  )  and "y" )  and "z" )  and ("aa" and ( not "ab") )  )  and ("ac" and "ad" )  )

Domain logical expression index: "a"

Referential boundary: The target chemical should be classified as Aluminum Compounds AND Not categorized by US-EPA New Chemical Categories

Domain logical expression index: "b"

Referential boundary: The target chemical should be classified as Aromatic perhalogencarbons OR Aryl OR Aryl halide OR Carboxylic acid OR Fused carbocyclic aromatic OR Fused saturated heterocycles OR No functional group found OR Phenol OR Xanthene by Organic Functional groups ONLY

Domain logical expression index: "c"

Referential boundary: The target chemical should be classified as Aromatic perhalogencarbons OR Aryl halide OR Carboxylic acid OR No functional group found OR Overlapping groups OR Phenol OR Xanthene by Organic Functional groups (nested) ONLY

Domain logical expression index: "d"

Referential boundary: The target chemical should be classified as Acid, aromatic attach [-COOH] OR Alcohol, olefinic attach [-OH] OR Aliphatic Carbon [CH] OR Aliphatic Carbon, two phenyl attach [-C-]  OR Aliphatic Oxygen, two aromatic attach [-O-] OR Aluminium [Al] OR Aromatic Carbon [C] OR Bromine, aromatic attach [-Br] OR Bromine, olefinic attach [-Br] OR Carbonyl, olefinic attach [-C(=O)-] OR Carbonyl, one aromatic attach [-C(=O)-] OR Chlorine, aromatic attach [-Cl] OR Chlorine, olefinic attach [-Cl] OR Hydroxy, aromatic attach [-OH] OR Miscellaneous sulfide (=S) or oxide (=O) OR Olefinic carbon [=CH- or =C<] OR Oxygen, one aromatic attach [-O-] OR Oxygen, two olefinic attach [-O-] OR Tertiary Carbon by Organic functional groups (US EPA) ONLY

Domain logical expression index: "e"

Referential boundary: The target chemical should be classified as Aromatic compound OR Aryl bromide OR Aryl chloride OR Aryl halide OR Carbonic acid derivative OR Carboxylic acid OR Carboxylic acid derivative OR Diarylether OR Ether OR Halogen derivative OR Heterocyclic compound OR Hydroxy compound OR No functional group found OR Phenol by Organic functional groups, Norbert Haider (checkmol) 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 >>  Michael-type addition, quinoid structures >> Quinones OR AN2 >> Carbamoylation after isocyanate formation OR AN2 >> Carbamoylation after isocyanate formation >> N-Hydroxylamines 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 AN2 >> Schiff base formation >> Dicarbonyl compounds OR AN2 >> Shiff base formation after aldehyde release OR AN2 >> Shiff base formation after aldehyde release >> Specific Acetate Esters OR AN2 >> Thioacylation via nucleophilic addition after cysteine-mediated thioketene formation OR AN2 >> Thioacylation via nucleophilic addition after cysteine-mediated thioketene formation >> Haloalkenes with Electron-Withdrawing Groups 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 >> Quinones OR Non-specific OR Non-specific >> Incorporation into DNA/RNA, due to structural analogy with  nucleoside bases    OR Non-specific >> Incorporation into DNA/RNA, due to structural analogy with  nucleoside bases    >> Specific Imine and Thione Derivatives OR Radical OR Radical >> Generation of reactive oxygen species OR Radical >> Generation of reactive oxygen species >> Thiols OR Radical >> Radical mechanism by ROS formation (indirect) or direct radical attack on DNA OR Radical >> Radical mechanism by ROS formation (indirect) or direct radical attack on DNA >> Organic Peroxy Compounds OR Radical >> Radical mechanism via ROS formation (indirect) OR Radical >> Radical mechanism via ROS formation (indirect) >> N-Hydroxylamines OR Radical >> Radical mechanism via ROS formation (indirect) >> Quinones OR Radical >> Radical mechanism via ROS formation (indirect) >> Specific Imine and Thione Derivatives 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 carbenium ion formation OR SN1 >> Nucleophilic attack after carbenium ion formation >> Specific Acetate Esters OR SN1 >> Nucleophilic attack after metabolic nitrenium ion formation OR SN1 >> Nucleophilic attack after metabolic nitrenium ion formation >> N-Hydroxylamines OR SN1 >> Nucleophilic substitution on diazonium ions OR SN1 >> Nucleophilic substitution on diazonium ions >> Specific Imine and Thione Derivatives OR SN2 OR SN2 >> Acylation OR SN2 >> Acylation >> Specific Acetate Esters OR SN2 >> Alkylation, direct acting epoxides and related OR SN2 >> Alkylation, direct acting epoxides and related >> Epoxides and Aziridines 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 >> Haloalkenes with Electron-Withdrawing Groups 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 >> Direct acylation involving a leaving group OR SN2 >> Direct acylation involving a leaving group >> Acyl Halides OR SN2 >> Nucleophilic substitution at sp3 Carbon atom OR SN2 >> Nucleophilic substitution at sp3 Carbon atom >> Specific Acetate Esters 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 Acylation OR Acylation >> P450 Mediated Activation to Isocyanates or Isothiocyanates OR Acylation >> P450 Mediated Activation to Isocyanates or Isothiocyanates >> Formamides OR Michael addition OR Michael addition >> P450 Mediated Activation of Heterocyclic Ring Systems OR Michael addition >> P450 Mediated Activation of Heterocyclic Ring Systems >> Furans 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 Michael addition >> Polarised Alkenes-Michael addition OR Michael addition >> Polarised Alkenes-Michael addition >> Alpha, beta- unsaturated amides OR Michael addition >> Polarised Alkenes-Michael addition >> Alpha, beta- unsaturated esters OR Michael addition >> Polarised Alkenes-Michael addition >> Alpha, beta- unsaturated ketones OR SN1 OR SN1 >> Iminium Ion Formation OR SN1 >> Iminium Ion Formation >> Aliphatic tertiary amines OR SN1 >> Nitrenium Ion formation OR SN1 >> Nitrenium Ion formation >> Aromatic azo OR SN1 >> Nitrenium Ion formation >> Unsaturated heterocyclic azo by DNA binding by OECD

Domain logical expression index: "j"

Referential boundary: The target chemical should be classified as No alert found AND SNAr AND SNAr >> Nucleophilic aromatic substitution on activated aryl and heteroaryl compounds AND SNAr >> Nucleophilic aromatic substitution on activated aryl and heteroaryl compounds >> Activated aryl and heteroaryl compounds by Protein binding by OASIS v1.3

Domain logical expression index: "k"

Referential boundary: The target chemical should be classified as Acylation OR Acylation >> Direct acylation involving a leaving group OR Acylation >> Direct acylation involving a leaving group >> (Thio)Acyl and (thio)carbamoyl halides and cyanides  OR Acylation >> Direct acylation involving a leaving group >> Anhydrides (sulphur analogues of anhydrides)  OR Acylation >> Direct acylation involving a leaving group >> Azlactones and unsaturated lactone derivatives  OR Acylation >> Ester aminolysis OR Acylation >> Ester aminolysis >> Amides OR Michael Addition OR Michael Addition >> Michael addition on conjugated systems with electron withdrawing group OR Michael Addition >> Michael addition on conjugated systems with electron withdrawing group >> alpha,beta-Carbonyl compounds with polarized double bonds  OR Michael Addition >> Michael addition on conjugated systems with electron withdrawing group >> Conjugated systems with electron withdrawing groups  OR Michael Addition >> Michael addition on conjugated systems with electron withdrawing group >> Cyanoalkenes OR Michael Addition >> Polarised Alkenes OR Michael Addition >> Polarised Alkenes >> Polarised Alkene - alkenyl pyridines, pyrazines, pyrimidines or triazines  OR Michael Addition >> Quinoide type compounds OR Michael Addition >> Quinoide type compounds >> Quinone methide(s)/imines; Quinoide oxime structure; Nitroquinones, Naphthoquinone(s)/imines  OR Nucleophilic addition OR Nucleophilic addition >> Addition to carbon-hetero double bonds OR Nucleophilic addition >> Addition to carbon-hetero double bonds >> Ketones OR Radical reactions OR Radical reactions >> Free radical formation OR Radical reactions >> Free radical formation >> Hydroperoxides OR Schiff base formation OR Schiff base formation >> Benzoyl Schiff base formation OR Schiff base formation >> Benzoyl Schiff base formation >> Benzoyl phosphine oxides  OR Schiff base formation >> Pyrazolones and Pyrazolidinones derivatives OR Schiff base formation >> Pyrazolones and Pyrazolidinones derivatives >> Pyrazolones and Pyrazolidinones  OR Schiff base formation >> Schiff base formation with carbonyl compounds OR Schiff base formation >> Schiff base formation with carbonyl compounds >> Aldehydes by Protein binding by OASIS v1.3

Domain logical expression index: "l"

Referential boundary: The target chemical should be classified as High (Class III) by Toxic hazard classification by Cramer (original) ONLY

Domain logical expression index: "m"

Referential boundary: The target chemical should be classified as No alert found by Protein binding alerts for Chromosomal aberration by OASIS v1.1

Domain logical expression index: "n"

Referential boundary: The target chemical should be classified as AN2 OR AN2 >> Michael-type addition to quinoid structures OR AN2 >> Michael-type addition to quinoid structures >> Phenols OR AN2 >> Nucleophilic addition to pyridonimine tautomer of aminopyridoindoles or aminopyridoimidazoles OR AN2 >> Nucleophilic addition to pyridonimine tautomer of aminopyridoindoles or aminopyridoimidazoles >> Heterocyclic Aromatic Amines OR Radical mechanism OR Radical mechanism >> ROS generation and direct attack of hydroxyl radical to the C8 position of nucleoside base OR Radical mechanism >> ROS generation and direct attack of hydroxyl radical to the C8 position of nucleoside base >> Heterocyclic Aromatic Amines OR SE reaction (CYP450-activated heterocyclic amines) OR SE reaction (CYP450-activated heterocyclic amines) >> Direct attack of arylnitrenium cation to the C8 position of nucleoside base OR SE reaction (CYP450-activated heterocyclic amines) >> Direct attack of arylnitrenium cation to the C8 position of nucleoside base >> Heterocyclic Aromatic Amines OR SR reaction (peroxidase-activated heterocyclic amines) OR SR reaction (peroxidase-activated heterocyclic amines) >> Direct attack of arylnitrenium radical to the C8 position of nucleoside base OR SR reaction (peroxidase-activated heterocyclic amines) >> Direct attack of arylnitrenium radical to the C8 position of nucleoside base >> Heterocyclic Aromatic Amines by Protein binding alerts for Chromosomal aberration by OASIS v1.1

Domain logical expression index: "o"

Referential boundary: The target chemical should be classified as Bioavailable AND Not bioavailable by Lipinski Rule Oasis ONLY

Domain logical expression index: "p"

Referential boundary: The target chemical should be classified as Aromatic perhalogencarbons AND Aryl AND Aryl halide AND Carboxylic acid AND Fused carbocyclic aromatic AND Fused saturated heterocycles AND No functional group found AND Phenol AND Xanthene by Organic Functional groups ONLY

Domain logical expression index: "q"

Referential boundary: The target chemical should be classified as Not categorized by Repeated dose (HESS)

Domain logical expression index: "r"

Referential boundary: The target chemical should be classified as Aliphatic nitriles (Hepatotoxicity) Rank B OR Chlorphentermine (Hepatotoxicity) Alert OR Halobenzenes (Hepatotoxicity) Rank A OR Halobenzenes (Renal toxicity) Rank A OR Nitrophenols/ Halophenols (Energy metabolism dysfuntion) Rank B OR Oxyphenistain (Hepatotoxicity) Alert OR Valproic acid (Hepatotoxicity) Alert by Repeated dose (HESS)

Domain logical expression index: "s"

Referential boundary: The target chemical should be classified as (!Undefined)Group All Lipid Solubility < 0.01 g/kg AND Exclusion rules not met AND Group All log Kow > 9 AND Group All Melting Point > 200 C AND Group CHal log Kow > 4.5 AND Group CHal Melting Point > 65 C AND Group CHal Molecular Weight > 280 g/mol AND Group CHal Molecular Weight > 370 g/mol by Skin irritation/corrosion Exclusion rules by BfR

Domain logical expression index: "t"

Referential boundary: The target chemical should be classified as Group All log Kow < -3.1 by Skin irritation/corrosion Exclusion rules by BfR

Domain logical expression index: "u"

Referential boundary: The target chemical should be classified as No alert found by Carcinogenicity (genotox and nongenotox) alerts by ISS

Domain logical expression index: "v"

Referential boundary: The target chemical should be classified as Metals, oxidative stress (Nongenotox) OR Structural alert for nongenotoxic carcinogenicity OR Substituted n-alkylcarboxylic acids (Nongenotox) by Carcinogenicity (genotox and nongenotox) alerts by ISS

Domain logical expression index: "w"

Referential boundary: The target chemical should be classified as Aromatic acid   [-C(=O)-OH] AND Aromatic alcohol  [-OH] AND Aromatic bromide   [-Br] AND Aromatic chloride   [-CL] AND Aromatic ether  [-O-aromatic carbon] AND Aromatic-CH AND Aromatic-H AND Not calculated by Biodegradation fragments (BioWIN MITI)

Domain logical expression index: "x"

Referential boundary: The target chemical should be classified as Aliphatic acid   [-C(=O)-OH] OR Aromatic-CH2 OR -CH2-  [linear] OR Fluorine  [-F] OR Methyl  [-CH3] OR Quaternary amine OR Tin  [Sn] by Biodegradation fragments (BioWIN MITI)

Domain logical expression index: "y"

Referential boundary: The target chemical should be classified as Mixture by Substance Type ONLY

Domain logical expression index: "z"

Referential boundary: The target chemical should be classified as Mixture by Substance Type ONLY

Domain logical expression index: "aa"

Referential boundary: The target chemical should be classified as Aluminum Compounds AND Not categorized by US-EPA New Chemical Categories

Domain logical expression index: "ab"

Referential boundary: The target chemical should be classified as Boron Compounds OR Lanthanides or Rare Earth Metals OR Nickel Compounds OR Phosphates, Inorganic OR Soluble complexes of Zinc by US-EPA New Chemical Categories

Domain logical expression index: "ac"

Parametric boundary:The target chemical should have a value of log Kow which is >= 2.23

Domain logical expression index: "ad"

Parametric boundary:The target chemical should have a value of log Kow which is <= 6.23

Interpretation of results:
other: Not sensitizing
Conclusions:
The skin sensitization potential of 3,4,5,6-tetrachloro-2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl)benzoic acid, aluminium salt (84473-86-9) was estimated by SSS (2017) using OECD QSAR toolbox v3.3 with log kow as the primary descriptor and considering the six closest read across substances 3,4,5,6-tetrachloro-2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl)benzoic acid, aluminium salt was predicted to be not sensitizing to the skin of female Dunkin-Hartley guinea pig.
Executive summary:

The skin sensitization potential of3,4,5,6-tetrachloro-2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl) benzoic acid, aluminium salt (84473-86-9) was estimated by SSS (2017) using OECD QSAR toolbox v3.3 with log kow as the primary descriptor and considering the six closest read across substances3,4,5,6-tetrachloro-2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl)benzoic acid, aluminium salt was predicted to be not sensitizing to the skin of female Dunkin-Hartley guinea pig.

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

Respiratory sensitisation

Endpoint conclusion
Endpoint conclusion:
no study available
Additional information:

Skin sensitisation

In different studies, 3,4,5,6-tetrachloro-2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl) benzoic acid, aluminium salt (84473-86-9) has been investigated for potential of skin sensitization to a greater or lesser extent. The studies are based on in vivo experiments in guinea pig for target chemical, 3,4,5,6-tetrachloro-2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl) benzoic acid, aluminium salt (84473-86-9) and its structurally similar read across substancesDiantimony Trioxide (1309-64-4) and vanadium trioxide (1314-34-7) the predicted data using the OECD QSAR toolbox has also been compared with the experimental data of read across.

The skin sensitization potential of 3,4,5,6-tetrachloro-2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl) benzoic acid, aluminium salt (84473-86-9) was estimated by SSS (2017) using OECD QSAR toolbox v3.3 with log kow as the primary descriptor and considering the six closest read across substances3,4,5,6-tetrachloro-2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl)benzoic acid, aluminium salt was predicted to be not sensitizing to the skin of female Dunkin-Hartley guinea pig.

Also it is further supported by experimental study conducted byEuropean Chemicals Agency (ECHA)(European Union Risk Assessment Report - Diantimony Trioxide, may 2008) to evaluate the skin sensitizing potential of read across substance Diantimony Trioxide (1309-64-4).The skin sensitization study of Diantimony Trioxide (1309-64-4) was performed by Magnusson and Kligman methodin20guinea pigs. An additional 10 animals served as the control group. A preliminary study with 8 animals was performed to determine the appropriate dose level for intracutaneous and topical administration. In induction phase,3 pairs of intradermal injections (0.1 ml each); 1) a 1:1 mixture (v/v) of Freund’s complete adjuvant (FCA):0.9 % NaCl. 2) 10 % suspension of diantimony trioxide in water and 3) a 1:1 mixture (v/v) of diantimony trioxide suspension: FCA/ 0.9 % NaCl resulting in a final concentration of diantimony trioxide of 10 % were given in shoulder region. After 6 day, the exposed skin was coated with 0.5 ml sodium lauryl sulphate 10 % in Vaseline in order to induce a local irritation then second induction using 50% concentration in water as suspension applied as patch for 48hr in same site as shoulder region.  In challenge phase, after 21 days on left flank region 50% suspension of test material in water was applied as patch for 24hr. After 21hr treated skin cleaned and evaluated for skin sensitization reaction. No indication of skin sensitization was observed. Hence it is considered that Diantimony Trioxide (1309-64-4) was not skin sensitizing in guinea pig by Magnusson and Kligman method.

Also it is further supported by experimental study conducted by US national Library of Medicine (HSDB (Hazardous Substances Data Bank); US national Library of Medicine reviewed by SRC, 2017) to evaluate the skin sensitizing potential of read across substance vanadium trioxide (1314-34-7). The vanadium trioxide (1314-34-7) was considered to be not sensitizing to guinea pig.

 Thus based on the above predictions on, 3,4,5,6-tetrachloro-2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl) benzoic acid, aluminium salt (84473-86-9) as well as its read across and applying weight of evidence, it can be concluded that , 3,4,5,6-tetrachloro-2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl) benzoic acid, aluminium salt (84473-86-9) is not a skin sensitizer. Thus comparing the above studies with the criteria of CLP regulation, , 3,4,5,6-tetrachloro-2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl) benzoic acid, aluminium salt (84473-86-9) can be considered as not classified for skin sensitization.

 

Justification for classification or non-classification

Thus comparing the above studies with the criteria of CLP regulation, , 3,4,5,6-tetrachloro-2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl) benzoic acid, aluminium salt (84473-86-9) can be considered as not classified for skin sensitization.