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EC number: 415-430-8 | CAS number: 86403-32-9 CYASORB UV-3853 LIGHT STABILIZER; DASTIB 845; SANDUVOR 845
- 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
Endpoint summary
Administrative data
Key value for chemical safety assessment
Genetic toxicity in vitro
Description of key information
This substance was negative in a guideline Ames assay (bacterial reverse mutation assay) with and without metabolic activation.
This substance was negative in a guideline chromosomal aberrations assay in V79 cells, with and without metabolic activation.
This substance was negative in a guideline gene mutation assay in mouse lymphoma L5178Y cells, with and without metabolic activation.
Link to relevant study records
- Endpoint:
- in vitro gene mutation study in bacteria
- Remarks:
- Type of genotoxicity: gene mutation
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study report obtained through inquiry process. SNIF file obtained from ECHA.
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.13/14 (Mutagenicity - Reverse Mutation Test Using Bacteria)
- Deviations:
- no
- GLP compliance:
- yes
- Type of assay:
- bacterial reverse mutation assay
- Target gene:
- histidine
- Species / strain / cell type:
- S. typhimurium, other: LT 2, TA 98, TA 100, TA 1535, TA 1537
- Metabolic activation:
- with and without
- Metabolic activation system:
- S9-Mix
- Test concentrations with justification for top dose:
- Concentration range in the main test (without metabolic activation): 8 to 5000 pg/ plate
Concentration range in the main test (with metabolic activation): 8 to 5000 pg/plate. - Vehicle / solvent:
- Solvent: Ethanol
- Details on test system and experimental conditions:
- Concentration of the test substance resulting in precipitation: 1000 pg/plate
- Species / strain:
- S. typhimurium, other: LT 2, TA 98, TA 100, TA 1535, TA 1537
- Metabolic activation:
- without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- cytotoxicity
- Remarks:
- 1000 picograms/plate
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- not applicable
- Positive controls validity:
- valid
- Species / strain:
- S. typhimurium, other: LT 2, TA 98, TA 100, TA 1535, TA 1537
- Metabolic activation:
- with
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- cytotoxicity
- Remarks:
- 40 picograms/plate
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- not applicable
- Positive controls validity:
- valid
- Remarks on result:
- other: all strains/cell types tested
- Remarks:
- Migrated from field 'Test system'. Remarks: main test
- Conclusions:
- Interpretation of results (migrated information):
negative
This substance was negative in a guideline Ames assay (bacterial reverse mutation assay) with and without metabolic activation. - Endpoint:
- in vitro cytogenicity / chromosome aberration study in mammalian cells
- Remarks:
- Type of genotoxicity: chromosome aberration
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study report obtained through inquiry process. SNIF file obtained from ECHA.
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.10 (Mutagenicity - In Vitro Mammalian Chromosome Aberration Test)
- Version / remarks:
- also according to OECD 473
- GLP compliance:
- yes
- Type of assay:
- other: in vitro mammalian cytogenicity (B10)
- Species / strain / cell type:
- Chinese hamster lung fibroblasts (V79)
- Metabolic activation:
- with and without
- Metabolic activation system:
- S9-Mix
- Vehicle / solvent:
- Water
- Details on test system and experimental conditions:
- Exposure period (with metabolic activation): 5 hours. Exposure period (without metabolic activation): 5 hours. Fixation time : 18 and 24h
- Species / strain:
- Chinese hamster lung fibroblasts (V79)
- Metabolic activation:
- without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- cytotoxicity
- Remarks:
- at highest dose only, 1:25 dilution
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- not applicable
- Positive controls validity:
- valid
- Species / strain:
- Chinese hamster lung fibroblasts (V79)
- Metabolic activation:
- with
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- cytotoxicity
- Remarks:
- at dilution of 1:40, resulting in 50% MI
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- not applicable
- Positive controls validity:
- valid
- Remarks on result:
- other: all strains/cell types tested
- Remarks:
- Migrated from field 'Test system'.
- Conclusions:
- Interpretation of results (migrated information):
negative with metabolic activation
negative without metabolic activation
This substance was negative in a guideline chromosomal aberrations assay in V79 cells, with and without metabolic activation. - Endpoint:
- in vitro gene mutation study in mammalian cells
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2014-02-04 - 2014-05-26
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- GLP-study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 476 (In Vitro Mammalian Cell Gene Mutation Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.17 (Mutagenicity - In Vitro Mammalian Cell Gene Mutation Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: recommendations of the "International Workshop on Genotoxicity Tests Workgroup" (the IWGT), published in the literature (Clive et al., 1995, Moore et al., 1999, 2000, 2002, 2003, 2006 and 2007)
- Deviations:
- not applicable
- GLP compliance:
- yes
- Type of assay:
- in vitro mammalian cell gene mutation tests using the thymidine kinase gene
- Target gene:
- thymidine kinase (TK)
- Species / strain / cell type:
- mouse lymphoma L5178Y cells
- Details on mammalian cell type (if applicable):
- L5178Y/TK+/- -3.7.2C mouse lymphoma cells;
Stock cultures of the cells were stored in liquid nitrogen (-196°C). The cultures were checked for
mycoplasma contamination. Cell density was preferably kept below 1 x 106 cells/mL. - Metabolic activation:
- with and without
- Metabolic activation system:
- (adult male Wistar) rat liver S9-mix induced by a combination of phenobarbital and B-naphthoflavone
- Test concentrations with justification for top dose:
- In the first experiment, the test substance was tested up to concentrations of 17 μg/mL and 80 μg/mL in the absence and presence of 4% (v/v) S9-mix, respectively.
In the second experiment, the test substance was tested up to concentrations of 10 μg/mL and 90 μg/ mL in the absence and presence of 8% (v/v) S9-mix. - Vehicle / solvent:
- The test substance was dissolved in ethanol.
- Untreated negative controls:
- yes
- Remarks:
- see Solvent / vehicle controls
- Negative solvent / vehicle controls:
- yes
- Remarks:
- = negative control
- True negative controls:
- no
- Positive controls:
- yes
- Positive control substance:
- cyclophosphamide
- methylmethanesulfonate
- Remarks:
- Without metabolic activation (-S9-mix) Methyl methanesulfonate (MMS) was used as positive c ontrol, with metabolic activation (+S9-mix) Cyclophosphamide (CP) was used.
- Details on test system and experimental conditions:
- METHOD OF APPLICATION: in medium
DURATION
- Exposure duration: 3h (1st experiment), 24 h (2nd experiment)
- Expression time (cells in growth medium): 2 d
- Selection time (if incubation with a selection agent): The microtiter plates for CE(day2) and MF were
incubated for 11 or 12 days.
- Fixation time (start of exposure up to fixation or harvest of cells):
SELECTION AGENT (mutation assays): Selective medium consisted of basic medium supplemented
with 20% (v/v) heat-inactivated horse serum (total amount of serum = 20%, R20) and 5 μg/mL trifluo
rothymidine (TFT)
STAIN (for cytogenetic assays): After the incubation period, the plates for the TFT-selection were
stained for 2 hours, by adding 0.5 mg/mL 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide
(MTT) to each well.
NUMBER OF REPLICATIONS: 2
NUMBER OF CELLS EVALUATED: For determination of the MF a total number of 9.6x10E5 cells/
concentration were plated in five 96-well microtiter plates, each well containing 2000 cells in selectiv
e medium (TFT-selection), with the exception of the positive control groups (MMS and CP) where a
total number of 9.6x10E5 cells/concentration were plated in ten 96-well microtiter plates, each well
containing 1000 cells in selective medium (TFT-selection).
DETERMINATION OF CYTOTOXICITY
In order to select appropriate dose levels for mutagenicity testing, cytotoxicity data were obtained by
treating 8x10E6 cells (10E6 cells/mL for 3 hours treatment) or 5x10E6 cells (1.25 x 10E5 cells/mL for
24 hours treatment) with a number of test substance concentrations increasing with approximately
half log steps. The cell cultures for the 3 hours treatment were placed in sterile 30 mL centrifuge tu
bes, and incubated in a shaking incubator at 37.0 ± 1.0°C and 145 spm. The cell cultures for the 24
hours treatment were placed in sterile 75 cm2 culture flasks at 37.0 ± 1.0°C. The test substance w
as tested in the absence and presence of 4% (v/v) S9-fraction. Since the test substance was poorly
soluble in the exposure medium, the highest tested concentration was 333 μg/mL exposure medium.
OTHER: List of protocol deviations
1. During the subculturing period the humidity was recorded to be outside the range of 80 - 100% as
specified for a maximum of 6 hours in the first mutation experiment with a minimum of 63% and for a
maximum of 6.5 hours in the second mutation experiment with a minimum of 53%.
Evaluation: The deviations in the humidity were caused by adjustment of the humidity in the incubator
after opening of the incubator door. The culture flasks were covered with a screw cap (during subcul
turing), all microtiter plates were covered with a lid and wrapped in aluminum foil (determination of
mutant frequency) (continuous oxygen and CO2 exchange enabling cell respiration was ensured)
and normal cell growth was observed in the negative controls, these deviations of the humidity had
no effect on the results of the study.
2. For determination of the CE(day2) a total number of 164 wells was used for the positive control in
the first experiment (presence of S9-mix).
Evaluation: Since 164 out of the 192 wells could be used for the determination of the CE(day2) (de
viation of 15%), this deviation in the number of wells had no effect on the results of the study.
3. In the second experiment, the cloning efficiency of both solvent controls (CE(day2)) (absence
of S9-mix) and of one of the solvent controls (CE(day2)) (presence of S9-mix) were not within the
protocolled range (65 - 120%).
Evaluation: The values of 176 and 127% (absence of S9-mix) and 121% (presence of S9-mix) were
outside the limit of the range (120%). Clear negative results were obtained. Therefore this deviation
in the cloning efficiency had no effect on the results of the study.
The study integrity was not adversely affected by the deviations.
Evaluation criteria
A mutation assay was considered acceptable if it met the following criteria:
a) The absolute cloning efficiency of the solvent controls (CE(day2)) is between 65 and 120% in order
to have an acceptable number of surviving cells analysed for expression of the TK mutation.
b) The spontaneous mutation frequency in the solvent control is ≥ 50 per 10E6 survivors and ≤ 170 per 10E6 survivors.
c) The growth rate (GR) over the 2-day expression period for the negative controls should be between
8 and 32 (3 hours treatment) and between 32-180 (24 hours treatment).
d) The mutation frequency of MMS should not be below 500 per 10E6 survivors, and for CP not below
700 per 10E6 survivors. - Species / strain:
- mouse lymphoma L5178Y cells
- 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:
- other: negative control was vehicle control
- Positive controls validity:
- valid
- Additional information on results:
- TEST-SPECIFIC CONFOUNDING FACTORS
- Precipitation: the test substance precipitated in the exposure medium at concentrations of 100 μg/mL and above. The test substance was tested beyond the limit of the solubility to obtain adequate cytotoxicity data, the concentration used as the highest test substance concentration for the dose range finding test was 333 μg/mL.
RANGE-FINDING/SCREENING STUDIES: In the dose range finding test, L5178Y mouse lymphoma cells were treated with a test substance concentration range of 3 to 333 μg/mL in the absence of S9-mix with a 3 and 24 hour treatment period and in the presence of S9-mix with a 3 hour treatment period.
In the absence of S9-mix, the relative suspension growth was 22% at the test substance concentration of 10 μg/mL compared to the relative suspension growth of the solvent control. Hardly any cell survival was observed at test substance concentrations of 33 μg/mL and above.
In the presence of S9-mix, no toxicity in the relative suspension growth was observed up to test substance concentrations of 33 g/mL compared to the solvent control. Hardly any cell survival was observed at test substance concentrations of 100 μg/mL and above.
In the absence of S9-mix, the relative suspension growth was 10% at the test substance concentration of 10 μg/mL compared to the relative suspension growth of the solvent control. Hardly any cell survival was observed at test substance concentrations of 33μg/mL and above.
COMPARISON WITH HISTORICAL CONTROL DATA:
The spontaneous mutation frequencies in the solvent-treated control cultures were between the minimum and maximum value of the historical control data range. - Remarks on result:
- other: all strains/cell types tested
- Conclusions:
- Interpretation of results (migrated information):
negative with metabolic activation
negative without metabolic activation
The test substance was not mutagenic in the mouse lymphoma L5178Y test system under the experimental conditions. - Executive summary:
The mutagenic activity of the test substance was evaluated in an in vitro mammalian cell gene mutation
test with L5178Y mouse lymphoma cells (with independent repeat) according to OECD Guideline No.
476 and EU Method B17. Therein, the effects of the test substance on the induction of forward mutations
at the thymidine-kinase locus (TK-locus) in L5178Y mouse lymphoma cells were observed. The test
was performed in two independent experiments in the absence and presence of S9-mix (rat liver S9-mix
induced by a combination of phenobarbital and B-naphthoflavone). The test substance was dissolved
in ethanol.
In the first experiment, the test substance was tested up to concentrations of 17 μg/mL and 80 μg/
mL in the absence and presence of 4% (v/v) S9-mix, respectively. The incubation time was 3 hours.
The test substance was tested up to cytotoxic levels of 90 and 67% in the absence and presence of
S9-mix, respectively. The test substance was tested beyond precipitating dose levels in the presence
of S9-mix. In the second experiment, the test substance was tested up to concentrations of 10μg/mL
and 90 μg/mL in the absence and presence of 8% (v/v) S9-mix. The incubation times were 24 hours
for incubations in the absence of S9-mix and 3 hours for incubations in the presence of S9-mix. The
test substance was tested up to cytotoxic levels of 86 and 83% in the absence and presence of S9-
mix, respectively. The test substance was tested beyond precipitating dose levels in the presence of
S9-mix. The spontaneous mutation frequencies in the solvent-treated control cultures were between the
minimum and maximum value of the historical control data range and within the acceptability criteria
of this assay. Mutation frequencies in cultures treated with positive control chemicals were increased
9.2- and 9.5-fold for MMS in the absence of S9-mix, and 17- and 20-fold for CP in the presence of S9-
mix. It was therefore concluded that the test conditions, both in the absence and presence of S9-mix,
were appropriate and that the metabolic activation system (S9-mix) functioned properly. In the absence
of S9-mix, the test substance did not induce a significant increase in the mutation frequency in the first
experiment. This result was confirmed in an independent repeat experiment with modifications in the
duration of treatment time. In the presence of S9-mix, the test substance did not induce a significant
increase in the mutation frequency in the first experiment. This result was confirmed in an independent
repeat experiment with modifications in the concentration of the S9 for metabolic activation. Hence, it
was concluded that the test substance is not mutagenic in the mouse lymphoma L5178Y test system
under the experimental conditions.
Referenceopen allclose all
Further investigation showed that at concentrations 40 and 30 μg/mL in the first and second experiment, respectively the test substance already precipitated in the exposure medium. The test substance was tested beyond the limit of the solubility to obtain adequate mutagenicity data.
First mutagenicity test
In the absence of S9-mix, the dose levels of 0.1 to 3 μg/mL showed no cytotoxicity. Therefore, the
dose levels of 0.1 and 0.3 μg/mL were not regarded relevant for mutation frequency measurement. The
dose levels of 9 to 13 μg/mL showed similar cytotoxicity. Therefore, the dose level of 13 μg/mL was not
regarded relevant for mutation frequency measurement.
In the presence of S9-mix, the dose levels of 0.1 to 30 μg/mL showed no cytotoxicity. Therefore, the
dose levels of 0.1 and 0.3 μg/mL were not regarded relevant for mutation frequency measurement. The
dose levels of 50 and 60 μg/mL showed similar cytotoxicity. Therefore, the dose level of 60 μg/mL was
not regarded relevant for mutation frequency measurement. The dose levels of 90 and 100 μg/mL were
not used for mutation frequency measurement, since these dose levels were too toxic for further testing.
The dose levels selected to measure mutation frequencies at the TK-locus were: Without S9-mix: 1,
3, 5, 7, 9, 11, 15 and 17 μg/mL exposure medium. With S9-mix: 1, 3, 10, 30, 40, 50, 70 and 80 μg/
mL exposure medium.
In the absence of S9-mix, the relative total growth of the highest test substance concentration of 17
μg/mL was reduced by 81% and of the dose level just below (15 μg/mL) by 90% compared to the total
growth of the solvent controls.
In the presence of S9-mix, the relative total growth of the two highest test substance concentrations
were reduced by 67 and 66% compared to the total growth of the solvent controls.
Evaluation of the mutagenicity
No significant increase in the mutation frequency at the TK locus was observed after treatment with
the test substance either in the absence or in the presence of S9-mix. The numbers of small and large
colonies in the test substance treated cultures were comparable to the numbers of small and large
colonies of the solvent controls.
Second mutagenicity test
To obtain more information about the possible mutagenicity of the test substance, a second mutation
experiment was performed in the absence of S9-mix with a 24 hour treatment period and in the presence
of 8% (v/v) S9-mix with a 3 hour treatment period.
Evaluation of toxicity
In the absence of S9-mix, the dose levels of 12.5 to 20 μg/mL were not used for mutation frequency
measurement, since these dose levels were too toxic for further testing.
In the presence of S9-mix, the dose levels of 0.3 to 30 μg/mL showed no cytotoxicity. Therefore, the
dose levels of 0.3, 3 and 30 μg/mL were not regarded relevant for mutation frequency measurement.
The dose levels of 40 and 70 μg/mL showed similar cytotoxicity. Therefore, the dose level of 50 μg/mL
was not regarded relevant for mutation frequency measurement. The dose level of 85 μg/mL showed
an explainable high RSG and was not regarded relevant for mutation frequency measurement.
The dose levels selected to measure mutation frequencies at the TK-locus were: Without S9-mix: 0.03,
0.1, 0.3, 1, 3, 5, 8.5 and 10 μg/mL exposure medium. With S9-mix: 1, 10, 40, 60, 70, 75, 80 and 90
μg/mL exposure medium.
In the absence of S9-mix, the relative total growth of the highest test substance was reduced by 86%
compared to the total growth of the solvent controls.
In the presence of S9-mix, the relative total growth of the highest test substance concentration was
reduced by 83% compared to the total growth of the solvent controls.
Evaluation of mutagenicity
No significant increase in the mutation frequency at the TK locus was observed after treatment with
the test substance either in the absence or in the presence of S9-mix. The numbers of small and large
colonies in the test substance treated cultures were comparable to the numbers of small and large
colonies of the solvent controls.
Discussion
The spontaneous mutation frequencies in the solvent-treated control cultures were between the
minimum and maximum value of the historical control data range (See APPENDIX 3, Table 11).
The growth rate over the two-day expression period for cultures treated with ethanol was between 14
and 25 (3 hours treatment) and 77 and 95 (24 hours treatment) (See APPENDIX 2, Table 5, Table 6,
Table 8 and Table 9).
Mutation frequencies in cultures treated with positive control chemicals were increased by 9.2- and 9.5-
fold for MMS in the absence of S9-mix, and by 17- and 20-fold for CP in the presence of S9-mix, in
the first and second experiment respectively (See APPENDIX 1, Table 3 and Table 4). It was therefore
concluded that the test conditions, both in the absence and presence of S9-mix, were appropriate for
the detection of a mutagenic response and that the metabolic activation system (S9-mix) functioned
properly. In addition the observed mutation frequencies of the positive control substances were within
the acceptability criteria of this assay (See APPENDIX 3, Table 12).
In the absence of S9-mix, the test substance did not induce a significant increase in the mutation
frequency in the first experiment. This result was confirmed in a repeat experiment with modifications
in the duration of treatment time.
In the presence of S9-mix, the test substance did not induce a significant increase in the mutation
frequency in the first experiment. This result was confirmed in an independent experiment with
modifications in the composition of the S9 concentration for metabolic activation.
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (negative)
Additional information
In the genotoxicity assays presented, the conclusions have been consistently negative (non-mutagenic). In vivo studies are considered to be not scientifically justified. From an assessment report (NICNAS) this consideration is supported.
Short description of key information:
This substance is non-genotoxic when tested in vitro.
Endpoint Conclusion: No adverse effect observed (negative)
Justification for classification or non-classification
This substance is non-genotoxic when tested in vitro and in vivo, and so is not classified as a mutagen.
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