Registration Dossier
Registration Dossier
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EC number: 255-288-2 | CAS number: 41272-40-6
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:
- November 3, 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Qualifier:
- according to guideline
- Guideline:
- other: OECD Guideline 103 (Boiling point)
- Principles of method if other than guideline:
- Analysis based on internal method SOP-STR 028.
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Remarks on result:
- other: no melting point between 25 and 450 °C
- Conclusions:
- Melting point: 140°C
- Executive summary:
Method
Differential scanning calorimetry analysis carried out between 25 and 450 °C, increasing temperature by 20 °C/min under N2.
Results
No melting point was seen.
DSC profile showed:
1. endothermic event between 140 and 152 °C (onset 140 °C, enthalpy -156 J/g)
2. exothermic event between 165 and 279 °C (onset 165 °C, enthalpy -190 J/g)
3. endothermic event between 306 and 354 °C (onset 320 °C, enthalpy -21 J/g)
Reference
DSC profile showed:
1. endothermic event between 32 and 152 °C (onset 32 °C, enthalpy -156 J/g)
2. exothermic event between 163 and 279 °C (onset 163 °C, enthalpy -190 J/g)
3. endothermic event between 306 and 354 °C (onset 320 °C, enthalpy -21 J/g)
Description of key information
140 °C;
Decomposition: 165 °C
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 140 °C
Additional information
R&C DSC showed a Malachite Green 4 Acetate melting point at 140°C and a reaction of decomposition at 165°C.
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