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EC number: 277-551-0 | CAS number: 73609-36-6
- 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:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2015-07-25 to 2015-07-26
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- The study was conducted in accordance with a relevant test method and in compliance with a known quality system (ISO 9001:2008)
- 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:
- no
- Other quality assurance:
- other: ISO 9001:2008
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- 2.5 °C
- Atm. press.:
- 1 013 hPa
- Conclusions:
- A melting point value of 2.5°C at 1013 hPa was determined for the substance in accordance with a relevant test method and in compliance with a known quality system. The result is considered to be reliable.
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2015-07-20
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Remarks:
- The study was conducted in accordance with a relevant test method and in compliance with a known quality system (ISO 9001:2008)
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 3015
- Deviations:
- no
- GLP compliance:
- no
- Other quality assurance:
- other: ISO 9001:2008
- Type of method:
- other: Cloud point
- Key result
- Melting / freezing pt.:
- 2 °C
- Atm. press.:
- 1 013 hPa
- Conclusions:
- A melting point value of 2.0°C at 1013 hPa was determined for the substance in accordance with a relevant test method and in compliance with a known quality system. The result is considered to be reliable.
Referenceopen allclose all
The DSC diagrams (attached) show an exothermic peak during the cooling step with an onset temperature at –12.6°C (test1) and –14.0°C (test 2). During the heating step an endothermic peak was detected with an onset temperature at +2.9°C (test1) and +2.1°C (test 2).
Because there is no coincidence between the peaks of cooling and heating step an undercooled melt which begins to crystallize with delay is to be supposed during the cooling step.
The result obtained was thus confirmed using a cloud point study in accordance with ISO 3015 (See WoE Melting point/freezing point 4.2.746 Haas 2015).
Table 1: DSC result
Test |
Melting/Freezing temperature |
1 |
+2.1°C |
2 |
+2.9°C |
Mean value |
+2.5°C, 275.7K |
Approximate accuracy of the instrument: ± 0.5 K (up to 600K)
Table 1: Cloud point result
Time [min] |
Sample Temperature [°C] |
Observations |
0 (start) |
26 |
clear liquid |
5 |
20 |
clear liquid |
10 |
15 |
clear liquid |
15 |
10 |
clear liquid |
20 |
5 |
clear liquid |
23 |
2 |
crystallization on the bottom |
25 |
1 |
crystallization on the bottom |
30 |
3 |
crystallization on the bottom and wall |
40 |
3 |
nearly complete crystallization |
55 |
2 |
complete crystallization |
Result |
+2°C, 275.2 K |
Description of key information
Melting point: 2-2.5°C at 1013 hPa
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 2 °C
Additional information
Two reliable measured melting point studies from the same author (Haas 2015) are available for the registered substance. A melting point value of 2.5°C at 1013 hPa was determined for the substance using a Differential Scanning Calorimetry (DSC) in accordance with EU Test Method A.1. Also, a melting point of 2°C at 1013 hPa was determined for the substance using a cloud point in accordance with the ISO 3015 test method. Both studies were conducted in compliance with a known quality system (ISO 9001:2008) and are considered to be reliable. The results are thus used as weight of evidence.
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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