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Diss Factsheets
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EC number: - | CAS number: -
- 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://echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_toxicological-information.png)
Acute Toxicity: dermal
Administrative data
- Endpoint:
- acute toxicity: dermal
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 29 August 2017 - 13 September 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 402 (Acute Dermal Toxicity)
- Version / remarks:
- 1987
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 870.1200 (Acute Dermal Toxicity)
- Version / remarks:
- August 1998
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.3 (Acute Toxicity (Dermal))
- Version / remarks:
- May 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: Appendix to Director General Notification, No. 12-Nousan-8147. Agricultural Production Bureau, Ministry of Agriculture, Forestry and Fisheries of Japan (JMAFF)
- Version / remarks:
- November 2000, including the most recent revisions.
- Deviations:
- no
- GLP compliance:
- yes
- Test type:
- fixed dose procedure
- Limit test:
- yes
Test material
- Test material form:
- liquid
- Details on test material:
- - Physical appearance: pale yellow liquid
- Storage conditions: at room temperature
Constituent 1
- Specific details on test material used for the study:
- - No correction factor for purity was required.
- pH (1% in water, indicative range): 4.09 – 3.70
- Density: 1.113 g/cm^3
Test animals
- Species:
- rat
- Strain:
- other: Crl: WI(Han)
- Sex:
- male/female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Source: Charles River Deutschland, Sulzfeld, Germany
- Females nulliparous and non-pregnant:yes
- Age at study initiation: approx. 10 weeks old
- Weight at study initiation: males: 264-298 g; females: 174-208 g.
- Fasting period before study: no
- Housing: Group housing (up to 5 animals of the same sex together) on arrival and individual housing during the study. Polycarbonate cages (Makrolon MIV type; height 18 cm.) containing sterilized sawdust were used.
- Diet: Pelleted rodent diet (SM R/M-Z from SSNIFF® Spezialdiäten GmbH, Soest, Germany), ad libitum throughout the study, except during designated procedures.
- Water: Municipal tap-water, ad libitum
- Acclimation period: 5 days
ENVIRONMENTAL CONDITIONS (set to maintain)
- Temperature (°C): 18-24 (actual: 21-22)
- Humidity (%): 40-70 (actual: 49-72)
- Air changes (per hr): 10
- Photoperiod (hrs dark / hrs light): 12/12
IN-LIFE DATES: From: 29 August 2017 To: 13 September 2017
Administration / exposure
- Type of coverage:
- occlusive
- Vehicle:
- unchanged (no vehicle)
- Details on dermal exposure:
- TEST SITE
- Area of exposure: 25 cm^2 for males, 18 cm^2 for females
- % coverage: 10% of the total body surface
- Type of wrap if used: The test item was held in contact with the skin with a dressing, consisting of a surgical gauze patch (Surgy 1D), successively covered with aluminum foil and Coban elastic bandage. A piece of Micropore tape was additionally used for fixation of the bandages in females only.
REMOVAL OF TEST SUBSTANCE
- Washing (if done): using water
- Time after start of exposure: 24 hours
TEST MATERIAL
- Amount applied: 5000 mg/kg bodyweight
- Constant volume or concentration used: yes - Duration of exposure:
- 24 hours (1 animal exposure between 7 and 22 hours)
- Doses:
- The dose volume for each animal was based on the body weight measurement prior to dosing. Dose volume (mL/kg body weight) was calculated as follows: Dose level (g/kg bw) / spec.gravity or density (g/mL).
- No. of animals per sex per dose:
- 5 males and 5 females
- Control animals:
- no
- Details on study design:
- - Duration of observation period following administration: 14 days
- Frequency of observations: Mortality: twice daily; Clinical observations: at periodic intervals on the day of dosing (at least three times) and once daily thereafter; Body weights: on day 1 (pre-administration), day 8 and day 15.
- Necropsy of survivors performed: yes
Results and discussion
Effect levels
- Key result
- Sex:
- male/female
- Dose descriptor:
- LD50
- Effect level:
- > 5 000 mg/kg bw
- Based on:
- test mat.
- Mortality:
- No mortality occurred.
- Clinical signs:
- - Hunched posture, shallow respiration, piloerection and/or chromodacryorrhoea (snout) were noted for the animal between day 1 and day 3.
- Scabs (back and left flank), scales (back), focal erythema (back and left flank) and/or general erythema (back, neck and left flank) were noted for several animals during the observation period. Maculate erythema, brown discoloration and/or scales were seen in the treated skin-area of several animals during the observation period. These local effects were considered not to have affected the conclusion of the study. - Body weight:
- The mean body weight gain during the observation period was within the range expected for rats used in this type of study.
- Gross pathology:
- No abnormalities were found at macroscopic post mortem examination of the animals.
Applicant's summary and conclusion
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- In an acute dermal toxicity study, performed according to OECD guideline 402 and GLP principles, the dermal LD50 value of X-19657 in Wistar rats was established to exceed 5000 mg/kg body weight. Based on this result, the test item is not classified for acute toxicity according to GHS and Regulation (EC) No. 1272/2008.
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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