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EC number: 287-722-1 | CAS number: 85567-10-8
- 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: oral
Administrative data
- Endpoint:
- acute toxicity: oral
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2016-2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 423 (Acute Oral toxicity - Acute Toxic Class Method)
- Version / remarks:
- adopted 17 December 2001
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.1 tris (Acute Oral Toxicity - Acute Toxic Class Method)
- Version / remarks:
- May 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 870.1100 (Acute Oral Toxicity)
- Version / remarks:
- EPA 712-C-02-190, December 2002
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: Procedures and facilities comply with the requirements of Directive 2010/63/EU and the national legislation defined in the animal protection law concerning the protection of animals used for experimental and other scientific procedures
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Test type:
- acute toxic class method
- Limit test:
- yes
Test material
- Reference substance name:
- 4,5-dihydro-5-oxo-4-[[4-[[2-(sulphooxy)ethyl]sulphonyl]phenyl]azo]-1-(4-sulphophenyl)-1H-pyrazole-3-carboxylic acid, sodium salt
- EC Number:
- 287-722-1
- EC Name:
- 4,5-dihydro-5-oxo-4-[[4-[[2-(sulphooxy)ethyl]sulphonyl]phenyl]azo]-1-(4-sulphophenyl)-1H-pyrazole-3-carboxylic acid, sodium salt
- Cas Number:
- 85567-10-8
- Molecular formula:
- C18H13N4Na3O12S3
- IUPAC Name:
- trisodium 5-oxo-4-(2-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}diazen-1-yl)-1-(4-sulfonatophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylate
- Test material form:
- solid
Constituent 1
Test animals
- Species:
- rat
- Strain:
- other: WISTAR Crl: WI(Han)
- Sex:
- female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Age at study initiation: 8-12 weeks old
- Weight at day of admnistration: step 1: 165 – 198 g; step 2: 156 – 173 g
- Fasting period before study: Prior to the administration food was withheld from the test animals for 16 to 19 hours (access to water was permitted). Following the period of fasting the animals were weighed and the test item was administered. Food was provided again approximately 4 hours post dosing.
- Housing: The animals were kept in groups in IVC cages, type III H, polysulphone cages on Altromin saw fibre bedding
- Diet (e.g. ad libitum): Free access to Altromin 1324 maintenance diet for rats and mice
- Water (e.g. ad libitum): Free access to tap water, sulphur acidified to a pH value of approximately 2.8 (drinking water, municipal residue control, microbiological controls at regular intervals)
- Acclimation period: Adequate acclimatisation period (at least five days) under laboratory conditions
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 22 ± 3 °C
- Humidity (%): 55 ± 10%
- Air changes (per hr): 10 x / hour
- Photoperiod (hrs dark / hrs light): 12/12
IN-LIFE DATES:
From: Acclimatisation Period:
Step 1, animals no. 1 - 3: 17 November 2016 to 29 November 2016
Step 2, animals no. 4 - 6: 29 November 2016 to 05 December 2016
To: 20 December 2016
Administration / exposure
- Route of administration:
- oral: gavage
- Vehicle:
- other: aqua ad injectionem
- Details on oral exposure:
- VEHICLE
- Amount of vehicle (if gavage): 2 g of the test item was dissolved in the vehicle to gain a final volume of 10 mL and to achieve a dose of 2000 mg/kg body weight at a dose volume of 10 mL/kg body weight.
- Justification for choice of vehicle: In order to get the test item in a solution or suspension, which is applicable to the animals, aqua ad injectionem was evaluated as vehicle and was considered to be adequate. This vehicle was chosen due to its non-toxic characteristics.
- Lot/batch no. (if required): AlleMan Pharma, lot no. 605070, expiry date: 04/2019
MAXIMUM DOSE VOLUME APPLIED: The test item was administered at a dose volume of 10 mL/kg body weight.
DOSAGE PREPARATION (if unusual): The test item was weighed out into a tared plastic vial on a precision balance.
Homogeneity of the test item in the vehicle was maintained by vortexing the prepared suspension thoroughly before each dose administration.
For all animals of the first and second step, 2 g of the test item was dissolved in the vehicle to gain a final volume of 10 mL and to achieve a dose of 2000 mg/kg body weight at a dose volume of 10 mL/kg body weight.
The dose formulations were made shortly before each dosing occasion.
CLASS METHOD (if applicable)
- Rationale for the selection of the starting dose: The starting dose was selected to be 2000 mg/kg body weight. According to OECD 423 guideline, when available information suggests that mortality is unlikely at highest starting dose level (2000 mg/kg), then a limit test should be conducted. The provided safety data sheet of the sponsor indicated no toxicity at the highest starting dose level. - Doses:
- 2000 mg/kg bw
- No. of animals per sex per dose:
- 3 per step / 2 steps performed
- Control animals:
- no
- Details on study design:
- - Duration of observation period following administration: 14 days
- Frequency of observations and weighing:
All animals were observed for 14 days after dosing for general clinical signs, morbidity and mortality. A careful clinical examination was made several times on the day of dosing (at least once during the first 30 minutes and with special attention given during the first 4 hours post-dose). Thereafter, the animals were observed for clinical signs once daily until the end of the observation period.
Cageside observations included changes in the skin and fur, eyes and mucous membranes. Also respiratory, circulatory, autonomic and central nervous systems and somatomotor activity and behaviour pattern were examined. Particular attention was directed to observations of tremor, convulsions, salivation, diarrhoea, lethargy, sleep and coma.
The animals were weighed on day 1 (prior to the administration) and on days 8 and 15.
- Necropsy of survivors performed: yes
- Other examinations performed: clinical signs, body weighgross pathological changes. In the absence of gross pathological changes no tissues were preserved for a possible histopathological evaluation.
Results and discussion
Effect levels
- Key result
- Sex:
- female
- Dose descriptor:
- LD50 cut-off
- Based on:
- test mat.
- Remarks on result:
- other: no mortality at limit dose of 2000 mg/kg bw
- Mortality:
- The test item showed no mortality after a single dose administration.
- Clinical signs:
- other: The test item showed no mortality and no other acute oral toxicity characteristics after a single dose administration.
- Gross pathology:
- With the exception of acute injection of blood vessels in the abdominal region, which is due to the euthanasia injection, no specific gross pathological changes were recorded for any animal.
Applicant's summary and conclusion
- Interpretation of results:
- other: No classification required according to regulaation (EC) No. 1272/2008
- Conclusions:
- Under the conditions of the present study, a single oral application of the test item to rats at a dose of 2000 mg/kg body weight was associated with no signs of toxicity or mortality.
The median lethal dose of the test item after a single oral administration to female rats, observed over a period of 14 days is: LD50 cut-off (rat): ∞
According to Annex I of Regulation (EC) 1272/2008 the test item has no obligatory labelling requirement for toxicity and is not classified. - Executive summary:
Two groups, each of three female WISTAR Crl: WI(Han) rats, were treated with the test item by oral gavage administration at a dosage of 2000 mg/kg body weight (limit test). The test item was dissolved in aqua ad injectionem (sterile water) at a concentration of 0.2 g/mL and administered at a dose volume of 10 mL/kg.
All animals used in the study after their entrance at BSL were allowed to acclimatise to the laboratory conditions for at least 5 days. The animals were observed on delivery, on inclusion in the study and before administration for mortality/morbidity and other clinical signs. All animals were examined for clinical signs several times on the day of dosing and once daily until the end of the observation period. Their body weights were recorded on day 1 (prior to the administration) and on days 8 and 15. All animals were necropsied and examined macroscopically.
All animals survived until the end of the study without showing any test-item related signs of toxicity.
Throughout the 14-day observation period, the body weight gain of the test animals was within the normal range of variation for this strain.
At necropsy, no treatment-related macroscopic findings were observed in any animal of any step.
On the basis of the test results given below and in conformity with the criteria given in Annex I of Regulation (EC) 1272/2008, the substance should not be classified.
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