Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 203-662-0 | CAS number: 109-29-5
- 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:
- key study
- Study period:
- 12 December 2015 - 23 May 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- 1998
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- 35 °C
- Atm. press.:
- >= 979 - <= 1 037 hPa
- Conclusions:
- The melting temperature of the substance was determined to be 35°C.
- Executive summary:
Differential Scanning Calorimetry (DSC) experiments were performed in a GLP study according to EC A.1, OECD 102 and OPPTS 830.7200.
The melting temperature of the substance was determined in duplicate obtaining a mean value of 35°C.
Reference
TGA EXPERIMENT (PRELIMINARY TEST)
From 125°C upwards the weight of the sample decreased significantly. At 197°C the sample weight had decreased by 25%. After the experiment it was observed that the test item was evaporated from the sample container.
DSC EXPERIMENT 1
An endothermic peak was observed between 0°C and 50°C. The effect was most likely obtained due to melting of the test item. Another endothermic effect was seen between 150°C and 250°C. The endothermic effect is most likely due to boiling of the test item. A third endothermic effect was observed between 250°C and 325°C. No onset temperatures could be calculated from this experiment. After the experiment, it was observed that the test item had evaporated from the sample container.
DSC EXPERIMENTS 2 AND 3
Experiment 2 was performed with a hermetically closed pan. In Experiment 3, a sample pan closed with a lid in which a small hole was drilled (prefabricated) was used. In both experiments, the test item was cooled to -90°C. In both Experiment 2 and Experiment 3, an endothermic peak was observed between 25°C and 75°C. The effect was most likely obtained due to melting of the test item. In Experiment 2, a second endothermic effect was seen between 250°C and 375°C. In Experiment 3, a second endothermic effect was seen between 100°C and 250°C. The difference is caused by the difference in pan used and shows that the effect is due to boiling. In Experiment 3, a third endothermic effect was observed between 275°C and 375°C. No onset temperatures could be calculated from these experiments. After the experiments, it was observed that the test item had evaporated from the sample containers.
DSC EXPERIMENTS 4 AND 5
In Experiment 4 and Experiment 5, the sample was melted prior to loading the sample pan in order to optimise the loading process and reduce the sample mass. The sampling procedure caused a shift of the first endothermic effect to a lower temperature and was therefore not taken into account for further calculation of melting temperature. The second endothermic effect was not affected by the sampling procedure. The extrapolated onset was 270.23°C in Experiment 4 and 267.46°C in Experiment 5. After the experiments, it was observed that the test item had evaporated from the sample containers.
DSC EXPERIMENT 7
A hermetically sealed sample container was used in Experiment 7. The extrapolated onset of the melting peak could not be accurately determined due to a small endothermic effect before the melting peak. The extrapolated onset of the boiling peak was 274.79°C. That no shift to higher temperature was observed as in Experiment 2 is most probably due to the fact that the sample pan had not been completely closed. After the experiment, it was observed that the test item had evaporated from the sample containers.
DSC EXPERIMENTS 8 AND 9
In Experiment 8 and Experiment 9, the temperature program was similar to the program of Experiment 7. The extrapolated onset of the melting peak was 34.95°C (Experiment 8) and 34.53°C (Experiment 9). The extrapolated onset of the boiling peak was 264.54°C in Experiment 8. The extrapolated onset of the boiling peak in Experiment 9 could not be determined accurately. This data was not used for boiling point determination. After the experiment it was observed that the test item had evaporated from the sample container.
The melting temperature was determined as the average obtained from Experiment 8 (34.95°C) and Experiment 9 (34.53°C).
Description of key information
The melting temperature of the substance was determined to be 35°C.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 35 °C
Additional information
Determined using Differential Scanning Calorimetry (DSC) experiments in a GLP study according to EC A.1, OECD 102 and OPPTS 830.7200.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.