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EC number: 277-459-0 | CAS number: 73398-89-7
- 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
Endpoint summary
Administrative data
Description of key information
Acute oral toxicity:Under the conditions of the study, the oral LD50 value of the test material in Wistar rats was established to be within the range of 50 to 300 mg/kg body weight.
Key value for chemical safety assessment
Acute toxicity: via oral route
Link to relevant study records
- Endpoint:
- acute toxicity: oral
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 14 September 2016 to 06 October 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 423 (Acute Oral toxicity - Acute Toxic Class Method)
- Version / remarks:
- 2001
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.1 tris (Acute Oral Toxicity - Acute Toxic Class Method)
- Version / remarks:
- 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 870.1100 (Acute Oral Toxicity)
- Version / remarks:
- 2002
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: JMAFF 12 Nousan, Notification No 8147
- Version / remarks:
- 2000, including the most recent partial revisions
- Deviations:
- no
- GLP compliance:
- yes
- Test type:
- acute toxic class method
- Limit test:
- no
- Species:
- rat
- Strain:
- Wistar
- Sex:
- female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Strain: Crl:WI (Han) (outbred, SPF-Quality)
- Females (if applicable) nulliparous and non-pregnant: Yes
- Age at study initiation: Young adult animals (approximately 8 weeks old)
- Weight at study initiation: 152 to 172 g (mean 159 g). Body weight variation did not exceed ± 20 % of the sex mean.
- Fasting period before study: Yes. Animals were deprived of food overnight prior to dosing and until 3 to 4 hours after administration of the test material. Water was available ad libitum.
- Housing: Group housing of 3 animals per cage in labelled cages (height 18 cm) containing sterilised sawdust as bedding material and paper as cage-enrichment
- Diet: ad libitum pelleted rodent diet
- Water: ad libitum
- Acclimation period: At least 5 days
ENVIRONMENTAL CONDITIONS
- Temperature: 18 to 24 °C
- Humidity: 40 to 70 % (relative)
- Air changes: At least 10 air changes/hour
- Photoperiod: 12-hour light/12-hour dark cycle
IN-LIFE DATES: Not reported - Route of administration:
- oral: gavage
- Vehicle:
- water
- Details on oral exposure:
- VEHICLE
- Concentration in vehicle: The concentration of the test material in vehicle was varied to allow constant dosage volume in terms of mL/kg body weight.
- Justification for choice of vehicle: The vehicle was selected based on trial preparations performed at the testing facility and on test material data supplied by the sponsor.
MAXIMUM DOSE VOLUME APPLIED: 10 mL/kg
DOSAGE PREPARATION: The preparations (w/w) were kept at room temperature and were dosed within 4 hours after adding the vehicle to the test material. Homogeneity was assessed by visual inspection of the solutions and the formulations were stirred during dosing, which ensures homogeneity sufficient for these kinds of studies. No correction was made for purity of the test material.
CLASS METHOD (if applicable)
- Dosing pattern: The toxicity of the test material was assessed by step-wise treatment of three animals. The first group was treated at a dose level of 300 mg/kg. The absence or presence of mortality of animals dosed at one step determined the next step, based on the test procedure defined in the guidelines. The onset, duration and severity of the signs of toxicity were taken into account for determination of the time interval between the dose groups. - Doses:
- 300 and 50 mg/kg body weight
- No. of animals per sex per dose:
- 3 animals per sex per dose group (1 and 2 groups for the 300 and 50 mg/kg dose levels, respectively)
- Control animals:
- no
- Details on study design:
- - Duration of observation period following administration: 15 days
- Frequency of observations and weighing: Animals were observed for mortality/viability twice daily. Body weights were recorded on Days 1 (pre-administration), 8 and 15. Clinical signs were observed at periodic intervals on the day of dosing (Day 1) and once daily thereafter until Day 15. The signs were graded according to fixed scales and the time of onset, degree and duration were recorded.
- Necropsy of survivors performed: Yes. The moribund animals and animals surviving to the end of the observation period were sacrificed by oxygen/carbon dioxide procedure and subjected to necropsy. Descriptions of all internal macroscopic abnormalities were recorded. - Statistics:
- No statistical analysis was performed (the method used is not intended to allow the calculation of a precise LD50 value).
- Preliminary study:
- not perfomed
- Key result
- Sex:
- female
- Dose descriptor:
- LD50
- Effect level:
- > 50 - < 300 mg/kg bw
- Based on:
- test mat.
- Mortality:
- At 300 mg/kg, all animals were found dead on Day 1. At 50 mg/kg, no mortality occurred.
- Clinical signs:
- other: At 300 mg/kg, salivation was noted for two out of three animals on Day 1. At 50 mg/kg, hunched posture, shallow respiration, piloerection and/or ptosis was noted for all animals between Days 1 and 5. Purple discoloration of the left leg, right leg, tail o
- Gross pathology:
- Macroscopic post mortem examination of animals did not reveal any abnormalities related to the toxicity of the test material. Purple discolouration of the tongue, stomach, small intestines and/or contents of the trachea were found in the animals that were found dead during the study, at macroscopic post mortem examination. This was considered to be caused by the staining properties of the test material.
- Other findings:
- The oral LD50 value was established to be within the range of 50 to 300 mg/kg body weight. According to the OECD 423 test guideline, the LD50 cut-off value was considered to be 200 mg/kg body weight.
- Interpretation of results:
- other: Classified as Category 3 in accordance with EU criteria
- Conclusions:
- Under the conditions of the study, the oral LD50 value of the test material was established to be within the range of 50 to 300 mg/kg body weight.
- Executive summary:
The acute oral toxicity potential of the test material to the rat was investigated in accordance with the standardised guidelines OECD 423, EU Method B1 tris, US EPA OPPTS 870.1100 and JMAFF 12 Nousan Notification No 8147 under GLP conditions using the Acute Toxic Class Method.
Initially, the test material was administered by oral gavage to three female Wistar rats at 300 mg/kg body weight. In a stepwise procedure two additional groups of three females were dosed at 50 mg/kg body weight. All animals were subjected to daily observations and weekly determination of body weight. Macroscopic examination was performed on the day of death or after terminal sacrifice (Day 15).
At 300 mg/kg, all animals were found dead on Day 1. At 50 mg/kg, no mortality occurred. At 300 mg/kg, salivation was noted for two out of three animals on Day 1. At 50 mg/kg, hunched posture, shallow respiration, piloerection and/or ptosis was noted for all animals between Days 1 and 5. The mean body weight gain shown by the animals over the study period was considered to be normal. Macroscopic post mortem examination of animals did not reveal any abnormalities related to the toxicity of the test material.
Under the conditions of the study, the oral LD50 value of the test material in Wistar rats was established to be within the range of 50 to 300 mg/kg body weight. In accordance with the OECD 423 test guideline, the LD50 cut-off value was considered to be 200 mg/kg body weight.
Reference
Endpoint conclusion
- Endpoint conclusion:
- adverse effect observed
- Dose descriptor:
- LD50
- Value:
- 50 mg/kg bw
- Quality of whole database:
- One study is available, conducted in accordance with standardised guidelines under GLP conditions. The quality of the database is therefore considered to be high.
Acute toxicity: via inhalation route
Endpoint conclusion
- Endpoint conclusion:
- no study available
Acute toxicity: via dermal route
Endpoint conclusion
- Endpoint conclusion:
- no study available
Additional information
The acute oral toxicity potential of the test material to the rat was investigated in accordance with the standardised guidelines OECD 423, EU Method B1 tris, US EPA OPPTS 870.1100 and JMAFF 12 Nousan Notification No 8147 under GLP conditions using the Acute Toxic Class Method. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).
Initially, the test material was administered by oral gavage to three female Wistar rats at 300 mg/kg body weight. In a stepwise procedure two additional groups of three females were dosed at 50 mg/kg body weight. All animals were subjected to daily observations and weekly determination of body weight. Macroscopic examination was performed on the day of death or after terminal sacrifice (Day 15).
At 300 mg/kg, all animals were found dead on Day 1. At 50 mg/kg, no mortality occurred. At 300 mg/kg, salivation was noted for two out of three animals on Day 1. At 50 mg/kg, hunched posture, shallow respiration, piloerection and/or ptosis was noted for all animals between Days 1 and 5. The mean body weight gain shown by the animals over the study period was considered to be normal. Macroscopic post mortem examination of animals did not reveal any abnormalities related to the toxicity of the test material.
Under the conditions of the study, the oral LD50 value of the test material in Wistar rats was established to be within the range of 50 to 300 mg/kg body weight. In accordance with the OECD 423 test guideline, the LD50 cut-off value was considered to be 200 mg/kg body weight.
Justification for classification or non-classification
In accordance with the criteria for classification as defined in Annex I, Regulation (EC) No 1272/2008, the substance does not require classification with respect to acute toxicity via the oral route.
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