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EC number: 271-946-1 | CAS number: 68647-35-8 This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 42535:4.
- 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 Benzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) was assessedin various experimental studies which were conducted on guinea pigs for target chemicalBenzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) andits structurally similar read across substancesBasic Violet 1 (CAS no: 8004-87-3)and (4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride {Basic Violet 14 (CAS No: 632-99-5)}. 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 Benzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) 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:
- Prediction is done using QSAR Toolbox version 3.4
- 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 of test material : Benzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates
- Substance type: Organic
- Physical state: Solid - Species:
- guinea pig
- Strain:
- Dunkin-Hartley
- Sex:
- not specified
- 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:
- 72 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:
- 72
- 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 sensitising
- Conclusions:
- The chemical Benzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) was estimated to be not sensitizing to the Dunkin-Hartley guinea pigs. Based on the estimated result Benzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) failed to induce skin sanitization effects and hence is considered to be not sensitizing to Dunkin-Hartley guinea pigs.
- Executive summary:
The skin sensitization potential of Benzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) was estimated using OECD QSAR toolbox version 3.4 with log Pow as the primary descriptor. The chemical Benzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) was estimated to be not sensitizing to the Dunkin-Hartley guinea pigs. Based on the estimated result Benzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) 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 mode value from the 5 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 (
not "p")
)
)
and "q" )
and "r" )
and ("s"
and (
not "t")
)
)
and ("u"
and (
not "v")
)
)
and ("w"
and "x" )
)
Domain
logical expression index: "a"
Referential
boundary: The
target chemical should be classified as Phosphates, Inorganic by US-EPA
New Chemical Categories
Domain
logical expression index: "b"
Referential
boundary: The
target chemical should be classified as SN1 AND SN1 >> Nitrenium Ion
formation AND SN1 >> Nitrenium Ion formation >> Tertiary aromatic amine
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) ester group AND
Acylation >> Acylation involving an activated (glucuronidated) ester
group >> Arenecarboxylic Acid Esters by Protein binding by OASIS v1.4
Domain
logical expression index: "d"
Referential
boundary: The
target chemical should be classified as Inorganic Compound by Aquatic
toxicity classification by ECOSAR
Domain
logical expression index: "e"
Referential
boundary: The
target chemical should be classified as No alert found by DNA binding by
OASIS v.1.4
Domain
logical expression index: "f"
Referential
boundary: The
target chemical should be classified as AN2 OR AN2 >> Carbamoylation
after isocyanate formation OR AN2 >> Carbamoylation after isocyanate
formation >> N-Hydroxylamines OR AN2 >> Schiff base formation by
aldehyde formed after metabolic activation OR AN2 >> Schiff base
formation by aldehyde formed after metabolic activation >> Geminal
Polyhaloalkane Derivatives OR Non-covalent interaction OR Non-covalent
interaction >> DNA intercalation OR Non-covalent interaction >> DNA
intercalation >> DNA Intercalators with Carboxamide and Aminoalkylamine
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) >> Geminal
Polyhaloalkane Derivatives OR Radical >> Radical mechanism via ROS
formation (indirect) >> N-Hydroxylamines OR Radical >> Radical mechanism
via ROS formation (indirect) >> Nitro Azoarenes OR Radical >> Radical
mechanism via ROS formation (indirect) >> Single-Ring Substituted
Primary Aromatic Amines OR SN1 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 nitrenium ion formation OR SN1 >>
Nucleophilic attack after nitrenium ion formation >> N-Hydroxylamines OR
SN1 >> Nucleophilic attack after nitrenium ion formation >> Single-Ring
Substituted Primary Aromatic Amines OR SN1 >> Nucleophilic attack after
reduction and nitrenium ion formation OR SN1 >> Nucleophilic attack
after reduction and nitrenium ion formation >> Nitro Azoarenes OR SN2 OR
SN2 >> Acylation OR SN2 >> Acylation >> N-Hydroxylamines OR SN2 >>
Acylation involving a leaving group after metabolic activation OR SN2 >>
Acylation involving a leaving group after metabolic activation >>
Geminal Polyhaloalkane Derivatives OR SN2 >> Alkylation, direct acting
epoxides and related OR SN2 >> Alkylation, direct acting epoxides and
related >> Epoxides and Aziridines OR SN2 >> Nucleophilic substitution
at sp3 carbon atom after thiol (glutathione) conjugation OR SN2 >>
Nucleophilic substitution at sp3 carbon atom after thiol (glutathione)
conjugation >> Geminal Polyhaloalkane Derivatives by DNA binding by
OASIS v.1.4
Domain
logical expression index: "g"
Referential
boundary: The
target chemical should be classified as No alert found AND SN1 AND SN1
>> Nitrenium Ion formation AND SN1 >> Nitrenium Ion formation >>
Tertiary aromatic amine by DNA binding by OECD
Domain
logical expression index: "h"
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 >> Arenes 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 >> Aromatic azo OR SN1 >> Nitrenium Ion formation >> Aromatic
nitro OR SN1 >> Nitrenium Ion formation >> Primary (unsaturated)
heterocyclic amine OR SN1 >> Nitrenium Ion formation >> Primary aromatic
amine by DNA binding by OECD
Domain
logical expression index: "i"
Referential
boundary: The
target chemical should be classified as Acylation AND Acylation >>
Acylation involving an activated (glucuronidated) ester group AND
Acylation >> Acylation involving an activated (glucuronidated) ester
group >> Arenecarboxylic Acid Esters AND No alert found by Protein
binding by OASIS v1.4
Domain
logical expression index: "j"
Referential
boundary: The
target chemical should be classified as Acylation >> Ester aminolysis OR
Acylation >> Ester aminolysis >> Amides OR AN2 OR AN2 >> Michael-type
addition to quinoid structures OR AN2 >> Michael-type addition to
quinoid structures >> N-Substituted Aromatic Amines OR AN2 >>
Michael-type addition to quinoid structures >> Substituted Phenols OR
Nucleophilic addition OR Nucleophilic addition >> Addition to
carbon-hetero double bonds OR Nucleophilic addition >> Addition to
carbon-hetero double bonds >> Ketones OR Schiff base formation OR Schiff
base formation >> Schiff base formation with carbonyl compounds OR
Schiff base formation >> Schiff base formation with carbonyl compounds
>> Aromatic carbonyl compounds OR SNAr OR SNAr >> Nucleophilic aromatic
substitution on activated aryl and heteroaryl compounds OR SNAr >>
Nucleophilic aromatic substitution on activated aryl and heteroaryl
compounds >> Activated aryl and heteroaryl compounds by Protein binding
by OASIS v1.4
Domain
logical expression index: "k"
Referential
boundary: The
target chemical should be classified as Non-Metals AND Transition Metals
by Groups of elements
Domain
logical expression index: "l"
Referential
boundary: The
target chemical should be classified as Alkali Earth OR Halogens OR
Metals by Groups of elements
Domain
logical expression index: "m"
Referential
boundary: The
target chemical should be classified as Group 14 - Carbon C AND Group 15
- Nitrogen N AND Group 15 - Phosphorus P AND Group 16 - Oxygen O AND
Group 6 - Trans.Metals Cr,Mo,W by Chemical elements
Domain
logical expression index: "n"
Referential
boundary: The
target chemical should be classified as Group 11 - Trans.Metals Cu,Ag,Au
OR Group 12 - Trans.Metals Zn,Cd,Hg OR Group 16 - Sulfur S OR Group 4 -
Trans.Metals Ti,Zr,Hf OR Group 5 - Trans.Metals V,Nb,Ta by Chemical
elements
Domain
logical expression index: "o"
Referential
boundary: The
target chemical should be classified as Not categorized by Repeated dose
(HESS)
Domain
logical expression index: "p"
Referential
boundary: The
target chemical should be classified as Phthalate esters (Testicular
toxicity) Rank C by Repeated dose (HESS)
Domain
logical expression index: "q"
Similarity
boundary:Target:
CCN(CC)c1ccc2c(c1)o{+}(.O{-}[Mo](=O)(=O)O{-}.o{+}1c3cc(N(CC)CC)ccc3c(-c3ccccc3C(=O)OCC)c3ccc(N(CC)CC)cc13)c1cc(N(CC)CC)ccc1c2-c1ccccc1C(=O)OCC_O[W](O)(=O)=O_OP(O)(O)=O
Threshold=40%,
Dice(Atom centered fragments)
Atom type; Count H attached; Hybridization
Domain
logical expression index: "r"
Similarity
boundary:Target:
CCN(CC)c1ccc2c(c1)o{+}(.O{-}[Mo](=O)(=O)O{-}.o{+}1c3cc(N(CC)CC)ccc3c(-c3ccccc3C(=O)OCC)c3ccc(N(CC)CC)cc13)c1cc(N(CC)CC)ccc1c2-c1ccccc1C(=O)OCC_O[W](O)(=O)=O_OP(O)(O)=O
Threshold=10%,
Dice(Atom centered fragments)
Atom type; Count H attached; Hybridization
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 by Skin irritation/corrosion
Exclusion rules by BfR
Domain
logical expression index: "t"
Referential
boundary: The
target chemical should be classified as (!Undefined)Group CN Lipid
Solubility < 0.4 g/kg 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 Protein
binding alerts for Chromosomal aberration by OASIS v.1.2
Domain
logical expression index: "v"
Referential
boundary: The
target chemical should be classified as Acylation OR Acylation >>
Acylation involving an activated (glucuronidated) ester group OR
Acylation >> Acylation involving an activated (glucuronidated) ester
group >> Arenecarboxylic Acid Esters by Protein binding alerts for
Chromosomal aberration by OASIS v.1.2
Domain
logical expression index: "w"
Parametric
boundary:The
target chemical should have a value of log Kow which is >= 3.04
Domain
logical expression index: "x"
Parametric
boundary:The
target chemical should have a value of log Kow which is <= 5.97
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (not sensitising)
- Additional information:
Various studieshas been investigated for the test chemicalBenzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) to observe the potential for skin sensitization to a greater or lesser extent. The studies are based on in vivo experiments in guinea pigs for target chemicalBenzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) and its structurally similar read across substances Basic Violet 1 (CAS no: 8004-87-3)and (4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride {Basic Violet 14 (CAS No: 632-99-5)}.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 Benzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) was estimated using OECD QSAR toolbox version 3.4 with log Pow as the primary descriptor. The chemical Benzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) was estimated to be not sensitizing to the Dunkin-Hartley guinea pigs. Based on the estimated result Benzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) failed to induce skin sanitization effects and hence is considered to be not sensitizing to Dunkin-Hartley guinea pigs.
The JOE DINARDO at el., (Journal of Cosmetic Science, 58, no. 3 (2007): 209-214) conducted an experimental study for read across chemical Basic violet 1 (CAS No: 8007 -87 -3) in guinea pig using modified Buehler and Klecak method for open Epicutaneous testing. For the induction phase, the left flanks of 10 albino guinea pigs were shaved and the dye test material applied three times weekly (Monday, Wednesday Friday) for three consecutive weeks. Each animal received 0.1 ml of the test material over a 1.8-cm circular area. Following the induction period, the guinea pigs entered the challenge phase. The challenge phase began after a two-week rest period when the right flank of each guinea pig was shaved and exposed to three different test material concentration (10.0%, 5.0%, and 2.5%of the induction concentration). Twenty-four hours after the last induction and challenge application, the animals were depilated to clearly observe dermal reactions. The test sites were graded for erythema and edema 24 and 48 hours post-application using a four-point ordinal scale (0 = no reaction, 1 -- slight reaction, 2 = moderate reaction, 3 = severe reaction. A positive reaction was defined as an erythema/edema value during the challenge phase of at least one skin grade higher than during the last induction phase. No erythema/edema was observed after 24 and 48 hours post-application. Hence the test substance Basic violet 1 (8007 -87 -3) was considered as not sensitizing to the guinea pigs skin.
The above results were further supported by the experimental study reported by European Commission (EC) - Scientific Committee on Cosmetology (SCC) {Environment and Quality of Life - Reports (Seventh Series)- Basic violet 14 European Commission (EC) - Scientific Committee on Cosmetology (SCC) 1988} on rabbits of read across chemical Basic Violet 14. The test material was applied topically 5% in 25%Aqueous solution of gum Arabic to the skin of guinea pigs for 5 days. After 2 weeks of rest period the challenge treatment was provided by epicuteneous injection of concentration 0.1ml 0.01, 0.001, and 0.001% in saline. The guinea pigs were observed for signs of dermal sensitization after the challenge exposure. No signs of any skin allergic reaction were observed. Hence, Basic Violet 14 can be considered to be not sensitizing to guinea pig skin.
Based on the available data for the target chemical and read across substance,it can be concluded thatchemical Benzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) is unable to cause skin sensitization and considered as not sensitizing. 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 Benzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) and its structurally similar read across substancesBasic Violet 1 (CAS no: 8004-87-3)and (4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride {Basic Violet 14 (CAS No: 632-99-5)} were observed in various studies. From the results obtained from these studies it is concluded that the chemical Benzenamine, 4-[(4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-, N-Me derivatives, molybdatesilicates (CAS No: 68647-35-8) is not likely to cause skin sensitization and hence can be classified as non-skin sensitizer.
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