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EC number: 682-238-0 | CAS number: 1190931-27-1
- 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
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 20 December 2010 to 20 January 2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- Guideline-conform study under GLP.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling point/boiling range)
- Deviations:
- yes
- Remarks:
- Deviations are considered to have no impact on quality and integrity of the study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Deviations:
- yes
- Remarks:
- Deviations are considered to have no impact on quality and integrity of the study
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- method according to Siwoloboff
- Key result
- Atm. press.:
- ca. 1 005 hPa
- Decomposition:
- yes
- Decomp. temp.:
- ca. 138 °C
- Remarks on result:
- not determinable
- Remarks:
- The boiling point of test item c-C6O4-COONH4 could not be determined since the test item decomposes before boiling.
- Conclusions:
- The boiling point of test item cC6O4 ammonium salt could not be determined since the test item decomposes before boiling.
The beginning of the decomposition of the test item cC6O4 ammonium salt was determined to be at 411 K (138 °C) under an atmospheric pressure of 1005 hPa. - Executive summary:
The boiling point of cC6O4 ammonium salt (batch number:156/17) was determined according toOECD-Guideline No. 103 for Testing of Chemicals and to Council Regulation (EC) No. 440/2008 Method A.2 from 2010-12-21 to 2010-12-22 at Dr.U.Noack-Laboratorien, 31157 Sarstedt, Germany.
The approach for the determination of the boiling point of cC6O4 ammonium salt was performed with a capillary tube in a metal block apparatus at an atmospheric pressure of 1005 hPa.
During the testing a gas formation was observed at 138 °C. With respect to the test item structure a boiling at this low temperature was not expected. This consideration was verified by further heating of the test item above 138 °C. At 140 °C (constant for 35 min) the gas production decreased significantly, confirming the beginning of the thermal decomposition at 139 °C. At a temperature of approx. 200 °C intense decomposition with excessive release of gaseous decomposition products, resulting in a white to brown solid residue was observed.
Reference
Preliminary Test
In the preliminary test formation of gas at the boiling capillary was observed at 147.5 °C.
Decomposition Temperature
The test item melted to a turbid, milky-white liquid, which became colourless with uprising temperature. Small bubbles were observed beside the bigger bubbles rising from the boiling capillary, which could indicate decomposition or boiling. The results of two independent measurements of this point within±2 K are given in the following table:
Measured Decomposition Temperatures
(Atmospheric pressure of 1005 hPa)
Replicate No. |
2 |
3 |
Point of first bubbles rising1)[°C] |
137.6 |
137.1 |
Decomposition Temperature2)[°C] |
138.5 |
138.4 |
Mean Value [°C] |
138 |
|
Mean Value [K] |
411 |
1) Indicated visually
2) Automatically detected by the apparatus
To decide whether boiling or decomposition was observed, the test item was heated to 140 °C in duplicates and observed over a period of 35 min at constant temperature. Immediately formation of small bubbles in the clear, colourless liquid was observed. After approx. 6 min a white residue was observed at the meniscus of the liquid test item. The observed formation of gas bubbles was not constant; it changed from intense to very slight gas formation. Due to these observations the determined temperature was defined as beginning of decomposition.
For further clarification one sample of the test item was heated from 130 °C to 250 °C with a heating rate of 10 °C/min. The results and observations are given in the following table:
Observations of the test item decomposition
Approx. Temperature [°C] |
Observation |
> 150 |
Gas formation becomes more intense |
> 170 |
Continuous chain of bubbles |
> 190 |
Slight colour change of the liquid to brown |
> 200 |
Very intense gas formation |
> 210 |
Fume formation at top ofboiling point tube |
> 220 |
End of decomposition forming a white‑brownish solid residue |
Description of key information
The determination of the boiling point of the test item was performed according to the OECD Guideline 103 (Boiling point/boiling range) and the EU Method A.2 (Boiling Temperature).
The boiling point of test item cC6O4 ammonium salt could not be determined since the test item decomposes before boiling.
The beginning of the decomposition of the test item cC6O4 ammonium salt was determined to be at 411 K (138 °C) under an atmospheric pressure of 1005 hPa.
Key value for chemical safety assessment
- Temperature of decomposition (state purity):
- 138 °C
Additional information
The boiling point of test item cC6O4 ammonium salt could not be determined since the test item decomposes before boiling.
The beginning of the decomposition of the test item cC6O4 ammonium salt was determined to be at 411 K (138 °C) under an atmospheric pressure of 1005 hPa.
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