Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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: 233-937-0 | CAS number: 10450-60-9
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:
- supporting study
- Study period:
- not stated
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- Handbook data does not specify the method. Data from peer reviewed source.
- GLP compliance:
- not specified
- Type of method:
- other: Handbook data does not specify the method. Data from peer reviewed source.
- Key result
- Melting / freezing pt.:
- 122 °C
- Remarks on result:
- other: no information on atm. pressure reported
- Conclusions:
- According to the handbook data the melting point of the substance is 122 °C.
- Executive summary:
According to the handbook data the melting point of the substance is 122 °C.
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- not stated
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- Handbook data does not specify the method. Data from peer reviewed source.
- GLP compliance:
- not specified
- Type of method:
- other: Handbook data does not specify the method. Data from peer reviewed source.
- Key result
- Melting / freezing pt.:
- 122 °C
- Remarks on result:
- other: no information on atm. pressure reported
- Conclusions:
- According to the handbook data the melting point of the substance is 122 °C.
- Executive summary:
According to the handbook data the melting point of the substance is 122 °C.
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 23 April 2012 - 29 June 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- other: read-across target
- 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
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- ca. 270 °C
- Conclusions:
- The test material has been determined to decompose from approximately 270 °C (543 K). Due to this decomposition, no value for melting temperature could be determined.
- Executive summary:
The melting point of the test material was evaluated by differential scanning calorimetry (DSC) using a procedure designed to be compatible with OECD Guideline 102 and EU Method A.1 under GLP conditions.
The test material has been determined to decompose from approximately 270 °C (543 K). Due to this decomposition, no value for melting temperature could be obtained.
- Endpoint:
- melting point/freezing point
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- supporting study
- Justification for type of information:
- Read-across to structurally similar substance sodium periodate (CAS 7790-28-5). Sodium periodate is the sodium salt of periodic acid.
- Reason / purpose for cross-reference:
- read-across source
- Decomposition:
- yes
- Decomp. temp.:
- ca. 270 °C
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 16 March 2018 to 11 December 2018
- 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:
- 2016
- 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
- Melting / freezing pt.:
- 127.7 °C
- Conclusions:
- Under the conditions of the test the melting temperature of the test material was 127.7 °C (400.8 K).
- Executive summary:
The melting temperature of the test material was assessed according to EC Guideline A.1., OECD Guideline 102 and EPA Guideline OPPTS 830.7200 in accordance with the principles of GLP using differential scanning calorimetry.
Under the conditions of the study the melting temperature of the test material was 127.7 °C (400.8 K). Reaction and/or decomposition of the test material was observed during and after melting.
Referenceopen allclose all
As a low rate of enthalpy change was seen during the initial stages of decomposition, the onset temperature can only be approximated.
Although the test material was determined to decompose before melting, the sample was heated to 400 °C and remained as a white solid.
Preliminary Test
Starting at 150 °C, the weight of the sample decreased significantly. At 216 °C, the sample weight had decreased by 25 %.
After the experiment, pink/red residue was observed on the lid of the sample container and a pink/red molten residue remained in the sample container (original colour: white). The change of the colour indicated reaction and/or decomposition of the test material.
Main Study
An endothermic peak was observed directly followed by an exothermic effect between 100 °C and 200 °C. The extrapolated onset temperature of the endothermic peak was 127.623 °C. Based on the shape of the endothermic effect and the weight loss observed during the preliminary test, the endothermic effect was most probably due to a combination of melting and reaction and/or decomposition of the test material.The exothermic effect was probably obtained due to reaction and/or decomposition of the test material. After the experiment, white residue was observed on the lid of the sample container and a white molten residue remained in the sample container.
In order to investigate theendothermicpeak, Experiment 2 was stopped directly after the melting peak. After the experiment, a white molten residue remained in the sample container. It demonstrated that melting was the reason for the endothermic effect.
Experiment 3 was performed to determine the duplicate melting temperature. The extrapolated onset of the melting peak was 127.698 °C. Based on the shape of the endothermic effect and the weight loss observed during the preliminary test, the effect was most probably due to a combination of melting and reaction and/or decomposition of the test material. After the experiment, a white molten residue remained in the sample container.
The melting temperature was determined as the mean melting temperature of Experiment 1 (127.623 °C) and Experiment 3 (127.698 °C).
Description of key information
Under the conditions of the test the melting temperature of the test material was 127.7 °C (400.8 K).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 127 °C
Additional information
Key Study: Lammers (2019)
The melting temperature of the test material was assessed according to EC Guideline A.1., OECD Guideline 102 and EPA Guideline OPPTS 830.7200 in accordance with the principles of GLP using differential scanning calorimetry. The study was assigned a reliability score of 1 in accordance with the principles for assessing data quality as outlined by Klimisch et al. (1997).
Under the conditions of the study the melting temperature of the test material was 127.7 °C (400.8 K). Reaction and/or decomposition of the test material was observed during and after melting.
Supporting Study
The melting point of the read across material, sodium periodate, was evaluated by differential scanning calorimetry (DSC) using a procedure designed to be compatible with OECD Guideline 102 and EU Method A.1.
The study was assigned a reliability score of 1 in accordance with the principles for assessing data quality as outlined by Klimisch et al (1997), however, since the data is available on a read across substance an overall reliability score of 2 is considered appropriate. Sodium periodate is considered to be a suitable substance for read across since it is the sodium salt of periodic acid.
The test material has been determined to decompose from approximately 270 °C (543 K). Due to this decomposition, no value for melting temperature could be obtained.
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.
