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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Referenceopen allclose all

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Peer reviewed database
Principles of method if other than guideline:
experimental result
Melting / freezing pt.:
25 °C
Atm. press.:
1 013
Remarks on result:
other: No further details available
Conclusions:
Melting point = 25 °C
Executive summary:

Melting point = 25 °C

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Peer-reviewed database
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Principles of method if other than guideline:
Experimental determination
GLP compliance:
no
Remarks:
not applicable
Type of method:
other: Experimental determination
Melting / freezing pt.:
25 °C
Atm. press.:
1 013.3 hPa
Conclusions:
A melting point of 25 °C is reported.
Executive summary:

A melting point of 25 °C is reported.

Description of key information

Melting point = 25 °C

This low melting point is the reason, why 2 -pyrrolidone is also sometimes referred to as a "low-melting solid".

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
25 °C

Additional information

A melting point of 25 °C was determined by Flick E.W. (2010) and reported in the peer-reviewed database GESTIS (2010).