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Diss Factsheets
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EC number: 235-414-2 | CAS number: 12222-00-3
- 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
![](https://echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_toxicological-information.png)
Genetic toxicity: in vitro
Administrative data
- Endpoint:
- in vitro gene mutation study in bacteria
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 28/06/2016-07/11/2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 016
- Report date:
- 2017
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 471 (Bacterial Reverse Mutation Assay)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of assay:
- bacterial reverse mutation assay
Test material
- Reference substance name:
- Tetrasodium [μ-[[4,4'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-hydroxynaphthalene-2,7-disulphonato]](8-)]]dicuprate(4-)
- EC Number:
- 235-414-2
- EC Name:
- Tetrasodium [μ-[[4,4'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-hydroxynaphthalene-2,7-disulphonato]](8-)]]dicuprate(4-)
- Cas Number:
- 12222-00-3
- Molecular formula:
- C32H14Cu2N4O16S4.4Na
- IUPAC Name:
- Tetrasodium [mu-[[4,4'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-hydroxynaphthalene-2,7-disulphonato]](8-)]]dicuprate(4-)
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- - Name of test material: Direct Blue 080
Constituent 1
Method
Species / strain
- Species / strain / cell type:
- S. typhimurium TA 1535, TA 1537, TA 98, TA 100 and E. coli WP2
- Metabolic activation:
- with and without
- Metabolic activation system:
- S9
- Test concentrations with justification for top dose:
- For toxicity experiment, the starting suspension (5000 µg/0.1 mL) was diluted to concentration series 10 - 5000 µg per plate. The concentration row was tested for the toxicity in strain TA 98 without metabolic activation.
No precipitation occured in any concentration. In the highest concentration (5000 µg/0.1 mL) top agar was dark coloured, but evaluation was possible. No toxicity was observed in any dose. The concentration of 5000 µg/0.1 mL was then used as maximum in the first mutagenicity experiments - Vehicle / solvent:
- Water
Controls
- Untreated negative controls:
- yes
- Negative solvent / vehicle controls:
- yes
- True negative controls:
- no
- Positive controls:
- yes
- Positive control substance:
- other: N-methyl-N´-nitro-N-nitrosoguanidine
- Details on test system and experimental conditions:
- Test procedure:
The first experiments and toxicity test: 100 uL of the test substance of required concentration, 100 uL of 16-18 h culture of tester strain of density 108-109 CFU/mL, 0.5 mL relevant buffer and 30 (100) uL of S9 post mitochondrial fraction (in case of test with metabolic activation) were added to the 2 mL of molten top agar (with trace of histidine or tryptophan) kept in a test tube at 45 +/- 3 °C. After shaking the mixture was poured into a minimal glucose agar plate.
The second experiments: 0.5 mL of relevant buffer, 100 L of the test substance of required concentration, 100 uL of 16-18 h culture of tester strain of density 108-109 CFU/mL and 30 (100) uL of S9 post mitochondrial fraction in experiment with metabolic activation were mixed and shaken at 37 +/- 1 °C for 30 minutes. Then, 2 mL of molten top agar (with trace of histidine or tryptophan) was added and the mixture was poured into a minimal glucose agar plate.
Petri dishes prepared one or the other way were incubated of 48 - 72 h at 37 +/- 1°C, the number of revertant colonies on the plate was counted manually with exception of positive controls, which were counted by an AccuCount 1000.
For an adequate estimate of variation, triplicate plating was used at each dose level except in the toxicity test with strain TA 98, where test substance was tested in duplo.
Selection of doses/toxicity: 2.0 mL of water for injection were added to 100 mg
of the test substance in a test tube to reach the maximum dose recommended in guidelines - 5000 µg per plate (per 0.1 mL). The test substance was not dissolved at the highest concentration of application form, but it dissolved in top agar, because no precipitation was observed in Petri dishes. The other concentrations should be dissolved – sponsor declared solubility in water 26.12 gL-1 (i.e. 2612 μg per 0.1 mL). - Statistics:
- Spontaneous reversions in negative and positive controls were compared with historical controls in the laboratory
Results and discussion
Test resultsopen allclose all
- Species / strain:
- S. typhimurium TA 1535
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- valid
- Positive controls validity:
- valid
- Species / strain:
- S. typhimurium TA 1537
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- valid
- Positive controls validity:
- valid
- Species / strain:
- S. typhimurium TA 100
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- valid
- Positive controls validity:
- valid
- Species / strain:
- S. typhimurium TA 98
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- valid
- Positive controls validity:
- valid
- Species / strain:
- E. coli WP2 uvr A
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- valid
- Positive controls validity:
- valid
Applicant's summary and conclusion
- Conclusions:
- Under the above-described experimental design, the test substance, Direct Blue 080, was non mutagenic for all the Salmonella typhimurium as well as Escherichia coli strains with as well as without metabolic activation.
Pre-incubation had no influence on study results. - Executive summary:
The test substance Direct Blue 080 was assayed for the mutagenicity by the Bacterial Reverse Mutation Test. The performed test was based on EU method B.13/14 Mutagenicity – Reverse mutation test using bacteria,which is analogous to the OECD Test Guideline No. 471.
Four indicator Salmonella typhimurium strains TA 98, TA 100, TA 1535, TA 1537 and one indicator Escherichia coli WP2 uvrA strainwere used. The test substance was diluted in water for injection and assayed in doses of 50 - 5000mg per plate, which were applied to plates in volume of 0.1 mL.
Experiments were performed without as well as with metabolic activation with a supernatant of rat liver and a mixture of cofactors. The first experiments were performed without and the second experiments with 30 minutes of pre-incubation at 37±1°C and shaking.
Although, some questionable results occurred in some experiments, in the arrangement given above, the test substance, Direct Blue 080, was non-mutagenic for all the used tester strainswithout as well as with metabolic activation.
Pre-incubation had no influence on study results.
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