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EC number: 274-356-2 | CAS number: 70161-20-5
- 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
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- 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.3.3 and QMRF report has been attached.
- Qualifier:
- according to guideline
- Guideline:
- other: Predicted data
- Principles of method if other than guideline:
- Prediction is done using QSAR Toolbox version 3.3 with log kow as the primary discriptors.
- GLP compliance:
- not specified
- Specific details on test material used for the study:
- - Name of the test material: Trisodium [2-[[alpha-[[2-hydroxy-5-sulpho-3-[(2,5,6-trichloro- 4-pyrimidinyl)amino]phenyl]azo]benzyl]azo]-5-sulphobenzoato(5-)]cupra
- IUPAC name: Trisodium [2-[[alpha-[[2-hydroxy-5-sulpho-3-[(2,5,6-trichloro- 4-pyrimidinyl)amino]phenyl]azo]benzyl]azo]-5-sulphobenzoato(5-)]cupra
- Molecular weight: No data
- Molecular formula: C24H11Cl3CuN7O9S2.3Na
-substance type: organic
-physical state: solid
- Smiles:OS(=O)(=O)c1ccc2c(c1)C(=O)O{-}.[Cu]{2+}13N2=NC(c2ccccc2)N=N1c1cc(S(O)(=O)=O)cc(Nc2c(Cl)c(Cl)nc(Cl)n2)c1O{-}.3 - Analytical monitoring:
- not specified
- Vehicle:
- not specified
- Test organisms (species):
- Raphidocelis subcapitata (previous names: Pseudokirchneriella subcapitata, Selenastrum capricornutum)
- Test type:
- static
- Water media type:
- freshwater
- Total exposure duration:
- 72 h
- Key result
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 138.48 mg/L
- Nominal / measured:
- estimated
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Remarks on result:
- other: not toxic
- Conclusions:
- Based on the prediction done using the OECD QSAR toolbox version 3.3 with log kow as the primary descriptor and considering the closest read across substances, the toxicity on aquatic algae predicted for Trisodium [2-[[alpha-[[2-hydroxy-5-sulpho-3-[(2,5,6-trichloro- 4-pyrimidinyl)amino]phenyl]azo]benzyl]azo]-5-sulphobenzoato(5-)]cupra (CAS: 70161-20-5). Effect concentration i.e EC50 value estimated to be 138.48 mg/l for Pseudokirchneriella subcapitata for 72 hrs duration. It can be concluded that the Trisodium [2-[[alpha-[[2-hydroxy-5-sulpho-3-[(2,5,6-trichloro- 4-pyrimidinyl)amino]phenyl]azo]benzyl]azo]-5-sulphobenzoato(5-)]cupra (CAS: 70161-20-5) is likely to be not toxic to aquatic algae, hence it can be considered to be “not classified” as per the CLP classification criteria for aquatic environment.
- Executive summary:
Based on the prediction done using the OECD QSAR toolbox version 3.3 with log kow as the primary descriptor and considering the closest read across substances, the toxicity on aquatic algae predicted for Trisodium [2-[[alpha-[[2-hydroxy-5-sulpho-3-[(2,5,6-trichloro- 4-pyrimidinyl)amino]phenyl]azo]benzyl]azo]-5-sulphobenzoato(5-)]cupra (CAS: 70161-20-5). Effect concentration i.e EC50 value estimated to be 138.48 mg/l for Pseudokirchneriella subcapitata for 72 hrs duration. It can be concluded that the Trisodium [2-[[alpha-[[2-hydroxy-5-sulpho-3-[(2,5,6-trichloro- 4-pyrimidinyl)amino]phenyl]azo]benzyl]azo]-5-sulphobenzoato(5-)]cupra (CAS: 70161-20-5) is likely to be not toxic to aquatic algae, hence it can be considered to be “not classified” as per the CLP classification criteria for aquatic environment.
Reference
The
prediction was based on dataset comprised from the following
descriptors: EC50
Estimation method: Takes average value from the 5 nearest neighbours
Domain logical expression:Result: In Domain
((((((((((("a"
or "b" or "c" )
and ("d"
and (
not "e")
)
)
and ("f"
and (
not "g")
)
)
and ("h"
and (
not "i")
)
)
and ("j"
and (
not "k")
)
)
and "l" )
and "m" )
and "n" )
and "o" )
and ("p"
and (
not "q")
)
)
and ("r"
and "s" )
)
Domain
logical expression index: "a"
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 >> Arenes by DNA binding by OECD
Domain
logical expression index: "b"
Referential
boundary: The
target chemical should be classified as 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 v1.4
Domain
logical expression index: "c"
Referential
boundary: The
target chemical should be classified as SNAr AND SNAr >> Nucleophilic
aromatic substitution AND SNAr >> Nucleophilic aromatic substitution >>
Halo-pyrimidines by Protein binding by OECD
Domain
logical expression index: "d"
Referential
boundary: The
target chemical should be classified as No alert found by DNA binding by
OASIS v.1.4
Domain
logical expression index: "e"
Referential
boundary: The
target chemical should be classified as AN2 OR AN2 >> Nucleophilic
addition reaction with cycloisomerization OR AN2 >> Nucleophilic
addition reaction with cycloisomerization >> Hydrazine Derivatives OR
AN2 >> Shiff base formation after aldehyde release OR AN2 >> Shiff base
formation after aldehyde release >> Specific Acetate Esters OR Radical
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) >> Hydrazine
Derivatives OR SN1 OR SN1 >> Nucleophilic attack after carbenium ion
formation OR SN1 >> Nucleophilic attack after carbenium ion formation >>
Specific Acetate Esters OR SN2 OR SN2 >> Acylation OR SN2 >> Acylation
>> Specific Acetate Esters OR SN2 >> Direct nucleophilic attack on
diazonium cation OR SN2 >> Direct nucleophilic attack on diazonium
cation >> Hydrazine Derivatives OR SN2 >> Nucleophilic substitution at
sp3 Carbon atom OR SN2 >> Nucleophilic substitution at sp3 Carbon atom
>> Specific Acetate Esters by DNA binding by OASIS v.1.4
Domain
logical expression index: "f"
Referential
boundary: The
target chemical should be classified as Non binder, MW>500 by Estrogen
Receptor Binding
Domain
logical expression index: "g"
Referential
boundary: The
target chemical should be classified as Strong binder, NH2 group by
Estrogen Receptor Binding
Domain
logical expression index: "h"
Referential
boundary: The
target chemical should be classified as Non binder, MW>500 by Estrogen
Receptor Binding
Domain
logical expression index: "i"
Referential
boundary: The
target chemical should be classified as Non binder, non cyclic structure
by Estrogen Receptor Binding
Domain
logical expression index: "j"
Referential
boundary: The
target chemical should be classified as 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 v1.4
Domain
logical expression index: "k"
Referential
boundary: The
target chemical should be classified as Acylation OR Acylation >>
(Tio)carbamoylation of protein nucleophiles OR Acylation >>
(Tio)carbamoylation of protein nucleophiles >> Isothiocyanates,
Isocyanates OR Acylation >> Acylation involving an activated
(glucuronidated) ester group by Protein binding by OASIS v1.4
Domain
logical expression index: "l"
Referential
boundary: The
target chemical should be classified as Class 5 (Not possible to
classify according to these rules) by Acute aquatic toxicity
classification by Verhaar (Modified) ONLY
Domain
logical expression index: "m"
Referential
boundary: The
target chemical should be classified as Class 5 (Not possible to
classify according to these rules) by Acute aquatic toxicity
classification by Verhaar (Modified) ONLY
Domain
logical expression index: "n"
Referential
boundary: The
target chemical should be classified as Reactive unspecified by Acute
aquatic toxicity MOA by OASIS ONLY
Domain
logical expression index: "o"
Referential
boundary: The
target chemical should be classified as Reactive unspecified by Acute
aquatic toxicity MOA by OASIS ONLY
Domain
logical expression index: "p"
Referential
boundary: The
target chemical should be classified as Anion AND Aromatic compound AND
Carbonic acid derivative AND Carboxylic acid derivative AND Carboxylic
acid salt AND Cation AND Halogen derivative AND Sulfonic acid AND
Sulfonic acid derivative by Organic functional groups, Norbert Haider
(checkmol)
Domain
logical expression index: "q"
Referential
boundary: The
target chemical should be classified as Alcohol by Organic functional
groups, Norbert Haider (checkmol)
Domain
logical expression index: "r"
Parametric
boundary:The
target chemical should have a value of log Kow which is >= -10.9
Domain
logical expression index: "s"
Parametric
boundary:The
target chemical should have a value of log Kow which is <= 1.5
Description of key information
Based on the prediction done using the OECD QSAR toolbox version 3.3 with log kow as the primary descriptor and considering the closest read across substances, the toxicity on aquatic algae predicted for Trisodium [2-[[alpha-[[2-hydroxy-5-sulpho-3-[(2,5,6-trichloro- 4-pyrimidinyl)amino]phenyl]azo]benzyl]azo]-5-sulphobenzoato(5-)]cupra (CAS: 70161-20-5). Effect concentration i.e EC50 value estimated to be 138.48 mg/l for Pseudokirchneriella subcapitata for 72 hrs duration. It can be concluded that the Trisodium [2-[[alpha-[[2-hydroxy-5-sulpho-3-[(2,5,6-trichloro- 4-pyrimidinyl)amino]phenyl]azo]benzyl]azo]-5-sulphobenzoato(5-)]cupra (CAS: 70161-20-5) is likely to be not toxic to aquatic algae, hence it can be considered to be “not classified” as per the CLP classification criteria for aquatic environment.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 138.48 mg/L
Additional information
Following three studies of target chemical and structurally similar read across includes predicted data and experimental data to conclude the toxicity extent of Trisodium [2-[[alpha-[[2-hydroxy-5-sulpho-3-[(2,5,6-trichloro- 4-pyrimidinyl)amino]phenyl]azo]benzyl]azo]-5-sulphobenzoato(5-)]cupra (CAS: 70161-20-5) towards aquatic algae is summarized as follows:
Based on the prediction done using the OECD QSAR toolbox version 3.3 with log kow as the primary descriptor and considering the closest read across substances, the toxicity on aquatic algae predicted for Trisodium [2-[[alpha-[[2-hydroxy-5-sulpho-3-[(2,5,6-trichloro- 4-pyrimidinyl)amino]phenyl]azo]benzyl]azo]-5-sulphobenzoato(5-)]cupra (CAS: 70161-20-5). Effect concentration i.e EC50 value estimated to be 138.48 mg/l for Pseudokirchneriella subcapitata for 72 hrs duration. It can be concluded that the Trisodium [2-[[alpha-[[2-hydroxy-5-sulpho-3-[(2,5,6-trichloro- 4-pyrimidinyl)amino]phenyl]azo]benzyl]azo]-5-sulphobenzoato(5-)]cupra (CAS: 70161-20-5) is likely to be not toxic to aquatic algae, hence it can be considered to be “not classified” as per the CLP classification criteria for aquatic environment.
The above predicted data of target chemical is supported by the experimental study of structurally similar read across Benzyl alcohol (CAS:100-51-6) from the authoritative database J-Check 2017 suggests that the Toxicity to aquatic algae and cyanobacteria according to the OECD Guideline 201 (Alga, Growth Inhibition Test) to study the effects of Benzyl alcohol. The effective concentration to 50 % of algae when exposed to Benzyl alcohol for 72 h is 770 mg/L. It can be concluded from the growth rate value that the Benzyl alcohol is not toxic to the aquatic algae can be considered as “not classified” as per the classification criteria for aquatic environment.
Thus based on the effect concentrations which is in the range 138.48 mg/L mg/l to 770 mg/l give the conclusion that test substance Trisodium [2-[[alpha-[[2-hydroxy-5-sulpho-3-[(2,5,6-trichloro- 4-pyrimidinyl)amino]phenyl]azo]benzyl]azo]-5-sulphobenzoato(5-)]cupra (CAS: 70161-20-5) was likely to be not toxic to aquatic algae at environmentally relevant concentrations and can be considered to be “not classified” as per the CLP classification criteria.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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