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Diss Factsheets
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EC number: 664-406-5 | CAS number: 277319-62-7
- 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
Auto flammability
Administrative data
- Endpoint:
- relative self-ignition temperature (solids)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 008
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- other: VDI 2263
- Qualifier:
- according to guideline
- Guideline:
- other: Test C.1 of the Manual of Test and Criteria (Recommendations on Transport of Dangerous Goods)
- GLP compliance:
- no
Test material
- Reference substance name:
- 4-amino-N-hydroxybenzene-1-carboximidamide
- EC Number:
- 664-406-5
- Cas Number:
- 277319-62-7
- Molecular formula:
- C7 H9 N3 O
- IUPAC Name:
- 4-amino-N-hydroxybenzene-1-carboximidamide
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
Constituent 1
Results and discussion
Relative self-ignition temperature (solids)
- Key result
- Relative self-ignition temperature:
- 90 °C
- Remarks on result:
- other: SADT (50 kg packaging)
Any other information on results incl. tables
In the test of the auto ignition according to the Grewer method with the pure product a spontaneous combustion occurred above a temperature of 160°C. The decomposition took place in a one-step reaction, which resulted in a temperature increase to > 300°C. From 300°C, a further slow exothermic reaction is registered. Because the same behaviour was observed in the DSC under closed conditions, it can be concluded, that it is more likely caused by decomposition than by oxidation.
The product deflagrates at ambient conditions at an elevated temperature of 70 ° C in the presence of a high-energy ignition source (for example, access by a hot running bearing).
However, the deflagration causes only a small pressure increase. The gas evolution rate, per 1000 kg product at ambient conditions (1 bar abs) 450 m3/h, is very low. The calculation of the evolution rate is based on conservative assumptions.
If the gas volume caused by deflagration can be exhausted in a controlled manner, an unsafe pressure buildup by a progressive reaction must not be considered.
This must be to be carefully assessed. By release of the gas, the deflagration is not stopped, but the speed of deflagration is simply limited. Additionally it has to be considered, that the hot decomposition products of the deflagration can act as an ignition source for a dust explosion. Therefore, special measures, as e.g. inerting, are required for this purpose. This does not prevent the deflagration but decreases the risk of an explosion. It is strongly recommended to avoid accumulations of dry product. It should be ensured, that the product is cold, before it is packed and brought into the storehouse.
Applicant's summary and conclusion
- Conclusions:
- The substance should be classified as self-heating substance according to the CLP-regulation. The substance has significant deflagratory properties and is thermally unstable. This has to be considered in a safety concept
for the handling of the substance. The investigations show that the thermal stability is not lowered by the presence of atmospheric oxygen. As a limit temperature for the safe handling the temperature of 85°C, derived
from the thermal stability limit temperature Texo = AZT24 -10 K, should not be exceeded, regardless whether the substance is handled under inert atmosphere (e.g. nitrogen) or not. For storage over extended periods
(for example, days or weeks) lower limit temperatures of 50°C (due to labor protection reasons) should be applied. Due to an SADT of 90°C for storage in 50 kg containers, temperature control and cooling for transport
and storage is not required. However, this temperature can not be used for bulk storage in large amounts (e.g. in silos).
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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