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Diss Factsheets
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EC number: 446-560-3 | 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:
- 2005-04-05 to 2005-08-01
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 005
- Report date:
- 2005
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 402 (Acute Dermal Toxicity)
- Version / remarks:
- 23 February 1987
- GLP compliance:
- yes
- Test type:
- standard acute method
- Limit test:
- no
Test material
- Reference substance name:
- -
- EC Number:
- 446-560-3
- EC Name:
- -
- Cas Number:
- 213265-83-9
- Molecular formula:
- C4HCl2FN2
- IUPAC Name:
- 4,6-dichloro-5-fluoropyrimidine
1
Test animals
- Species:
- rat
- Strain:
- Wistar
- Sex:
- male/female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Source: Harlan/Winkelmann GmbH, 33178 Borchen, Germany
- Females (if applicable) nulliparous and non-pregnant: yes
- Age at study initiation: 9-13 weeks
- Weight at study initiation: males: 203-255 g; females: 207-232 g
- Fasting period before study:
- Housing: The animals were caged individually in polycarbonate cages on low dust wood granulate bedding (J. Rettenmaier & Sohne, 73494 Rosenberg, Germany).
- Diet (e.g. ad libitum): The animals received the standard diet "Provimi Kliba 3883.0.15 Maus/Ratte Haltung, Kaiseraugst Switzerland", ad libitum
- Water (e.g. ad libitum): tap water, ad libitum
- Acclimation period: 5 days
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 22 +/- 2
- Humidity (%): 55 +/- 5
- Air changes (per hr): 10
- Photoperiod (hrs dark / hrs light): 12/12
Administration / exposure
- Type of coverage:
- semiocclusive
- Vehicle:
- unchanged (no vehicle)
- Details on dermal exposure:
- TEST SITE
- Area of exposure: between 1.0 and 20.0 cm²
- % coverage: approx. 10%
- Type of wrap if used: For each dose and animal the required amount of the pure liquid test substance was weighed and applied as uniformly and thinly as possible to the test area, covered with a gauze-layer (6.0 cm x 5.0 cm = 30.0 cm²) of a ,,Cutiplast® steril" coated with air-tight ,,Leukoflex®". The gauze strip was placed on the rat's back and secured in place using ,,Peha®-Haft" cohesive stretch tape (8 cm x 23 cm) and additionally covered with a "Lomir biomedical Inc rat jacket", which was connected with a
safety pin to the stretch tape to ensure that the animals could not ingest the test
substance.
REMOVAL OF TEST SUBSTANCE
- Washing (if done): After 24 h the dressings were removed and the area was rinsed with tepid water using soap and gently patting the area dry.
- Time after start of exposure: 24 h
TEST MATERIAL
- Amount(s) applied (volume or weight with unit): between 20.5 and 75.0 mg/cm²
- Duration of exposure:
- 24 h
- Doses:
- 160, 400, 1000, 4000 mg/kg bw
- No. of animals per sex per dose:
- 5
- Control animals:
- not specified
- Details on study design:
- - Duration of observation period following administration: 21 days
- Frequency of observations and weighing: Clinical signs and mortality rates were determined several times on the day of application and subsequently at least once daily for an observation period of at least 21 days. The weight gain of the animals was checked weekly until the end of the study.
- Necropsy of survivors performed: yes
- Other examinations performed: clinical signs, body weight - Statistics:
- The LD50 value was calculated with the aid of a software program according to Spearman, Karber (D.J. Finney; Statistical method in biological assay, 2nd Edition, Griffin, London, 524-530; 1971). The algorithm was taken from L. Sachs (Angewandte Statistik, 6th Edition 1984, pp. 178 ff.). Where calculation of the LD50 using the software program was not possible or meaningful, an assessment was made based on the applied dose and dose-response curve, respectively.
Results and discussion
Effect levelsopen allclose all
- Key result
- Sex:
- male
- Dose descriptor:
- LD50
- Effect level:
- 365 mg/kg bw
- Based on:
- test mat.
- Key result
- Sex:
- female
- Dose descriptor:
- LD50
- Effect level:
- 304 mg/kg bw
- Based on:
- test mat.
- Mortality:
- All animals of the 1000 and 4000 mg/kg bw treatment group died within 2 days. In the 400 mg/kg bw dose group 3 males and 4 females died after 2 to 3 days. None of the animals of dose group 160 mg/kg bw died.
- Clinical signs:
- other:
- Body weight:
- other body weight observations
- Remarks:
- There were no toxicological effects on body weight or body weight development in the surviving males and females.
- Gross pathology:
- Gross Pathology Findings
4000 mg/kg bw.:
stomach: fluid, gas-filled.
1000 mg/kg bw.:
stomach: consistency-changes light colored, partly reddening.
400 mg/kg bw.:
stomach: partly reddening, hemorrhagic watery fluid; lung: pale discolorations;
skin: black to blue discolorations of the treatment area, scars on the treatment area.
160 mg/kg bw.:
skin: scars on the treatment area.
Applicant's summary and conclusion
- Interpretation of results:
- Category 3 based on GHS criteria
- Conclusions:
- Based on the present investigations, HEC 5725-DCF-Pyrimidine is to be regarded to have the following LD50 values:
LD50 rat, male : 365 mg/kg body weight (235-567 mg/kg)
rat, female : 304 mg/kg body weight (212-435 mg/kg)
So it is regarded as low toxic after dermal application. - Executive summary:
In an acute dermal toxicity study according to OECD test guideline 402 (1987), groups of young adult males and female Wistar rats (5/sex) were dermally exposed to 4,6-dichlor-5-fluorpyrimidine (100 % a.i) for 24 hours to 10 % of body surface area at doses of 160, 400, 1000 and 4000 mg/kg bw. Animals then were observed for 21 days.
Dermal LD50 Males =365 mg/kg bw
Females = 304 mg/kg bw
4,6-dichlor-5-fluorpyrimidine is of low Toxicity based on the LD50 value for female Wistar rats. Animals of both high dose groups (1000 and 4000 mg/kg bw) died within 2 days. In all dose groups clinical signs related to treatment were observed corresponding to the findings during necropsy.
Based on the results the substance needs to be classified according to Regulation (EU) 1272/2008 (CLP) and the Globally Harmonized System for Calssification and Labelling of Chemicals (GHS) as acute toxic via the dermal route Castegory 3 “Toxic in contact to skin”.
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.
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