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EC number: 229-355-1 | CAS number: 6486-23-3
- 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
Endpoint summary
Administrative data
Description of key information
The test item was assessed for its possible contact allergenic potential in a local lymph node assay according to OECD TG 429. The test was performed using test item concentrations of 5, 10 and 20% (w/v). The animals (5 female mice/dose group) did not show any clinical signs during the course of the study and no cases of mortality were observed. In this study Stimulation Indices (S.I.) of 1.4, 1.6 and 1.9 were determined with the test item at concentrations of 5, 10 and 20% (w/v) in DMSO, respectively. The results obtained with the positive control confirmed the validity of the test. The test item was not a skin sensitiser under the conditions tested.
Key value for chemical safety assessment
Skin sensitisation
Link to relevant study records
- Endpoint:
- skin sensitisation: in vivo (LLNA)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From 27 OCT 2004 to 17 NOV 2004
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: guideline study (OECD TG 429) GLP compliant
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
- Deviations:
- no
- GLP compliance:
- yes
- Type of study:
- mouse local lymph node assay (LLNA)
- Species:
- mouse
- Strain:
- CBA
- Sex:
- female
- Details on test animals and environmental conditions:
- TEST ANIMALS
- strain: CBA/CaOlaHsd
- Source: Harlan Netherlands, Horst/The Netherlands
- Age at study initiation: 8-12 weeks (beginning of acclimatization)
- Weight at study initiation: mean: 18.2 +/- 1.3 g
- Housing: individually, Makrolon Type I cages
- Diet: pelleted standard diet (Harlan Winkelmann, Borchen/Germany), ad libitum
- Water: tap water, ad libitum
- Acclimatization: yes (acclimatization period not given)
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 22 +/-3
- Humidity (%): 30-70%
- Photoperiod (hrs dark / hrs light): 12 hrs/12 hrs
- Vehicle:
- dimethyl sulphoxide
- Concentration:
- 0%, 5%, 10%, 20% (w/v)
- No. of animals per dose:
- 5 females per dose group
2 females in the pre-test - Details on study design:
- RANGE FINDING TESTS:
- non GLP
- Compound solubility: 20% (w/v) suspension in DMSO was the highest technically applicable concentration; higher concentrations could also not be achieved with other vehicles
- Irritation: no swelling was observed at concentrations of 2.5, 5.0, 10 and 20% (w/v) after a single application
- Systemic toxicity: not observed up to the highest concentration tested
MAIN STUDY
ANIMAL ASSIGNMENT AND TREATMENT
- Name of test method: LLNA
- Criteria used to consider a positive response:
1: exposure to at least one concentration of the test item resulted in an incorporation of 3H-methyl thymidine at least 3-fold or greater than that recorded in control mice as indicated by the stimulation index
2: data are compatible with a conventional dose response, although allowance must be made for either local toxicity or immunological suppression
TREATMENT PREPARATION AND ADMINISTRATION:
- individual preparation of weight volume dilutions using a magnetic stirrer as homogenizer
- test item preparations were made freshly before each dosing occasion
- 25 µl were spread over the entire dorsal surface of each ear lobe once daily for three consecutive days - Positive control substance(s):
- hexyl cinnamic aldehyde (CAS No 101-86-0)
- Statistics:
- - calculation of mean values and standard deviations for body weight
- Dunnett-test (ANOVA) to test for statistical significance of the results between the test item groups - Positive control results:
- Stimulation indices of 1.96, 3.03 and 4.92 were determined with the positive control substance at concentrations of 5%, 10% and 25% (w/v), respectively, in acetone:olive oil (4+1). An EC3 value of 9.9% (w/v) was calculated.
- Key result
- Parameter:
- SI
- Value:
- 1.4
- Test group / Remarks:
- 5%
- Key result
- Parameter:
- SI
- Value:
- 1.6
- Test group / Remarks:
- 10%
- Key result
- Parameter:
- SI
- Value:
- 1.9
- Test group / Remarks:
- 20%
- Parameter:
- SI
- Remarks on result:
- other: Stimulation indices were all below 3. The following SI were calculated: 5% test item: 1.4 10% test item: 1.6 20% test item: 1.9
- Parameter:
- other: disintegrations per minute (DPM)
- Remarks on result:
- other: Background: 0.0 dpm Control group: 615 dpm/lymph node 5% test item: 878 dpm/lymph node 10% test item: 987 dpm/lymph node 20% test item: 1175 dpm/lymph node
- Interpretation of results:
- not sensitising
- Remarks:
- Criteria used for interpretation of results: EU
- Conclusions:
- The test substance was not sensitising in this LLNA in concentrations up to 20% (w/v) in DMSO, the highest technically achievable concentration.
- Executive summary:
The test item was assessed for its possible contact allergenic potential in a local lymph node assay according to OECD TG 429. The test was performed using test item concentrations of 5, 10 and 20% (w/v). The animals (5 female mice/dose group) did not show any clinical signs during the course of the study and no cases of mortality were observed. In this study Stimulation Indices (S.I.) of 1.4, 1.6 and 1.9 were determined with the test item at concentrations of 5, 10 and 20% (w/v) in DMSO, respectively. The results obtained with the positive control confirmed the validity of the test. The test item was not a skin sensitiser under the conditions tested.
- Endpoint:
- skin sensitisation: in vitro
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- an in vitro skin sensitisation study does not need to be conducted because adequate data from an in vivo skin sensitisation study are available
Referenceopen allclose all
The animals did not show any clinical signs during the course of the study and no cases of mortality were observed. Due to the intense yellow colour of the test item local irritation reactions such as ear redness could not be detected. The body weight of the animals was within the normal range. Calculation of the EC3 value was not performed, because no test concentration produced a SI of 3 or higher.
Endpoint conclusion
- Endpoint conclusion:
- no study available
Respiratory sensitisation
Endpoint conclusion
- Endpoint conclusion:
- no study available
Justification for classification or non-classification
No classification
The test item did not caus skin sensitisation in a LLNA study.
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