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Diss Factsheets
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EC number: 605-293-4 | CAS number: 162568-25-4
- 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://chesar.echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_toxicological-information.png)
Acute Toxicity: oral
Administrative data
- Endpoint:
- acute toxicity: oral
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- The study was conducted according to internationally accepted technical guidelines and in compliance with GLP in a contract research organization. The study is scientifically valid and the report is fully adequate for assessment, despite some minor restrictions (e.g. due to limited reporting).
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 996
- Report date:
- 1996
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 401 (Acute Oral Toxicity)
- Version / remarks:
- of 1987
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: Appraisal of the Safety of Chemicals in Foods, Drugs and Cosmetics, Division of Pharmacology, FDA, 1959
- Deviations:
- not specified
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Certified by BAM according to DIN EN 45001.
- Test type:
- standard acute method
- Limit test:
- no
Test material
Constituent 1
Test animals
- Species:
- rat
- Strain:
- Wistar
- Sex:
- male/female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Wistar rats, strain: Winkelmann, Paderborn (SPF-Quality) with appropriate range of bodyweight at study start.
- Bodyweight at study start (day of dosing): Males: minimum 214 g, maximum 231 g,
Females: minimum 194 g, maximum 210 g.
- Housing: Group housing with up to 5 animals by sex in cages.
- Fasting period: From 16 hours before test start
- Diet (except for fasting period): Commercially available standard laboratory animal diet:
"Rat/Mouse Maintenance" from Altromin, Lage, Germany
- Water was provided ad libitum
ENVIRONMENTAL CONDITIONS
The animal room was maintained at:
- Temperature (°C): 22.5 ± 2.5°C
- Relative Humidity (%): 40 to 60%
- Photoperiod (artificial lighting): 12 h/day
Administration / exposure
- Route of administration:
- oral: gavage
- Vehicle:
- olive oil
- Details on oral exposure:
- - Dose formulation: 20% and 50% of the test material emulsified in the vehicle by warming it to 50°C and using an ultraturrax.
Administration of the dose formulation to the animals at body temperature.
- Dose volume: 1 mL / 100 g bw at each dose.
Individual dose volume was calculated based on individual bodyweight.
- For different doses and dose volumes, see Table 1 in "Any other information on materials and methods incl. tables"
- Rationale for doses selected: Based on a pre-test, which was not detailed in the study report. - Doses:
- see Table 1 in "Any other information on materials and methods incl. tables"
- No. of animals per sex per dose:
- 5
- Control animals:
- yes
- Details on study design:
- - Duration of observation period following administration: 14 days
- Frequency of observations:
It has not been clearly specified in the report at what time points clinical signs and mortality were recorded, but the following records have been
reported:
Clinidal signs: At least shortly after dosing and over 8 hours after dosing (Day 0), and at 7 and 14 days post dosing.
Mortality: At least at 24 hours and 14 days post dosing.
Weighing of each animal: All animals on Day 0 for calculation of individual dose volume, and on Days 7 and 14 (end of observation period).
- Necropsy: All animals were necropsied at termination of the study.
- Control animals were untreated. As animals from a stock culture served as controls, apparently these were not necropsied concurrent with dosed animals. - Statistics:
- LD50 was estimated for 24 hours and 14 days post dosing. Determination of a slope function was inappropriate as there were no deaths in both dose groups.
Results and discussion
Effect levels
- Key result
- Sex:
- male/female
- Dose descriptor:
- LD50
- Effect level:
- > 2 515 mg/kg bw
- Based on:
- test mat.
- Remarks:
- WS400517
- Remarks on result:
- other: No deaths at 1006 or 2515 mg/kg.
- Mortality:
- There were no deaths during the 14-day observation period post dosing:
Single Dose of WS400517 at: Mortality
1006 mg/kg bw 0/5 (m); 0/5 (f)
2515 mg/kg bw 0/5 (m); 0/5 (f) - Clinical signs:
- other: Shortly after dosing and 7 and 14 days afterwards clinical signs attributable to the treatment with the test material were not evident. Apathic behaviour, minimal in degree, was seen in the high dose group within 8 hours post dosing. This was not consider
- Gross pathology:
- Macroscopic pathology findings attributable to the treatment with the test material were not evident.
Applicant's summary and conclusion
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- In view of the attained oral LD50 > 5000 mg/kg bodyweight for the test material equivalent to > 2515 mg/kg bodyweight for WS400517, the outcome of the present study does not necessitate any classification and labelling regarding acute oral toxicity according to EU regulations [DIRECTIVE 67/548/EEC and REGULATION (EC) 1272/2008]. In addition, sex-related differences in toxicity of the test material after single oral administration were not evident.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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