Registration Dossier
Registration Dossier
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EC number: 278-115-2 | CAS number: 75199-13-2
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:
- 22 March 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: OECD guideline 113
- Version / remarks:
- 1981
- GLP compliance:
- not specified
- Other quality assurance:
- other: SOP-LO-113 Thermal Stability by DSC
- Type of method:
- differential scanning calorimetry
- Melting / freezing pt.:
- 140 - 170 °C
- Decomposition:
- yes
- Decomp. temp.:
- 210 - 340 °C
- Conclusions:
- An endothermic effect occurs in the temperature range of 140–170 °C, interpreted as melting. An exothermal effect occurs in the temperature range of 210–340 °C with an average energy release of approximately -440 J/g.
- Executive summary:
The thermal stability of the test item was evaluated in an experimental study according to the OECD guideline 113 (1981). Two differential scanning calorimetry (DSC) runs were performed from 30 °C to 500 °C.
An endothermic effect occurs in the temperature range of 140–170 °C and was interpreted as melting. An exothermal effect occurs in the temperature range of 210–340 °C with an average energy release of approximately -440 J/g.
Reference
Results of two DSC runs.
| Sample weight (mg) | Start of effect (°C) | Energy (J/g) |
| 5.72 | 140 (endothermic) 210 (exothermic) |
+60 |
5.44 |
150 (endothermic) |
+70 |
- The DSC-measurements showed an endothermic effect in the temperature range of 140 – 170 °C.
- An exothermal effect occurred in the temperature range of 210 – 340 °C with an average energy release of approximately -440 J/g.
- The test item was black after the DSC-measurement.
Description of key information
Melting point: 140 °C - 170 °C
Decomposition: 210 °C - 340 °C; average energy release: ca. -440 J/g
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 140 °C
Additional information
A test run on a sample with high purity, i.e. > 90 % a.i., was used as key study. The melting point of test substance was found to be between 140 and 170 °C using two differential scanning calorimetry (DSC) runs, performed from 30 to 500 °C (OECD guideline 113, 1981).
Available data on a commercial preparation was reported for completeness sake. However, due to the low content of active substance as well as the high content of dispersing agents, test sample behaves differently, undergoing an exothermic decomposition above 200 °C without melting.
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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