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EC number: 444-090-3 | CAS number: 204848-45-3
- 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
Acute Toxicity: dermal
Administrative data
- Endpoint:
- acute toxicity: dermal
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 25-Oct-2002 to 13-Nov-2002
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: OECD guideline test, GLP compliance
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 003
- Report date:
- 2003
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 402 (Acute Dermal Toxicity)
- Version / remarks:
- adopted on 24th February 1987
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.3 (Acute Toxicity (Dermal))
- Version / remarks:
- 1996
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Test type:
- standard acute method
- Limit test:
- yes
Test material
- Reference substance name:
- -
- EC Number:
- 444-090-3
- EC Name:
- -
- Cas Number:
- 204848-45-3
- Molecular formula:
- C44 H43 N3 O4
- IUPAC Name:
- Propanoic acid, 2-[4-[4,6-bis([1,1'-biphenyl]-4-yl)-1,3,5-triazin-2-yl]-3-hydroxyphenoxy]-, isooctyl ester
Constituent 1
Test animals
- Species:
- rat
- Strain:
- other: Crl;CD BR
- Sex:
- male/female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Source: Charles River UK Ltd., Manston Road, Margate, Kent, England
- Age at study initiation: 8-12 weeks
- Weight at study initiation: 223-253 g
- Housing:
The rats were allocated without conscious bias to cages within the treatment group. They were housed individually in metal cages (RS Biotech Sub-Dividable Rodent Cages - polished stainless steel) until Day 11 when they were retumed to group housing. The cages were fitted with grid floors to ensure rapid removal of waste material to undertrays. The cages were suspended in mobile stainless steel racks.
- Diet: A standard laboratory rodent diet (Special Diet Services RMl(E) SQC expanded pellet) was provided ad libitum.
- Water: drinking water, ad libitum
- Acclimation period: 7 days
ENVIRONMENTAL CONDITIONS
- Temperature: 22 +/- 3 °C
- Humidity: 40-70%
- Photoperiod (hrs dark / hrs light): 12 hours dark / 12 hours light
IN-LIFE DATES: not indicated
Administration / exposure
- Type of coverage:
- occlusive
- Vehicle:
- other: 1 % (w/v) aqueous methylcellulose
- Details on dermal exposure:
- TEST SITE
- Area of exposure: approximately 50 mm x 50 mm
- % coverage: approximately 10% of the total body surface area
- Type of wrap if used: porous gauze held in place with a non-irritating dressing, further covered by a waterproof dressing encircled firmly around the trunk of the animal (occlusive coverage)
REMOVAL OF TEST SUBSTANCE
- Washing: with warm water (30 - 40°C). The treated area was then blotted dry with absorbent paper.
- Time after start of exposure: 24 hours
TEST MATERIAL
- Concentration: 55.56% w/v in 1% w/v aqueous methylcellulose and administered
- Constant volume or concentration used: yes; at a dose volume of 3.60 mL/kg
VEHICLE
- Amount(s) applied : 1 mL/100 mL
- Concentration: 1% w/v aqueous methylcellulose - Duration of exposure:
- 24 hours
- Doses:
- 2000 mg/kg bw
- No. of animals per sex per dose:
- 10 animals, 5 males and 5 females
- Control animals:
- yes
- Details on study design:
- - Duration of observation period following administration:
14 days after dosing. Dosing day = day 1
- Frequency of observations and weighing:
Animals were observed soon after dosing and at frequent intervals for the remainder of Day 1. On subsequent days, animals were observed once in the morning and again at the end of the experimental day (with the exception of Day 15 - morning only). The nature and severity of the clinical signs and time were recorded at each observation. The bodyweight of each rat was recorded on Days 1 (prior to dosing), 8 and 15. Individual weekly bodyweight changes and group mean bodyweights were calculated.
- Necropsy of survivors performed: yes; all animals were subjected to a macroscopic examination which consisted of opening the thoracic and abdominal cavities. The macroscopic appearance of all tissues was recorded. - Statistics:
- Group mean bodyweights were calculated
Results and discussion
Effect levels
- Sex:
- male/female
- Dose descriptor:
- LD50
- Effect level:
- > 2 000 mg/kg bw
- Based on:
- test mat.
- Mortality:
- There were no deaths following a single dermal application of the test item to a group of ten rats (five males and five females) at a dose level of 2000 mg/kg bodyweight.
- Clinical signs:
- Clinical signs were confined to a swollen right forepaw in one male. This was due to the animal trapping its front right forepaw in the divider between cages on Day 10 and was therefore not attributable to treatment. No clinical signs were seen in the remaining four males and five females for the duration of the study.
- Body weight:
- All animals were considered to have achieved satisfactory bodyweight gains throughout the study.
- Gross pathology:
- Macroscopic examination at study termination revealed congestion (characterised by darkened tissue/organs) of the liver in one male and white swellings on the kidneys in another male. No abnormalities were revealed in the remaining animals.
- Other findings:
- - Other observations:
Very slight to well-defined dermal irritation (Grade 1 or 2 erythema and/or Grade 1 or 2 oedema) was observed in three males and two females following removal of the dressings, resolving completely by Day 9. No dermal irritation was noted in the remaining five animals throughout the study. In addition, chemical burn (one male and one female), loss of elasticity (two females), skin damage at bandage removal (two males), yellow test substance staining (which did not impair assessment of erythema) (all animals), dose residue (which did not impair assessment of erythema) (all animals), spots and/or scabbing (over the majority of the treatment site)(one male) and spots and/or scabbing (confined to a small area of the dose site) (one male and two females) were noted from removal of the dressings, resolving completely by Day 11.
Applicant's summary and conclusion
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- The acute lethal dermal dose of the test substance to rats was demonstrated to be greater than 2000 mg/kg bodyweight.
- Executive summary:
A GLP-compliant acute dermal toxicity study according to OECD TG 402 was performed to determine the acute lethal dose of the test substance after dermal administration. A group of ten rats (five males and five females) received a single topical application of the test substance, formulated at a maximum practical concentration in 1% w/v aqueous methylcellulose, at dose level of 2000 mg/kg bodyweight, for a duration of 24 hours. All animals were killed and examined macroscopically on Day 15, the end of the observation period. Very slight to well-defined irritation (Grade 1 or 2 erythema and/or Grade 1 or 2 oedema) was observed in five animals following removal of the dressings, resolving completely by Day 9. No dermal irritation was noted in the remaining five animals throughout the study. All animals were considered to have achieved satisfactory bodyweight gains throughout the study. Macroscopic examination at study termination on Day 15 revealed congestion (characterised by darkened tissue/organs) of the liver in one male and white swellings on the kidneys in another male. These findings are of single character and are not considered to be treatment related. No abnormalities were revealed in the remaining animals. As result, the acute lethal dermal dose of the test substance was demonstrated to be greater than 2000 mg/kg bodyweight in rats.
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