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EC number: 257-479-6 | CAS number: 51858-17-4
- 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
Flammability
Administrative data
- Endpoint:
- self-heating substances / mixtures
- Type of information:
- experimental study
- Adequacy of study:
- key study
- 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:
- other: UN Test N.4, Class 4, Division 4.2
- Version / remarks:
- 2015
- Qualifier:
- according to guideline
- Guideline:
- other: VDI 2263, sheet 1, Grewer-Oven
- Version / remarks:
- 1990
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Dipotassium dihydrogen 4-[5-[3-carboxylato-5-hydroxy-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]penta-2,4-dienylidene]-4,5-dihydro-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate
- EC Number:
- 257-479-6
- EC Name:
- Dipotassium dihydrogen 4-[5-[3-carboxylato-5-hydroxy-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]penta-2,4-dienylidene]-4,5-dihydro-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate
- Cas Number:
- 51858-17-4
- Molecular formula:
- C25H16N4O12S2.2K
- IUPAC Name:
- dipotassium dihydrogen 4-{5-[3-carboxylato-5-oxo-1-(4-sulfonatophenyl)-1,5-dihydro-4H-pyrazol-4-ylidene]penta-1,3-dien-1-yl}-5-hydroxy-1-(4-sulfonatophenyl)-1H-pyrazole-3-carboxylate
- Test material form:
- solid: crystalline
Constituent 1
Results and discussion
Self-heating substances / mixturesopen allclose all
- Key result
- Test procedure:
- other: Self-ignition in the Grewer-Oven
- Remarks:
- Experiment with pure test item and onset self-ignition temperature of about 120 °C
- Max. temp. reached:
- 310
- Induction time (h):
- 24
- Result:
- positive outcome (effect observed)
- Key result
- Test procedure:
- 100 mm sample cube at 140°C
- Induction time (h):
- 14
- Result:
- positive outcome (effect observed)
- Key result
- Test procedure:
- 25 mm sample cube at 140°C
- Induction time (h):
- 48
- Result:
- negative outcome (no effect observed)
- Key result
- Test procedure:
- 100 mm sample cube at 120°C
- Induction time (h):
- 36
- Result:
- negative outcome (no effect observed)
Any other information on results incl. tables
Self-ignition in the Grewer-Oven
In the investigation of self-ignition in the Grewer-Oven for the pure test item an endothermic effect could be detected in the temperature range of approx. 60 to 90 °C, followed by an exothermic self-ignition/self-heating starting at approx. 120 °C and leading to a maximum temperature of approx. 310 °C.
For the test item in mixture with Kieselguhr also an endothermic effect could be detected in the temperature range of approx. 50 to 60 °C, followed by an exothermic self-ignition/self-heating starting at approx. 160 °C and leading to a maximum temperature of approx. 325 °C. See summary table below:
Experiment |
Onset self-ignition / °C |
Maximum temperature / °C |
Pure test item |
Approx. 120 |
310 |
Test item in mixture with Kieselguhr (1:1) |
Approx. 160 |
325 |
Bowes-Cameron-Cage Test (UN Test N.4)
140 °C, 100 mm cube sample
The temperature in the centre of the sample exceeded the oven temperature of about 240 K within approximately 14 hours. Due to the positive result in the 100 mm cube sample at an oven temperature of 140 °C further tests had to be performed.
140 °C, 25 mm cube sample
The temperature in the centre of the sample did not exceed the oven temperature within 48 hours. Due to the negative result in the 25 mm cube sample at an oven temperature of 140 °C further tests had to be performed.
120 °C, 100 mm cube sample
The temperature in the centre of the sample did not exceed the oven temperature within 36 hours. Due to the negative result in the 100 mm cube sample at an oven temperature of 120 °C no further tests had to be performed.
Final results/Classification
In the Grewer oven the test item showed a self-ignition temperature of 120 °C. The test in the 1 L wire basket at 140 °C showed a self-ignition of the test item with a temperature increase of > 60 °C within 24 hours.
The test in the 15.625 mL wire basket at 140 °C showed no self-ignition of the test item within 24 hours.
The test in the 1 L wire basket at 120 °C showed no self-ignition of the test item within 24 hours.
According to the results of the tests on the self-ignition in the Bowes-Cameron-Cage Tests (UN Test N.4) the test item is classified as follows:
UN Transport Regulation: The test item is not classified as self-heating substance in class 4, division 4.2 according to the UN Transport Regulation, if the test item is handled in containers with a volume of < 3 m3.
If the test item is handled in containers > 3 m3it is classified as self-heating substance in class 4, division 4.2 and assigned to packing group III.
GHS / CLP Regulation EC 1272/2008 Annex 1: 2.11: The test item is not classified as self-heating substance according to GHS/CLP Regulation EC 1272/2008 Annex 1: 2.11, respectively, if the test item is handled in containers with a volume of < 3 m3.
If the test item is handled in containers > 3 m3, it must be classified as a self-heating substance and assigned to category 2.
Applicant's summary and conclusion
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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