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Diss Factsheets
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EC number: 209-143-5 | CAS number: 556-88-7
- 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
Link to relevant study record(s)
- Endpoint:
- relative self-ignition temperature (solids)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- september 1997 - march 1998
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.16 (Relative Self-Ignition Temperature for Solids)
- Deviations:
- yes
- Remarks:
- slightly different test method
- Principles of method if other than guideline:
- Instead of a temperature-programmed laboratory oven an electrical heated block out of non-rusting steal according to Grewer is used. The bottom hollow part is filled with small copper pipe areas. Air is blowing out of these coper pipes. The warmed air is ascending through boreholes into the upper part and blows through and around the wire mesh made out of stainless steel (diameter 1.5 cm, height 3 cm, volume 5cm3) where approx. 10 g of the test substance is located.
Fine graphite is used in a second wire mesh cube as a reference substance for temperature control measurement. In each wire mesh cube a thermoelement measures the temperature of the substance, while the data is transferred to a PC. - GLP compliance:
- not specified
- Key result
- Remarks on result:
- other: An exothermal reaction was observed at 216 °C where the test substance decomposed. Therefore it is concluded that nitroguanidine decomposes prior to self ignition.
- Conclusions:
- An exothermal reaction is observed at 216 °C where the test substance decomposed.
- Executive summary:
The test was conducted according to a similar method as described in guidance A.16.
The test substance was dried before the test. An endothermal reaction was observed at 45 °C.
An exothermal reaction was observed at 216 °C where the test substance decomposed.
Therefore it is concluded that nitroguanidine decomposes prior to self ignition.
- Endpoint:
- relative self-ignition temperature (solids)
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- The self ignition temperature is investigated by constant heating leading to constant rising temperatures of the testing material until 360 °C. Smaller amounts (0.5 /in case of very explosive substances 0.1 g or less) are filled in test tubes (outside diameter 16mm, length 120mm). A half bowl made of steel filled with a metal mixture (50% Bi, 25%Pb, 12.5% Cd, 12.5% Sn) serves for heating. The test tubes are put 2 cm deep into the metal liquid which is preheated to 100 °C. Temperatures is rised by 20 °C per minute via a propan burner from the bottom side. There are three samples investigated simultaneously. The ignition temperature is defined as the temperature where all three samples ignite, explode or deflagrate. It is noted if the test material vaporizes wihtout a flame or decomposes.
- GLP compliance:
- not specified
- Specific details on test material used for the study:
- Test substance supplier Nigu Chemie GmbH
- Remarks on result:
- other: decomposition without ignition
- Conclusions:
- The test substance decomposes between 230-240 °C.
- Executive summary:
The test results and the appropriate methods were published in the same source but not simultaneously. However, within the publications it is explicitly referred to that these methods were developed and the appropriate results are shown in a separate publication.
The study is conducted according to the method described by the German Federal Institute for Material Testing stated in this study. Nitroguanidine decomposes between 230-240 °C therefore no self-ignition temperature can be assigned.
Referenceopen allclose all
At 45 °C an endorthermal reaction was observed. At 216 °C the test substance decomposed in an exothermal reaction.
The test substance decomposes completely between 230-240 °C.
Description of key information
There are two studies available for this endpoint. Both indicate that the substance decomposes prior to self ignition.
Key value for chemical safety assessment
Additional information
The key study was conducted according to a similar method as described in guidance A.16.
The test substance was dried before the test. An endothermal reaction was observed at 45 °C.
An exothermal reaction was observed at 216 °C where the test substance decomposed prior to self ignition.
The supporting study was conducted according to a method developed by the German Federal Institute for Material Testing (BAM). It also concludes that the substance decomposes prior to self ignition. The temperature range for decomposition is between 230-240 °C. The variance (230-240 °C to 216 °C) is very likely explanable due to the more precise measuring technique used nowadays. The variance is not impairing the overall conclusion of the key information.
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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