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EC number: 218-941-2 | CAS number: 2295-31-0
- 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 (as cited in study report): 2,4-Thiazolidinedione
- Molecular formula: C3H3NO2S
- Molecular weight: 117.1277 g/mol
- Substance type: organic
- Physical state: Solid
- Smiles notation: C1C(=O)NC(=O)S1
- InChl: 1S/C3H3NO2S/c5-2-1-7-3(6)4-2/h1H2,(H,4,5,6) - 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
- Hardness:
- No data
- Test temperature:
- 21 deg.C
- pH:
- 7.8-8.0
- Dissolved oxygen:
- No data
- Salinity:
- No data
- Conductivity:
- No data
- Nominal and measured concentrations:
- No data
- Details on test conditions:
- No data
- Reference substance (positive control):
- not specified
- Key result
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 110.96 mg/L
- Nominal / measured:
- estimated
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Validity criteria fulfilled:
- not specified
- Conclusions:
- Using OECD QSAR toolbox version 3.3 the median Effective concentration (EC50) value for test chemical 1,3-thiazolidine-2,4-dione i.e 2,4-Thiazolidinedione on Pseudokirchneriella subcapitata in a 72 hour study was estimated to be 110.96 mg/L on the basis of effects on growth rate.
- 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 five closest read across substances, the short term toxicity on aquatic algae and cyanobacteria was predicted for target substance 1,3-thiazolidine-2,4-dione i.e 2,4-Thiazolidinedione (CAS no. 2295-31-0). EC50 value was estimated to be 110.96 mg/l for Pseudokirchneriella subcapitata for 72 h duration. Based on this value it can be concluded that the substance 1,3-thiazolidine-2,4-dione i.e 2,4-Thiazolidinedione (CAS no. 2295-31-0) is considered to be non toxic to aquatic environment and can be considered to be not classified as per the CLP classification criteria.
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 "i" )
and ("j"
and (
not "k")
)
)
and "l" )
and ("m"
and (
not "n")
)
)
and "o" )
and ("p"
and "q" )
)
Domain
logical expression index: "a"
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 >>
Thiazolidinediones by DNA binding by OECD
Domain
logical expression index: "b"
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: "c"
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: "d"
Referential
boundary: The
target chemical should be classified as No alert found by DNA binding by
OASIS v.1.3
Domain
logical expression index: "e"
Referential
boundary: The
target chemical should be classified as AN2 OR AN2 >> Michael-type
addition on alpha, beta-unsaturated carbonyl compounds OR AN2 >>
Michael-type addition on alpha, beta-unsaturated carbonyl compounds >>
Four- and Five-Membered Lactones OR AN2 >> Shiff base formation after
aldehyde release OR AN2 >> Shiff base formation after aldehyde release
>> Specific Acetate Esters OR Non-covalent interaction OR Non-covalent
interaction >> DNA intercalation OR Non-covalent interaction >> DNA
intercalation >> DNA Intercalators with Carboxamide Side Chain OR
Radical OR Radical >> Radical mechanism via ROS formation (indirect) OR
Radical >> Radical mechanism via ROS formation (indirect) >> Nitroarenes
with Other Active Groups 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 diazonium or
carbenium ion formation OR SN1 >> Nucleophilic attack after diazonium or
carbenium ion formation >> Nitroarenes with Other Active Groups OR SN1
>> Nucleophilic attack after reduction and nitrenium ion formation OR
SN1 >> Nucleophilic attack after reduction and nitrenium ion formation
>> Nitroarenes with Other Active Groups 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 >> Polycyclic Aromatic Hydrocarbon
Derivatives OR SN2 >> Alkylation, ring opening SN2 reaction OR SN2 >>
Alkylation, ring opening SN2 reaction >> Four- and Five-Membered
Lactones 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
attack on activated carbon Csp3 or Csp2 OR SN2 >> SN2 attack on
activated carbon Csp3 or Csp2 >> Nitroarenes with Other Active Groups by
DNA binding by OASIS v.1.3
Domain
logical expression index: "f"
Referential
boundary: The
target chemical should be classified as Not possible to classify
according to these rules by DPRA Lysine peptide depletion
Domain
logical expression index: "g"
Referential
boundary: The
target chemical should be classified as High reactive OR High reactive
>> Acrylic acid esters by DPRA Lysine peptide depletion
Domain
logical expression index: "h"
Referential
boundary: The
target chemical should be classified as No superfragment by
Superfragments ONLY
Domain
logical expression index: "i"
Referential
boundary: The
target chemical should be classified as High (Class III) by Toxic hazard
classification by Cramer (original) ONLY
Domain
logical expression index: "j"
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: "k"
Referential
boundary: The
target chemical should be classified as AN2 OR AN2 >> Michael addition
to alpha, beta-unsaturated acids and esters OR AN2 >> Michael addition
to alpha, beta-unsaturated acids and esters >> alpha, beta - Unsaturated
Carboxylic Acids and Esters OR AN2 >> Thiocarbamoylation of protein
nucleophiles OR AN2 >> Thiocarbamoylation of protein nucleophiles >>
Isothiocyanates by Protein binding alerts for Chromosomal aberration by
OASIS v1.1
Domain
logical expression index: "l"
Referential
boundary: The
target chemical should be classified as Bioavailable by Lipinski Rule
Oasis ONLY
Domain
logical expression index: "m"
Referential
boundary: The
target chemical should be classified as Non-Metals by Groups of elements
Domain
logical expression index: "n"
Referential
boundary: The
target chemical should be classified as Alkali Earth OR Metalloids by
Groups of elements
Domain
logical expression index: "o"
Similarity
boundary:Target:
O=C1CSC(=O)N1
Threshold=10%,
Dice(Atom centered fragments)
Atom type; Count H attached; Hybridization
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 <= 1.11
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 five closest read across substances, the short term toxicity on aquatic algae and cyanobacteria was predicted for target substance 1,3-thiazolidine-2,4-dione i.e 2,4-Thiazolidinedione (CAS no. 2295-31-0). EC50 value was estimated to be 110.96 mg/l for Pseudokirchneriella subcapitata for 72 h duration. Based on this value it can be concluded that the substance 1,3-thiazolidine-2,4-dione i.e 2,4-Thiazolidinedione (CAS no. 2295-31-0) is considered to be non toxic to aquatic environment and can be considered to be not classified as per the CLP classification criteria.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 110.96 mg/L
Additional information
Two studies including predicted data from validated tools for short term toxicity to aquatic algae endpoint of test chemical 1, 3-thiazolidine-2, 4-dione i.e 2, 4-Thiazolidinedione (Cas no. 2295-31-0) were summarised as follows:
First data from prediction using the OECD QSAR toolbox version 3.3 with log kow as the primary descriptor and considering the six closest read across substances, which indicate the short term toxicity on aquatic algae and cyanobacteria was predicted for target substance 1, 3-thiazolidine-2, 4-dione i.e 2, 4-Thiazolidinedione (Cas no. 2295-31-0). EC50 value was estimated to be 110.96 mg/l for Pseudokirchneriella subcapitata for 72 h duration. Based on this value it can be concluded that the substance 1, 3-thiazolidine-2, 4-dione i.e 2, 4-Thiazolidinedione (Cas no. 2295-31-0) is considered to be non toxic to aquatic environment and can be considered to be not classified as per the CLP classification criteria.
Similarly prediction by EPI suite, ECOSAR version 1.1, on the basis of similarity of structure to chemicals for which the aquatic toxicity has been previously measured by structure-activity relationships (SARs) program suggest on the basis of effects observed in a static freshwater system, the effect concentration EC50 value for the substance is estimated to be 1576.864 mg/l for green algae for 96 h duration. Based on this value, it can be concluded that the test chemical 1, 3-thiazolidine-2, 4-dione i.e 2, 4-Thiazolidinedione (Cas no. 2295-31-0) can be considered as non-toxic to green algae at environmentally relevant concentrations and can be considered not-classified as per the CLP classification criteria.
Thus based on the both predicted effect concentrations which is in the range 110.96 mg/l to 1576.864 mg/l of target come to the conclusion that test substance 1, 3-thiazolidine-2, 4-dione i.e 2, 4-Thiazolidinedione (Cas no. 2295-31-0) was likely to be non toxic to aquatic algae as it not exceed the classification criteria of aquatic toxicity as per the CLP.
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