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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Qualifier:
according to guideline
Guideline:
other: standard laboratory method
Type of method:
other: not specified
Specific details on test material used for the study:
Origin not known, purity typically >= 98 %
Key result
Melting / freezing pt.:
>= 15.4 - <= 15.5 °C
Atm. press.:
ca. 1 013 hPa
Decomposition:
no
Conclusions:
The melting point of methacrylic acid is reported to be 15.4 - 15.5 °C at normal pressure.
Executive summary:

In a reliable handbook the melting point of methacrylic acid is reported to be 15.4 - 15.5 °C at normal pressure.

Description of key information

The melting point of methacrylic acid is reported in a reliable handbook with 15.4 - 15.5 °C at normal pressure (Beilstein, 1976)

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
15.5 °C

Additional information

Supporting information is available in additional handbooks which reported the melting point of methacrylic acid with 14 to 16 °C.