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EC number: 244-311-1 | CAS number: 21282-97-3
- 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
Genetic toxicity: in vitro
Administrative data
- Endpoint:
- in vitro gene mutation study in bacteria
- Remarks:
- Type of genotoxicity: gene mutation
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 16/November/1990 - 11/December/1990
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP compliant study conducted in accordance with international guidelines.
Cross-reference
- Reason / purpose for cross-reference:
- reference to same study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 990
- Report date:
- 1991
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 471 (Bacterial Reverse Mutation Assay)
- Deviations:
- no
- Principles of method if other than guideline:
- Not applicable.
- GLP compliance:
- yes (incl. QA statement)
- Type of assay:
- bacterial reverse mutation assay
Test material
- Test material form:
- other: light yellow liquid
- Details on test material:
- Name: P5306 (Methacrylsäure-2-Acetoacetoxyethylester)
Batch received: 15/November/1990
Storage: in the dark at ambient temperature
Constituent 1
Method
- Target gene:
- The purpose of this study was to establish the potential of P5306 to induce gene mutations in the bacterium Salmonella typhimurium, causing
the histidine-dependent strains to revert to the wild-type phenotype. The particular damage induced to DNA by a mutagen may cause reversions
to occur which are observable in certain strains of Salmonella typhimurium, but not in others. It is necessary, therefore, to use a variety of bacterial
strains in order to test for a broad range of chemical mutagens. At the present time, available data suggest that the use of the 5 strains used in this
project permits the detection of a wide spectrum of mutagens.
Species / strainopen allclose all
- Species / strain / cell type:
- S. typhimurium TA 1535
- Details on mammalian cell type (if applicable):
- not applicable.
- Additional strain / cell type characteristics:
- not applicable
- Species / strain / cell type:
- S. typhimurium TA 1537
- Details on mammalian cell type (if applicable):
- not applicable
- Additional strain / cell type characteristics:
- not applicable
- Species / strain / cell type:
- S. typhimurium TA 1538
- Details on mammalian cell type (if applicable):
- not applicable
- Additional strain / cell type characteristics:
- not applicable
- Species / strain / cell type:
- S. typhimurium TA 98
- Details on mammalian cell type (if applicable):
- not applicable
- Additional strain / cell type characteristics:
- not applicable
- Species / strain / cell type:
- S. typhimurium TA 100
- Details on mammalian cell type (if applicable):
- not applicable
- Additional strain / cell type characteristics:
- not applicable
- Metabolic activation:
- with and without
- Metabolic activation system:
- Rat Arochlor 1254 induced microsomal fraction (S9-mix)
- Test concentrations with justification for top dose:
- 15 ug/plate, 50 ug/plate, 150 ug/plate, 500 ug/plate, 1500 ug/plate and 5000 ug/plate
- Vehicle / solvent:
- - Vehicle(s)/solvent(s) used: Dimethylsulphoxide
Controls
- Untreated negative controls:
- no
- Remarks:
- Concurrent solvent control only
- Negative solvent / vehicle controls:
- yes
- True negative controls:
- no
- Remarks:
- Concurrent solvent control only
- Positive controls:
- yes
- Positive control substance:
- 9-aminoacridine
- 2-nitrofluorene
- sodium azide
- other: 2-aminoanthracene (2-AAN)
- Details on test system and experimental conditions:
- Test Solution:
------------
P5306 and the positive control substances, except sodium azide, were dissolved in dimethylsulphoxide. Sodium azide was dissolved in sterile,
ultra-pure water.
Inducer:
--------
The polychlorinated biphenyl mixture, Aroclor 1254, was obtained from Monsanto (UK) Limited, Newport, Wales.
Agar Plates:
-----------
The Vogel-Bonner Medium E agar plates with 2% glucose used in the Ames test were obtained from Becton Dickinson Limited, Scotland.
Animals:
--------
Male Fischer 344 rats were obtained from Charles River (UK).
Preparation of Bacteria:
--------------------
Samples of each strain were grown by culturing for 16 h at 37°C in nutrient broth (25 g Oxoid Nutrient Broth NO.2). These cultures were kept for up
to 2 days at +4°C, used within that period, then discarded.
Preparation of the Metabolic Activation System:
------------------------------------------
ANIMALS
Male Fischer 344 rats (average weight 256 g) were injected once intraperitoneally with Aroclor 1254 (diluted in corn oil to a concentration of 200 mg.ml-1) at a dosage of 500 mg.kg-1. They were allowed drinking water continuously, but food was withheld for 16 h before they were killed in an
atmosphere of carbon dioxide 5 days after injection.
Preparation of the Assay Plates:
----------------------------
Diluted agar (0.6% Difco Bacto-agar, 0.6% NaCl) was autoclaved and, just before use, 5 ml of sterile 1.0 mM L-histidine.HC1, 1.0 mM biotin solution
was added to each 100 ml of soft agar and thoroughly mixed. This molten agar, maintained in a water bath at 45°C, was dispensed in 2 ml volumes
into small sterile tubes to which were added in order:
0.5 ml S9 mix or 0.05 M phosphate buffer, pH 7.4
0.1 ml bacteria (ca 2 x 109 cells.ml-1)
0.1 ml solvent or test solution
The tube contents, which were continually cooling, were mixed and then poured in minimal medium plates obtained from Becton Dickinson
limited, Scotland. These plates contained 25 ml of 1.7% Gibco Bacteriological agar in Bonner Medium E (2) with 2% glucose.
When the soft agar had set,· the plates were inverted and incubated at IRI 750756 14 37°C for 2 days whereupon colonies were counted using a Biotran III automated counter (New Brunswick Incorporated, NJ, USA) at maximum sensitivity ie colonies of 0.1 mm or more in diameter counted. The
plates were also examined for precipitates and, microscopically, for microcolony growth. - Evaluation criteria:
- Evaluation:
----------
A test was considered acceptable if for each strain:
i) the bacteria demonstrated their typical responses to crystal violet, ampicillin and u.v. light.
ii) at least 2 of the vehicle control plates were within the following ranges: TA 1535, 4-30; TA 1537, 1-20; TA 98, 10-60; TA 100, 60-200 and TA 1538, 5-35.
iii) on at least 2 of the positive control plates there were x 2 the mean vehicle control mutant numbers per plate, or in the case of TA 100, x 1.5 the mean
vehicle control mutant numbers per plate. If the mean colony count on the vehicle control plates was less than 10 then a value of 10 was assumed for
assessment purposes. In such cases a minimum count of 20 was required on at least 2 of the positive control plates.
iv) no toxicity or contamination was observed in at least 4 dose levels.
v) in cases where a mutagenic response was observed, that no more than one dose level was discarded before the dose which gave the highest significant
mean colony number.
Where these criteria were met, a significant mutagenic response was recorded if there was:
i) for s. typhimurium strains TA 1535, TA 1537, TA 1538 and TA 98, at least a doubling of the mean concurrent vehicle control values at some
concentration of the test substances and, for S. typhimurium strain TA 100, a I.S-fold increase over the control value. If the mean colony count on the
vehicle control plates was less than 10 then a value of 10 was assumed for assessment purposes. In such cases a minimum count of 20 was required
before a significant mutagenic response was identified.
ii) a dose related response, although at high dose levels this relationship could be inverted because of, for example, (1) toxicity to the bacteria generally,
(2) specific toxicity to the mutants and (3) inhibition of foreign compound metabolising enzymes where mutagens require metabolic activation by the liver.
iii) a reproducible effect in independent tests. - Statistics:
- no data
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 nor precipitates, but tested up to recommended limit concentrations
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- not examined
- Positive controls validity:
- valid
- Species / strain:
- S. typhimurium TA 1537
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity nor precipitates, but tested up to recommended limit concentrations
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- not examined
- Positive controls validity:
- valid
- Species / strain:
- S. typhimurium TA 1538
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity nor precipitates, but tested up to recommended limit concentrations
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- not examined
- Positive controls validity:
- valid
- Species / strain:
- S. typhimurium TA 98
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity nor precipitates, but tested up to recommended limit concentrations
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- not examined
- Positive controls validity:
- valid
- Species / strain:
- S. typhimurium TA 100
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity nor precipitates, but tested up to recommended limit concentrations
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- not examined
- Positive controls validity:
- valid
- Additional information on results:
- Toxicity Test:
------------
There was no toxicity to the bacterial strain TA 100 in either the presence or absence of S9 mix at any concentration tested.
There was no precipitation of the test substance.
Any other information on results incl. tables
Quality Control:
All strains of S. typhimurium were sensitive to crystal violet, whereas only the plasmid-containing strains, TA 98 and TA 100, were resistant to ampicillin. The strains were also tested for sensitivity to u.v. light emitted over a period of 10 s from a CAMAG u.v. lamp set at 254 nm. Increased sensitivity to u.v. light was demonstrated. These results are consistent with the known properties of these bacteria.
Vehicle Control Groups:
The vehicle control values were generally within the normal ranges experienced in this laboratory and reported in the literature with these strains of S. typhimurium.
Positive Control Groups:
The positive control values were generally within the range expected for each bacterial strain and activation system.
Applicant's summary and conclusion
- Conclusions:
- Interpretation of results (migrated information):
negative
No mutagenic activity was observed in either the presence or absence of S9 mix. There was no toxicity to the bacteria in any of the experiments performed. There was no precipitation of the test substance. It was concluded that the test item was not mutagenic to Salmonella typhimurium when tested in dimethylsulphoxide up to the predetermined maximum limit of 5000 µg per plate. - Executive summary:
A study according to OECD Guideline 471 (Bacterial Reverse Mutation Assay) was carried in year 1990. Tested up to 5000 ug/plate without and with metabolic activation the test substance induced no statistically significant dose-related increase in the numbers of revertant (His+) colonies in each of the five tester strains (TA 1535; TA 1537; TA 1538; TA 98 and TA 100). The positive control values were generally within the range expected for each bacterial strain and activation system. There was no toxicity to the bacteria in any of the experiments performed. There was no precipitation of the test substance. It was concluded that the test item was not mutagenic to Salmonella typhimurium when tested in dimethylsulphoxide up to the predetermined maximum limit of 5000 µg per plate.
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