Registration Dossier
Registration Dossier
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EC number: 219-976-6 | CAS number: 2589-57-3
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:
- December 2015
- 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
- GLP compliance:
- no
- Type of method:
- other: Method with capillary tube, device with metal block
- Key result
- Melting / freezing pt.:
- >= 26 - <= 28.8 °C
- Atm. press.:
- 101.3 kPa
- Remarks on result:
- other: The test substance melted to clear light yellowish liquid.
- Conclusions:
- The mean values of both determinations give the following melting range: 26.2 °C to 28.8 °C
Reference
The aluminium block was cooled down to 2 - 8 °C in a fridge, then the capillary tube containing the test substance was set into the block at 5.6 °C resp. 10.6 °C. The block was left with insulation wrappings at room temperature to warm up (slope = 0.2 K/min.) until melting started. The temperature was noted at which the first signs of melting of the test substance could be observed. When the substance was completely melted, the temperature was noted again. Two determinations of the melting temperature were performed.
Description of key information
The melting range of dimethyl-2,2'-azobis(isobutyrat) is 26.2 to 28.8 °C. It was determined according to EU A.1 ( method: capillary tube with metal block). For the assessment the lower end of the melting range is considered.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 26.2 °C
Additional information
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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