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EC number: 828-215-2 | CAS number: 172796-84-8
- 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
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- The study was conducted between 12 September 2018 and 17 November 2018.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
- Report date:
- 2019
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- phosphonic acid, [2-(4-aminophenyl)-1-hydroxyethylidene]bis-, monosodium salt
- EC Number:
- 828-215-2
- Cas Number:
- 172796-84-8
- Molecular formula:
- C8H12NO7P2Na
- IUPAC Name:
- phosphonic acid, [2-(4-aminophenyl)-1-hydroxyethylidene]bis-, monosodium salt
- Reference substance name:
- 4-aminophenylacetic acid
- EC Number:
- 214-828-7
- EC Name:
- 4-aminophenylacetic acid
- Cas Number:
- 1197-55-3
- Molecular formula:
- C8H9NO2
- IUPAC Name:
- 4-aminophenylacetic acid
- Reference substance name:
- EBP dimer
- Molecular formula:
- C16H22N2O12P4
- IUPAC Name:
- EBP dimer
- Test material form:
- solid: particulate/powder
Constituent 1
impurity 1
impurity 2
- Specific details on test material used for the study:
- Identification: Phosphonic acid, [2-(4-aminophenyl)-1-hydroxyethylidene]bis-, monosodium salt (“EBP”)
Appearance/Physical state: Beige colored powder
Batch: CHPC071917EBP
Purity: > 90%
Expiry date: 01 July 2019
Storage conditions: Room temperature in the dark
Results and discussion
Melting / freezing point
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- 220 °C
- Remarks on result:
- not determinable
Any other information on results incl. tables
Thermal Analysis
Determination 1
Loss on heating: 37%
Determination 2
Loss on heating: 35%
Determination 3
Loss on heating: 33%
Determination 4
Loss on heating: 33%
Atmospheric pressure: 100.0 kPa
Overall result: Decomposed from approximately 240 °C (513 K)
Visual Evaluation -Modified Liquid Bath
Significant sample observations and temperatures are summarized in the following table:
Visual Evaluation on Heating
Temperature (°C) |
Observation |
26 |
Test item is a very pale yellow fine powder. |
165 |
Small amount of shrinkage, barely visible. |
220 |
Test item has darkened slightly, still a pale yellow fine powder. |
231 |
Test item continues to darken, now a beige fine powder. |
235 |
Black tar like material at base of test item. Test item is melting into a wax-like dark brown mass with black, tar-like material where test item touches the glass. Large amount of shrinkage, which occurred very quickly (a few seconds). Small amounts of brown powder can be seen. |
245 |
Test item is now is black, near spherical mass of wax-like material which contains brown globules, possibly bubbles or brown powder. Some brown powder on the surface. |
255 |
Test item is expanding up the tube, then gas being released and test item collapsing back down, happening repeatedly. Test item on surface of glass is now dark brown (with a slightly red hue). |
275 |
Test item has now expanded (as it tends to only partly collapse each time) to ~ 25 mm in height. Test item is very dark brown with a red hue. |
281 |
Column still expanding (~ 30 mm now). The test item on the glass surface is now full of “holes” from the bubbles. Cannot determine if bubbles are still forming. |
283 |
Column is now hollow due to bubbles popping. Column is no longer expanding, bottom ~ 10 mm is almost free of test item, only very small patches left on the glass as a very dark brown liquid. |
290 |
All except the top ~ 5 mm of test item contaminated area of the tube has only small dark brown/black liquid patches and bubbles on the glass. Top 5 mm has a mass of test item forming, popping and re-forming; this is also a dark brown/black liquid. |
302 |
Many tiny bubbles have formed in the test item on the side of the glass, giving an appearance of white patches among the dark brown/black liquid. The mass of test item at the top has reduced to only covering part of the diameter of the tube. Testing halted. |
Result: Decomposed from approximately 220 °C (513 K)
Applicant's summary and conclusion
- Conclusions:
- The test item has been determined to decompose from approximately 220 °C (493 K). As the test item decomposed, no values for melting/freezing point and boiling point could be determined.
- Executive summary:
Melting/Freezing Point and Boiling Point. Decomposed from approximately 220 °C (493 K),at 100.0 kPa, by differential scanning calorimetry and using a modified liquid bath method, designed to be compatible with Methods A.1 Melting/Freezing Temperature and A.2 Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Methods 102 and 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. As the test item decomposed, no values for melting/freezing point and boiling point could be determined.
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