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Diss Factsheets
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EC number: 221-297-5 | CAS number: 3058-38-6
- 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
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- not specified
- Adequacy of study:
- weight of evidence
- Study period:
- no data
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Remarks:
- Data comes from a handbook, cited in a secondary source. The substance is adequately identified, but without purity.
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- No data
- Melting / freezing pt.:
- 350 °C
- Decomposition:
- yes
- Executive summary:
Some properties of TATB are presented in this publication, cited from a handbook. A melting point value of 350°C, with decomposition, is given for the substance.
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- no data
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- secondary literature
- Remarks:
- Data comes from a review publication, as a secondary source citing various references. Test conditions are not specified. The substance is adequately identified, but without purity. Therefore validity cannot be granted.
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- no data for most sources; a DSC thermogram is available, but test conditions are not specified
- Melting / freezing pt.:
- > 300 °C
- Decomposition:
- yes
- Decomp. temp.:
- >= 350 °C
- Executive summary:
Some properties of TATB are presented in this review publication, cited from various sources. No clear melting point value is given for the substance, decomposition occurs from 350°C.
- Endpoint:
- melting point/freezing point
- Type of information:
- not specified
- Adequacy of study:
- weight of evidence
- Study period:
- no data
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- secondary literature
- Remarks:
- Data comes from a publication, as a secondary source citing the raw value. Test conditions are not specified. The substance is adequately identified, but without purity. Therefore validity cannot be granted.
- Principles of method if other than guideline:
- no data
- Melting / freezing pt.:
- >= 594 - <= 599 K
- Executive summary:
A melting range of 321 - 326°C is cited for secondary source (raw data).
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- no data
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- secondary literature
- Remarks:
- Data comes from a review publication, as a secondary source citing various references. Test conditions are not specified. The substance is adequately identified, but without purity. Therefore validity cannot be granted.
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- no data for most sources; one of the result was determined with a capillary method
- Remarks on result:
- not determinable
- Executive summary:
Some properties of TATB are presented in this review publication, cited from various sources. No clear melting point value is given for the substance, which undergoes decomposition.
- Endpoint:
- melting point/freezing point
- Type of information:
- not specified
- Adequacy of study:
- weight of evidence
- Study period:
- no data
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Principles of method if other than guideline:
- no data
- Melting / freezing pt.:
- 350 °C
- Decomposition:
- yes
- Executive summary:
The handbook provides some physico-chemical properties on explosive substances. A melting point value of 350°C, with decomposition, is given for TATB.
Referenceopen allclose all
Lack of a distinct melting point.
There is strong evidence of inter-and intramolecular hydrogen bonds. These strong hydrogen bonds induce a strong dipole-dipole van der Waals–Keesom force and affect properties such as boiling and melting points, which are evident in TATB. [Agrawal, 1998]
Melts above 573 K but decomposes above 623.15 K [Meyer et al., 2002], 712 K [Toghiani et al., 2008].
The melting point as [Zeman, 1993], in his differential calorimetric studies on TATB and other compounds, found that TATB starts to decompose at different temperatures depending on the heating cycle. He also quotes a melting point of 603 K based on the work of [Bell et al., 1987].
TATB starts decomposing close to the melting point. [Agrawal, 1998, 2005]
The Differential Scanning Calorimetry (DSC) thermogram [Talawar et al., 2006] shows that TATB exothermic decomposing temperature lies between 360 and 390°C, with the maximum peak in 385°C, indicating its excellent thermal stability and heat resistance. No endotherm is observed.
Strong hydrogen bonding is indicated by the lack of a distinct melting point.
Jackson and Wing (1888) determined that TATB decomposes without melting at about 360°C.
In 1961, studies by Urizar at LANL indicated that TATB sublimed at >=300°C and decomposed without melting at 325 to 350°C, leaving a solid residue; TATB was not fusible. Others determined melting points at:
330°C (O’ Keefe and Gurule, 1977)
360°C, d = 1.934 g/cm3, (Taylor, 1956)
>370°C by Thomas Hoover Capillary Melting Point Apparatus with 2°/min heating rate (Kayser, 1983)
melting point: 350 °C = 600 °F (decomp.)
Description of key information
No melting up to 300°C, followed by decomposition.
Key value for chemical safety assessment
Additional information
No experimental study is available for the substance.
From several secondary literature sources, in a Weight-of-Evidence approach, the melting point is unclear, with values ranging between ca 320 and 390°C. However, no transition is observed below 300°C, and decomposition occurs above this temperature. Therefore, no key data is retained.
It should also be noted that conformational/structural changes may occur in TATB, which may explain the different values.
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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