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EC number: 205-080-2 | CAS number: 132-87-6
- 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:
- The supporting QMRF report has been attached
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 201 (Alga, Growth Inhibition Test)
- 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 test material: 7-(benzoylamino)-4-hydroxynaphthalene-2-sulfonic acid
- Molecular formula: C17 H13 N O5 S
- Molecular weight: 343.3577 g/mol
- Smiles notation: c1ccc(cc1)C(=O)Nc2ccc3c(c2)cc(cc3O)S(=O)(=O)O
- InChl: 1S/C17H13NO5S/c19-16-10-14(24(21,22)23)9-12-8-13(6-7-15(12)16)18-17(20)11-4-2-1-3-5-11/h1-10,19H,(H,18,20)(H,21,22,23)
- Substance type: Organic
- Physical state: Solid - Test organisms (species):
- Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum)
- Test type:
- static
- Water media type:
- freshwater
- Total exposure duration:
- 72 h
- Hardness:
- 24 mg/L as CaCO3
- Test temperature:
- 22 degree C
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 140.02 mg/L
- Nominal / measured:
- estimated
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Validity criteria fulfilled:
- not specified
- Conclusions:
- The effect concentration EC50 value for the substance is estimated to be 140.02 mg/l for Species for 96 hrs duration. Based on this value the substance 7-(benzoylamino)-4-hydroxynaphthalene-2-sulfonic acid (132-87-6) can be considered as likely to be non-toxic to aquatic environment and can be considered as not classified as per the CLP classification regulations.
- Executive summary:
Using the OECD QSAR toolbox version 3.3 with log kow as the primary descriptor and considering the five closest read across substances, the short term toxicity on aquatic algae and cyanobacteria was predicted for target substance 7-(benzoylamino)-4-hydroxynaphthalene-2-sulfonic acid (132-87-6). EC50 value was estimated to be 140.02mg/l for Desmodesmus subspicatus for 72 h duration. Based on this value 7-(benzoylamino)-4-hydroxynaphthalene-2-sulfonic acid (132-87-6) can be considered as likely to be non-toxic to aquatic environment and can be considered as not classified as per the CLP classification regulations.
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" or "d" or "e" or "f" )
and ("g"
and (
not "h")
)
)
and ("i"
and (
not "j")
)
)
and ("k"
and (
not "l")
)
)
and "m" )
and "n" )
and "o" )
and ("p"
and "q" )
)
Domain
logical expression index: "a"
Referential
boundary: The
target chemical should be classified as Non-covalent interaction AND
Non-covalent interaction >> DNA intercalation AND Non-covalent
interaction >> DNA intercalation >> DNA Intercalators with Carboxamide
Side Chain by DNA binding by OASIS v.1.3
Domain
logical expression index: "b"
Referential
boundary: The
target chemical should be classified as Low reactive AND Low reactive >>
N-substituted aromatic amides by DPRA Cysteine peptide depletion
Domain
logical expression index: "c"
Referential
boundary: The
target chemical should be classified as Low reactive AND Low reactive >>
N-substituted aromatic amides by DPRA Lysine peptide depletion
Domain
logical expression index: "d"
Referential
boundary: The
target chemical should be classified as Strong binder, OH group by
Estrogen Receptor Binding
Domain
logical expression index: "e"
Referential
boundary: The
target chemical should be classified as Acylation AND Acylation >> Ester
aminolysis AND Acylation >> Ester aminolysis >> Amides by Protein
binding by OASIS v1.3
Domain
logical expression index: "f"
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: "g"
Referential
boundary: The
target chemical should be classified as No alert found 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 >> 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 >> 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 Schiff base formers OR Schiff base formers >>
Chemicals Activated by P450 to Glyoxal OR Schiff base formers >>
Chemicals Activated by P450 to Glyoxal >> Ethylenediamines (including
piperazine) 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 >> Aromatic nitro OR SN1 >> Nitrenium Ion formation >>
Secondary aromatic amine OR SN1 >> Nitrenium Ion formation >>
Unsaturated heterocyclic azo OR SN2 OR SN2 >> Direct Acting Epoxides and
related OR SN2 >> Direct Acting Epoxides and related >> Epoxides by DNA
binding by OECD
Domain
logical expression index: "i"
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: "j"
Referential
boundary: The
target chemical should be classified as Acylation >> Direct Acylation
Involving a Leaving group >> Azlactone OR Michael addition OR Michael
addition >> Acid imides OR Michael addition >> Acid imides >> Acid
imides-MA OR No alert found OR SN2 OR SN2 >> SN2 reaction at sp3 carbon
atom OR SN2 >> SN2 reaction at sp3 carbon atom >> Allyl acetates and
related chemicals by Protein binding by OECD
Domain
logical expression index: "k"
Referential
boundary: The
target chemical should be classified as Not possible to classify
according to these rules (GSH) by Protein binding potency
Domain
logical expression index: "l"
Referential
boundary: The
target chemical should be classified as Moderately reactive (GSH) OR
Moderately reactive (GSH) >> Substituted 1-Alken-3-ones (MA) by Protein
binding potency
Domain
logical expression index: "m"
Referential
boundary: The
target chemical should be classified as No superfragment by
Superfragments ONLY
Domain
logical expression index: "n"
Referential
boundary: The
target chemical should be classified as Bioavailable by Lipinski Rule
Oasis ONLY
Domain
logical expression index: "o"
Referential
boundary: The
target chemical should be classified as Very fast by Bioaccumulation -
metabolism half-lives ONLY
Domain
logical expression index: "p"
Parametric
boundary:The
target chemical should have a value of log Kow which is >= -1.1
Domain
logical expression index: "q"
Parametric
boundary:The
target chemical should have a value of log Kow which is <= 2.08
Description of key information
Using the OECD QSAR toolbox version 3.3 with log kow as the primary descriptor and considering the five closest read across substances, the short term toxicity on aquatic algae and cyanobacteria was predicted for target substance 7-(benzoylamino)-4-hydroxynaphthalene-2-sulfonic acid (132-87-6). EC50 value was estimated to be 140.02mg/l for Desmodesmus subspicatus for 72 h duration. Based on this value the 7-(benzoylamino)-4-hydroxynaphthalene-2-sulfonic acid (132-87-6) can be considered as non-toxic to aquatic environment and can be considered as not classified as per the CLP classification regulations.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 140.02 mg/L
Additional information
Toxicity to algae for 7-(benzoylamino)-4-hydroxynaphthalene-2-sulfonic acid (132-87-6) was summaries with predicted data for target and by using functional read across studies 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 five closest read across substances, the short term toxicity on aquatic algae and cyanobacteria was predicted for target substance 7-(benzoylamino)-4-hydroxynaphthalene-2-sulfonic acid (132-87-6). EC50 value was estimated to be 140.02mg/l for Desmodesmus subspicatus for 72 h duration.
Based on the prediction done using the EPI Suite ECOSAR version 1.10, the short term toxicity on green algae was predicted for 7-(benzoylamino)-4-hydroxynaphthalene-2-sulfonic acid. On the basis of effects observed in a static freshwater system, the effect concentration EC50 value for the substance was estimated to be 1979.289mg/l for green algae in 96 duration.
Another prediction done using the three different models i.e, Battery, Leadscope and SciQSAR used within Danish QSAR database, the short term toxicity on green algae was predicted for 7-(benzoylamino)-4-hydroxynaphthalene-2-sulfonic acid. The average EC50 value was given by the third model i.e, Battery model. On the basis of effects observed in a static freshwater system, the effect concentration EC50 value for 7-(benzoylamino)-4-hydroxynaphthalene-2-sulfonic acid is estimated to be 1236.04 mg/l for Pseudokirchneriella subcapitata during 72 hr exposure duration. Thus, on the basis of EC50 value, it can be concluded that 7-(benzoylamino)-4-hydroxynaphthalene-2-sulfonic acid was likely to be non-toxic to green algae at environmentally relevant concentrations and can be considered not-classified as per the CLP classification criteria.
Toxicity to aquatic algae was performed in read across, Acetic acid ethenyl ester (108-05-4) from J-check,2010 according to the OECD Guideline 201 (Alga, Growth Inhibition Test). After the 72 hrs, EC 50 and NOEC value was determined to be 8.9 and 0.20 mg/l on the basis of growth rate and EC 50 and NOEC value for Acetic acid ethenyl ester was determined to be 8.8 and 2.1 mg/l on the basis of AUG. Based on the EC 50 value, Acetic acid ethenyl ester (108-05-4) was considered to be toxic to algae but as it was readily biodegradable in nature it can be considered as not classified as per the CLP regulations.
Based on the all the weight of evidences, it was considered that 7-(benzoylamino)-4-hydroxynaphthalene-2-sulfonic acid (132-87-6) was considered to be non-toxic to aquatic organism and can be considered to be not classified for toxicity to aquatic organism as per the CLP regulations.
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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