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EC number: 431-540-9 | CAS number: 170573-32-7
- 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
Acute Toxicity: dermal
Administrative data
- Endpoint:
- acute toxicity: dermal
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From March 30, 1999 to April 13, 1999
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 999
- Report date:
- 1999
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 402 (Acute Dermal Toxicity)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.3 (Acute Toxicity (Dermal))
- Deviations:
- no
- GLP compliance:
- yes
- Test type:
- fixed dose procedure
- Limit test:
- yes
Test material
- Reference substance name:
- -
- EC Number:
- 431-540-9
- EC Name:
- -
- Cas Number:
- 170573-32-7
- Molecular formula:
- C21H43NO2
- IUPAC Name:
- N-(2-hydroxypropyl)-2,2,5,8,11,11-hexamethyldodecanamide
- Test material form:
- other: liquid to paste
Constituent 1
Test animals
- Species:
- rat
- Strain:
- other: HanIbm: WIST (SPF)
- Sex:
- male/female
- Details on test animals or test system and environmental conditions:
- Source: RCC Ltd Biotechnology & Animal Breeding Division CH-4414 Füllinsdorf / Switzerland
Age when treated: 9 weeks for the males and 12 weeks for the females
Temperature: 22 +/- 3°C and relative humidity: 40-70%
Light period: 12 hour light/dark cycle
Diet: pelleted Standard Kliba 3433, ad libitum and water: community tap water, ad libitum
Administration / exposure
- Type of coverage:
- semiocclusive
- Vehicle:
- polyethylene glycol
- Details on dermal exposure:
- The test substance was placed into a glass beaker on a tared Mettler balance and the vehicle (polyethylene glycol PEG 300) was added. A weight by volume dilution was prepared using a magnetic stirrer as homogenizer. Homogeneity of the test substance in the vehicle was maintained during treatment. The preparation was made shortly before dosing.
Approximately 24 hours before treatment, the backs of the animals were clipped with an electric clipper, exposing an area of approximately 10% of the total body surface. Only those animals without injury or irritation on the skin were used in the test. On test day 1, the test substance was applied at a dose of 2000 mg/kg bw evenly on the intact skin with a syringe and covered with a semi-occlusive dressing. The dressing was wrapped around the abdomen and fixed with an elastic adhesive bandage. Application volume/kg bw: 4.0 mL. Twenty-four hours after the application the dressing was removed and the skin was flushed with lukewarm tap water and dried with disposable paper towels. Thereafter, the reaction sites were assessed. - Duration of exposure:
- 24h
- Doses:
- 2000 mg/kg bw (at a concentration of 0.5 g/mL in vehivle and administered at a volume of 4 mL/kg)
- No. of animals per sex per dose:
- 5
- Control animals:
- no
- Statistics:
- No statistical analysis was used as no deaths occurred.
Results and discussion
Effect levels
- Key result
- Sex:
- male/female
- Dose descriptor:
- LD50
- Effect level:
- > 2 000 mg/kg bw
- Based on:
- test mat.
- Remarks on result:
- not determinable due to absence of adverse toxic effects
- Mortality:
- No deaths occurred during the study.
- Clinical signs:
- other: No clinical signs were observed during the observation period.
- Gross pathology:
- No macroscopic findings were observed at necropsy.
Any other information on results incl. tables
None.
Applicant's summary and conclusion
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- Under the study conditions, the dermal LD50 was determined to be >2000 mg/kg bw.
- Executive summary:
A study was conducted to determine the acute dermal toxicity of the test substance, isoC18 MIPA (100% active), according to OECD Guideline 402 and EU Method B.3, in compliance with GLP. Groups of 5 male and 5 female HanIbm: WIST (SPF) rats were exposed to the test substance (in polyethylene glycol) at a concentration of 2000 mg/kg bw via a semi-occlusive dermal application (4 mL/kg bw) for 24 h. This application was followed by a 14 d observation period. The animals were examined for clinical signs four times during Day 1 and once daily during Days 2-15. Mortality/viability were recorded together with clinical signs at the same time intervals. Body weights were recorded on Day 1 prior to administration and on Days 8 and 15. All animals were necropsied and examined macroscopically. No deaths occurred during the study. No clinical signs were observed throughout the observation period. The body weight of the animals was within the range commonly recorded for this strain and age. No macroscopic findings were noted at necropsy. Under the study conditions, the dermal LD50 was determined to be >2000 mg/kg bw (Ullmann, 1999).
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