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EC number: 248-666-3 | CAS number: 27813-02-1
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
- 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:
- EU Method A.1 (Melting / Freezing Temperature)
- Qualifier:
- according to guideline
- Guideline:
- other: EN ISO 11357-3 (Plastics-Differential scanning Calorimetry- Part 3 Determination of Temperature and enthalpy of melting and crystallization)
- GLP compliance:
- no
- Other quality assurance:
- other: EN ISO 9001
- Type of method:
- other: differential scanning calorimetry
- Specific details on test material used for the study:
- - Name of test material (as cited in study report): Hydroxypropyl methacrylate
- Physical state: liquid
- Analytical purity: 99.08%
- Lot/batch No.: 1035102305
- Storage condition of test material: between room temperature and 4 °C - Remarks on result:
- other: no melting point was detected
- Conclusions:
- No melting point was detected for hydroxypropyl methacrylate. The DSC-curve shows no melting peak in the heating cycle, but a relaxation peak and an endothermic Cp-step at – 90 °C, characteristic for a glass transition, i.e. the test item solidifies amorphously in the glassy state.
- Executive summary:
The melting point of hydroxypropyl methacrylate was determined acc. OECD 102 by DSC (differential scanning) method. No melting point was detected for hydroxypropyl methacrylate. The DSC-curve shows no melting peak in the heating cycle, but a relaxation peak and an endothermic Cp-step at – 90 °C, characteristic for a glass transition, i.e. the test item solidifies amorphously in the glassy state.
Reference
The DSC-curve shows no melting peak in the heating cycle, but a relaxation peak and an endothermic Cp-step at – 90 °C, characteristic for a glass transition, i.e. the test item solidifies amorphously in the glassy state.
Description of key information
No melting point was detected for hydroxypropyl methacrylate in a test acc. OECD 102 by differential scanning method. The DSC-curve shows no melting peak in the heating cycle, but a relaxation peak and an endothermic Cp-step at – 90 °C, characteristic for a glass transition, i.e. the test item solidifies amorphously in the glassy state.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -90 °C
Additional information
MP ca. - 90 °C
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