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EC number: 277-097-3 | CAS number: 72928-87-1
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Endpoint summary
Administrative data
Description of key information
The skin sensitization potential of target chemical Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen was assessedin various experimental studies which were conducted on guinea pigs and humans for target chemicalChromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen andits structurally similar read across substancesToluidine Red(CAS No: 2425-85-6) and Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen (CAS No: 72928-87-1). The predicted data usingQSAR toolboxhas also been compared with the experimental data.Based on the available data for the target and read across substances and applying the weight of evidence approach, it can be concluded that chemical Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen is unable to cause skin sensitization and thus can be considered as not sensitizing. Comparing the above annotations with the criteria of CLP regulation, it can be classified under the category “Not Classified”.
Key value for chemical safety assessment
Skin sensitisation
Link to relevant study records
- Endpoint:
- skin sensitisation: in vivo (non-LLNA)
- 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 version 3.4 and QMRF report has been attached
- Qualifier:
- according to guideline
- Guideline:
- other: estimated data
- Principles of method if other than guideline:
- Data is from OECD QSAR toolbox version 3.4 and QMRF report has been attached
- GLP compliance:
- not specified
- Type of study:
- guinea pig maximisation test
- Justification for non-LLNA method:
- not specified
- Specific details on test material used for the study:
- Name: Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo] -4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen
SMILES:Cc1cc(N(=O)=O)c(O)c(N=NC{-}2(.[Cr]{3+}3.C{-}4(C(C)=NN(c5cccc(S(N)(=O)=O)c5)C4=O)N=Nc4cc(CC(C)(C)C)cc(N(=O)=O)c4O{-}.3)C(C)=NN(c3ccccc3)C2=O)c1
InChI:1S/C21H23N6O6S.C17H14N5O4.Cr/c1-12-18(20(29)26(25-12)14-6-5-7-15(10-14)34(22,32)33)24-23-16-8-13(11-21(2,3)4)9-17(19(16)28)27(30)31;1-10-8-13(16(23)14(9-10)22(25)26)18-19-15-11(2)20-21(17(15)24)12-6-4-3-5-7-12;/h5-10,28H,11H2,1-4H3,(H2,22,32,33);3-9,23H,1-2H3;/q2*-1;+3/p-1/b24-23+;19-18+;
Molecular Formula: C38H35CrN11O10S.H
Molecular Weight: 890.831 g/mole - Species:
- guinea pig
- Strain:
- Dunkin-Hartley
- Sex:
- male/female
- Details on test animals and environmental conditions:
- No data available
- Route:
- intradermal and epicutaneous
- Vehicle:
- not specified
- Concentration / amount:
- No data available
- Day(s)/duration:
- No data available
- Adequacy of induction:
- not specified
- No.:
- #1
- Route:
- epicutaneous, occlusive
- Vehicle:
- not specified
- Concentration / amount:
- No data available
- Day(s)/duration:
- 48 hours
- Adequacy of challenge:
- not specified
- No. of animals per dose:
- 20
- Details on study design:
- No data available
- Reading:
- 1st reading
- Hours after challenge:
- 48
- Group:
- test chemical
- Dose level:
- No data available
- No. with + reactions:
- 0
- Total no. in group:
- 20
- Clinical observations:
- No skin sensitization was observed.
- Remarks on result:
- no indication of skin sensitisation
- Cellular proliferation data / Observations:
- No skin sensitization was observed.
- Interpretation of results:
- other: Not sensitizing
- Conclusions:
- The chemical Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen was estimated to be not sensitizing to the Dunkin-Hartley guinea pigs. Based on the estimated result Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen (CAS No: 72928-87-1) failed to induce skin sanitization effects and hence is considered to be not sensitizing to Dunkin-Hartley guinea pigs and can be classified under the category ˋ Not Classified’ as per CLP regulation.
- Executive summary:
The skin sensitization potential of Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen (CAS No: 72928-87-1) was estimated using OECD QSAR toolbox version 3.4 with log Pow as the primary descriptor. The chemical Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen was estimated to be not sensitizing to the Dunkin-Hartley guinea pigs. Based on the estimated result Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen (CAS No: 72928-87-1) failed to induce skin sanitization effects and hence is considered to be not sensitizing to Dunkin-Hartley guinea pigs and can be classified under the category ˋ Not Classified’ as per CLP regulation.
Reference
The
prediction was based on dataset comprised from the following
descriptors: "Skin Sensitisation"
Estimation method: Takes highest mode value from the 6 nearest neighbours
Domain logical expression:Result: In Domain
((((((("a"
or "b" or "c" or "d" )
and ("e"
and (
not "f")
)
)
and ("g"
and (
not "h")
)
)
and ("i"
and (
not "j")
)
)
and ("k"
and (
not "l")
)
)
and ("m"
and (
not "n")
)
)
and ("o"
and "p" )
)
Domain
logical expression index: "a"
Referential
boundary: The
target chemical should be classified as m,p - Cresols by OECD HPV
Chemical Categories
Domain
logical expression index: "b"
Referential
boundary: The
target chemical should be classified as Michael addition AND Michael
addition >> P450 Mediated Activation to Quinones and Quinone-type
Chemicals AND Michael addition >> P450 Mediated Activation to Quinones
and Quinone-type Chemicals >> Alkyl phenols AND SN1 AND SN1 >> Nitrenium
Ion formation AND SN1 >> Nitrenium Ion formation >> Aromatic azo AND SN1
>> Nitrenium Ion formation >> Aromatic nitro AND SN1 >> Nitrenium Ion
formation >> Unsaturated heterocyclic azo by DNA binding by OECD
Domain
logical expression index: "c"
Referential
boundary: The
target chemical should be classified as Acylation AND Acylation >>
Acylation involving an activated (glucuronidated) sulfonamide group AND
Acylation >> Acylation involving an activated (glucuronidated)
sulfonamide group >> Arenesulfonamides AND AN2 AND AN2 >> Michael
addition to activated double bonds in heterocyclic ring systems AND AN2
>> Michael addition to activated double bonds in heterocyclic ring
systems >> Pyrazolone and Pyrazolidine Derivatives AND AN2 >>
Nucleophilic addition at polarized N-functional double bond AND AN2 >>
Nucleophilic addition at polarized N-functional double bond >>
Arenesulfonamides AND AN2 >> Schiff base formation with carbonyl
compounds (AN2) AND AN2 >> Schiff base formation with carbonyl compounds
(AN2) >> Pyrazolone and Pyrazolidine Derivatives AND Schiff base
formation AND Schiff base formation >> Schiff base on pyrazolones and
pyrazolidinones AND Schiff base formation >> Schiff base on pyrazolones
and pyrazolidinones >> Pyrazolones and Pyrazolidinones by Protein
binding by OASIS v1.4
Domain
logical expression index: "d"
Referential
boundary: The
target chemical should be classified as Acylation AND Acylation >>
Direct Acylation Involving a Leaving group AND Acylation >> Direct
Acylation Involving a Leaving group >> Acetates by Protein binding by
OECD
Domain
logical expression index: "e"
Referential
boundary: The
target chemical should be classified as Michael addition AND Michael
addition >> P450 Mediated Activation to Quinones and Quinone-type
Chemicals AND Michael addition >> P450 Mediated Activation to Quinones
and Quinone-type Chemicals >> Alkyl phenols AND SN1 AND SN1 >> Nitrenium
Ion formation AND SN1 >> Nitrenium Ion formation >> Aromatic azo AND SN1
>> Nitrenium Ion formation >> Aromatic nitro AND SN1 >> Nitrenium Ion
formation >> Unsaturated heterocyclic azo by DNA binding by OECD
Domain
logical expression index: "f"
Referential
boundary: The
target chemical should be classified as 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 >> Arenes OR Michael addition >> P450 Mediated
Activation to Quinones and Quinone-type Chemicals >> Hydroquinones 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 No alert found OR Schiff
base formers OR Schiff base formers >> Chemicals Activated by P450 to
Glyoxal OR Schiff base formers >> Chemicals Activated by P450 to
Glyoxal >> Ethanolamines (including morpholine) OR SN1 >> Iminium Ion
Formation OR SN1 >> Iminium Ion Formation >> Aliphatic tertiary amines
OR SN1 >> Nitrenium Ion formation >> Primary (unsaturated) heterocyclic
amine OR SN1 >> Nitrenium Ion formation >> Primary aromatic amine OR SN1
>> Nitrenium Ion formation >> Secondary aromatic amine OR SN1 >>
Nitrenium Ion formation >> Tertiary aromatic amine by DNA binding by OECD
Domain
logical expression index: "g"
Referential
boundary: The
target chemical should be classified as Non binder, MW>500 by Estrogen
Receptor Binding
Domain
logical expression index: "h"
Referential
boundary: The
target chemical should be classified as Non binder, without OH or NH2
group OR Strong binder, OH group by Estrogen Receptor Binding
Domain
logical expression index: "i"
Referential
boundary: The
target chemical should be classified as Phenols by Skin
irritation/corrosion Inclusion rules by BfR
Domain
logical expression index: "j"
Referential
boundary: The
target chemical should be classified as Inclusion rules not met by Skin
irritation/corrosion Inclusion rules by BfR
Domain
logical expression index: "k"
Referential
boundary: The
target chemical should be classified as (!Undefined)Group All Lipid
Solubility < 0.01 g/kg AND Group All log Kow > 9 AND Group All Melting
Point > 200 C by Skin irritation/corrosion Exclusion rules by BfR
Domain
logical expression index: "l"
Referential
boundary: The
target chemical should be classified as Group CN Aqueous Solubility <
0.0001 g/L by Skin irritation/corrosion Exclusion rules by BfR
Domain
logical expression index: "m"
Referential
boundary: The
target chemical should be classified as (!Undefined)Group All Lipid
Solubility < 0.01 g/kg AND Group All log Kow > 9 AND Group All Melting
Point > 200 C by Skin irritation/corrosion Exclusion rules by BfR
Domain
logical expression index: "n"
Referential
boundary: The
target chemical should be classified as (!Undefined)Group CNHal Lipid
Solubility < 4 g/kg by Skin irritation/corrosion Exclusion rules by BfR
Domain
logical expression index: "o"
Parametric
boundary:The
target chemical should have a value of log Kow which is >= 6.08
Domain
logical expression index: "p"
Parametric
boundary:The
target chemical should have a value of log Kow which is <= 13.6
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (not sensitising)
- Additional information:
Skin sensitization:
Various studieshas been investigated for the test chemicalChromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen (CAS No: 72928-87-1)to observe the potential for skin sensitization to a greater or lesser extent. The studies are based on in vivo experiments in guinea pigs and humans for target chemicalChromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen (CAS No: 72928-87-1) and its structurally similar read across substanceToluidine Red(CAS No: 2425-85-6) and Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen (CAS No: 72928-87-1). The predicted data using the OECD QSAR toolbox has also been compared with the experimental data and summarized as below;
The skin sensitization potential of Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen was estimated using OECD QSAR toolbox version 3.3 with logPow as the primary descriptor. Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen was estimated to be not sensitizing to the skin of Dunkin-Hartley guinea pigs. Based on the estimated result Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen can be considered to be not sensitizing to Dunkin-Hartley guinea pigs.
The TAKEHITO KGZUKA et.al, {Contact Dermatitis; Volume 6; Pg. no. 330-336; 1980} conducted skin sensitization study in human patients suffering from pigmented contact dermatitis caused by the commercial Brilliant Lake Red R for read across substance Toluidine Red (CAS No: 2425-85-6) to detect its contact sensitivity. The patch of Toluidine Red was applied onto the back of each patient for 24 hours by using Finn Chambers® on Scanpor® (Epitest, Ltd. Oy) at a dose of 1% in petrolatum. After removal of patch, skin reactions were assessed according to the ICDRG classification for 2 days. Twenty-eight healthy female volunteers, aged 20 and 21, were also tested with the sample as controls. None gave a positive reaction. The negative skin sensitizing effects were observed in all treated patients. Thus the test chemical Toluidine Red (CAS No: 2425-85-6) was considered to be not sensitizing in human patients suffering from pigmented contact dermatitis caused by the commercial Brilliant Lake Red R.
This result were further supported by the experimental study performed by Thierbach MA et.al (Contact Dermatitis, 1992, 27, 22-26), for the structurally similar read across chemical,2-{2-[2 -chloro-4-(3-chloro-4-{2-[2-oxo-1-(phenylcarbamoyl)propyl]diazen-1-yl}phenyl)phenyl]diazen-1-yl}-3-oxo-N-phenylbutanamide (C.I. Pigment Yellow 12)[CAS: 6358-82-6]. A group of 32 patients with p-aminoazobenzene allergy were presumed that an increase in color printed newspapers might cause dermatitis. Patch tests were performed using the azo dyes in the printed papers along with specimens of the colored-printed newspaper. The test group consisted for 20 women and 12 men. 30 patients with an allergic contact dermatitis but negative to p-aminoazobenzene and PPD were also tested with the same patch test series. The dyes were kindly provided by the firms Hoechst and Ciba-Geigy. To avoid false-negative reactions, a test concentration of 2% in white petrolatum was chosen. Patch tests were performed using uniform patches and following Standard procedures. C.I. Pigment Yellow 12 did not elicit a positive patch test reaction in any of the 32 patients positive to p-aminoazobenzene, nor in the 30 control volunteers Hence, C.I Pigment Yellow 12 can be considered to be not sensitizing to skin.
Thus on the basis of available data for thetarget chemicalChromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen and its structurally similar read across substanceToluidine Red(CAS No: 2425-85-6) and Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen (CAS No: 72928-87-1),it can be concluded thatchemical Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen (CAS No: 72928-87-1) is unable to cause skin sensitization and considered as non-skin sensitizer. Comparing the above annotations with the criteria of CLP regulation, it can be classified under the category “Not Classified”.
Respiratory sensitisation
Endpoint conclusion
- Endpoint conclusion:
- no study available
Justification for classification or non-classification
The skin sensitization potential of test substance Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen (CAS No: 72928-87-1) and its structurally similar read across substanceits structurally similar read across substanceToluidine Red(CAS No: 2425-85-6) and Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen (CAS No: 72928-87-1) were observed in various studies. From the results obtained from these studies it is concluded that the chemical Chromate(1-), [2,4-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[4-[[5-(2,2-dimethylpropyl)-2-hydroxy-3-nitrophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonamidato(2-)]-, hydrogen (CAS No: 72928-87-1) is not likely to cause skin sensitization and hence can be classified as non-skin sensitizer.
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