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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.

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2015
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
not applicable
GLP compliance:
no
Type of method:
thermal analysis
Melting / freezing pt.:
2.13 °C
Decomposition:
no
Remarks on result:
other: No pressure reported
Conclusions:
The melting point of 2,2-dimethylpropanoic anhydride was measured to be 2.13 °C and no pressure was reported.
Executive summary:

According to OECD Guidelines for Testing of Chemicals, Section 1 ¿ Physical-Chemical Properties No: 102 ¿Melting Point / Melting Range¿ and to Council Regulations EC No 440/2008, Guideline Part A ¿ Methods for the Determination of Physico-Chemical Properties, A.1. ¿Melting / Freezing Temperature¿ a melting point of 2.13 °C was determined. No pressure was reported. Between 70 and 200 °C an additional endothermic phases could be detected. The melting process was found to be reversible.

Description of key information

The melting point of the substance was measured to be 2.13 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
2.13 °C

Additional information

No pressure is reported.